diff --git a/searx/engines/currency_convert.py b/searx/engines/currency_convert.py
index d8841c1d..4618c82b 100644
--- a/searx/engines/currency_convert.py
+++ b/searx/engines/currency_convert.py
@@ -13,12 +13,9 @@ def request(query, params):
     if not m:
         # wrong query
         return params
-    try:
-        ammount, from_currency, to_currency = m.groups()
-        ammount = float(ammount)
-    except:
-        # wrong params
-        return params
+
+    ammount, from_currency, to_currency = m.groups()
+    ammount = float(ammount)
 
     q = (from_currency + to_currency).upper()
 
diff --git a/searx/engines/duckduckgo.py b/searx/engines/duckduckgo.py
index 583e33f7..e35a6334 100644
--- a/searx/engines/duckduckgo.py
+++ b/searx/engines/duckduckgo.py
@@ -15,7 +15,7 @@
 
 from urllib import urlencode
 from lxml.html import fromstring
-from searx.utils import html_to_text
+from searx.engines.xpath import extract_text
 
 # engine dependent config
 categories = ['general']
@@ -28,8 +28,8 @@ url = 'https://duckduckgo.com/html?{query}&s={offset}'
 # specific xpath variables
 result_xpath = '//div[@class="results_links results_links_deep web-result"]'  # noqa
 url_xpath = './/a[@class="large"]/@href'
-title_xpath = './/a[@class="large"]//text()'
-content_xpath = './/div[@class="snippet"]//text()'
+title_xpath = './/a[@class="large"]'
+content_xpath = './/div[@class="snippet"]'
 
 
 # do search-request
@@ -64,8 +64,8 @@ def response(resp):
         if not res_url:
             continue
 
-        title = html_to_text(''.join(r.xpath(title_xpath)))
-        content = html_to_text(''.join(r.xpath(content_xpath)))
+        title = extract_text(r.xpath(title_xpath))
+        content = extract_text(r.xpath(content_xpath))
 
         # append result
         results.append({'title': title,
diff --git a/searx/engines/duckduckgo_definitions.py b/searx/engines/duckduckgo_definitions.py
index b66d6c0f..793e97d2 100644
--- a/searx/engines/duckduckgo_definitions.py
+++ b/searx/engines/duckduckgo_definitions.py
@@ -25,9 +25,10 @@ def request(query, params):
 
 
 def response(resp):
-    search_res = json.loads(resp.text)
     results = []
 
+    search_res = json.loads(resp.text)
+
     content = ''
     heading = search_res.get('Heading', '')
     attributes = []
@@ -68,7 +69,7 @@ def response(resp):
             results.append({'title': heading, 'url': firstURL})
 
     # related topics
-    for ddg_result in search_res.get('RelatedTopics', None):
+    for ddg_result in search_res.get('RelatedTopics', []):
         if 'FirstURL' in ddg_result:
             suggestion = result_to_text(ddg_result.get('FirstURL', None),
                                         ddg_result.get('Text', None),
diff --git a/searx/engines/faroo.py b/searx/engines/faroo.py
index 5360ea15..4a5e60a6 100644
--- a/searx/engines/faroo.py
+++ b/searx/engines/faroo.py
@@ -37,7 +37,7 @@ search_category = {'general': 'web',
 
 # do search-request
 def request(query, params):
-    offset = (params['pageno']-1) * number_of_results + 1
+    offset = (params['pageno'] - 1) * number_of_results + 1
     categorie = search_category.get(params['category'], 'web')
 
     if params['language'] == 'all':
@@ -45,11 +45,11 @@ def request(query, params):
     else:
         language = params['language'].split('_')[0]
 
-    # skip, if language is not supported
+    # if language is not supported, put it in english
     if language != 'en' and\
        language != 'de' and\
        language != 'zh':
-        return params
+        language = 'en'
 
     params['url'] = search_url.format(offset=offset,
                                       number_of_results=number_of_results,
@@ -69,12 +69,10 @@ def response(resp):
     # HTTP-Code 401: api-key is not valide
     if resp.status_code == 401:
         raise Exception("API key is not valide")
-        return []
 
     # HTTP-Code 429: rate limit exceeded
     if resp.status_code == 429:
         raise Exception("rate limit has been exceeded!")
-        return []
 
     results = []
 
diff --git a/searx/engines/openstreetmap.py b/searx/engines/openstreetmap.py
index 68446ef5..60c3c13c 100644
--- a/searx/engines/openstreetmap.py
+++ b/searx/engines/openstreetmap.py
@@ -38,6 +38,9 @@ def response(resp):
 
     # parse results
     for r in json:
+        if 'display_name' not in r:
+            continue
+
         title = r['display_name']
         osm_type = r.get('osm_type', r.get('type'))
         url = result_base_url.format(osm_type=osm_type,
@@ -49,10 +52,8 @@ def response(resp):
         geojson = r.get('geojson')
 
         # if no geojson is found and osm_type is a node, add geojson Point
-        if not geojson and\
-           osm_type == 'node':
-            geojson = {u'type': u'Point',
-                       u'coordinates': [r['lon'], r['lat']]}
+        if not geojson and osm_type == 'node':
+            geojson = {u'type': u'Point', u'coordinates': [r['lon'], r['lat']]}
 
         address_raw = r.get('address')
         address = {}
diff --git a/searx/engines/photon.py b/searx/engines/photon.py
index 16340d24..a9c558c4 100644
--- a/searx/engines/photon.py
+++ b/searx/engines/photon.py
@@ -61,7 +61,7 @@ def response(resp):
             continue
 
         # get title
-        title = properties['name']
+        title = properties.get('name')
 
         # get osm-type
         if properties.get('osm_type') == 'N':
diff --git a/searx/engines/startpage.py b/searx/engines/startpage.py
index d60ecd97..9d5b4bef 100644
--- a/searx/engines/startpage.py
+++ b/searx/engines/startpage.py
@@ -13,6 +13,7 @@
 from lxml import html
 from cgi import escape
 import re
+from searx.engines.xpath import extract_text
 
 # engine dependent config
 categories = ['general']
@@ -45,8 +46,7 @@ def request(query, params):
 
     # set language if specified
     if params['language'] != 'all':
-        params['data']['with_language'] = ('lang_' +
-                                           params['language'].split('_')[0])
+        params['data']['with_language'] = ('lang_' + params['language'].split('_')[0])
 
     return params
 
@@ -64,18 +64,15 @@ def response(resp):
             continue
         link = links[0]
         url = link.attrib.get('href')
-        try:
-            title = escape(link.text_content())
-        except UnicodeDecodeError:
-            continue
 
         # block google-ad url's
         if re.match("^http(s|)://www.google.[a-z]+/aclk.*$", url):
             continue
 
+        title = escape(extract_text(link))
+
         if result.xpath('./p[@class="desc"]'):
-            content = escape(result.xpath('./p[@class="desc"]')[0]
-                             .text_content())
+            content = escape(extract_text(result.xpath('./p[@class="desc"]')))
         else:
             content = ''
 
diff --git a/searx/engines/subtitleseeker.py b/searx/engines/subtitleseeker.py
index 9aaf1947..acefe30e 100644
--- a/searx/engines/subtitleseeker.py
+++ b/searx/engines/subtitleseeker.py
@@ -12,6 +12,7 @@ from cgi import escape
 from urllib import quote_plus
 from lxml import html
 from searx.languages import language_codes
+from searx.engines.xpath import extract_text
 
 # engine dependent config
 categories = ['videos']
@@ -20,7 +21,7 @@ language = ""
 
 # search-url
 url = 'http://www.subtitleseeker.com/'
-search_url = url+'search/TITLES/{query}&p={pageno}'
+search_url = url + 'search/TITLES/{query}&p={pageno}'
 
 # specific xpath variables
 results_xpath = '//div[@class="boxRows"]'
@@ -44,7 +45,7 @@ def response(resp):
     if resp.search_params['language'] != 'all':
         search_lang = [lc[1]
                        for lc in language_codes
-                       if lc[0][:2] == resp.search_params['language']][0]
+                       if lc[0][:2] == resp.search_params['language'].split('_')[0]][0]
 
     # parse results
     for result in dom.xpath(results_xpath):
@@ -56,17 +57,17 @@ def response(resp):
         elif search_lang:
             href = href + search_lang + '/'
 
-        title = escape(link.xpath(".//text()")[0])
+        title = escape(extract_text(link))
 
-        content = result.xpath('.//div[contains(@class,"red")]//text()')[0]
+        content = extract_text(result.xpath('.//div[contains(@class,"red")]'))
         content = content + " - "
-        text = result.xpath('.//div[contains(@class,"grey-web")]')[0]
-        content = content + html.tostring(text, method='text')
+        text = extract_text(result.xpath('.//div[contains(@class,"grey-web")]')[0])
+        content = content + text
 
         if result.xpath(".//span") != []:
             content = content +\
                 " - (" +\
-                result.xpath(".//span//text()")[0].strip() +\
+                extract_text(result.xpath(".//span")) +\
                 ")"
 
         # append result
diff --git a/searx/engines/twitter.py b/searx/engines/twitter.py
index bd9a8c2f..0e35e618 100644
--- a/searx/engines/twitter.py
+++ b/searx/engines/twitter.py
@@ -13,8 +13,8 @@
 from urlparse import urljoin
 from urllib import urlencode
 from lxml import html
-from cgi import escape
 from datetime import datetime
+from searx.engines.xpath import extract_text
 
 # engine dependent config
 categories = ['social media']
@@ -22,12 +22,12 @@ language_support = True
 
 # search-url
 base_url = 'https://twitter.com/'
-search_url = base_url+'search?'
+search_url = base_url + 'search?'
 
 # specific xpath variables
 results_xpath = '//li[@data-item-type="tweet"]'
 link_xpath = './/small[@class="time"]//a'
-title_xpath = './/span[@class="username js-action-profile-name"]//text()'
+title_xpath = './/span[@class="username js-action-profile-name"]'
 content_xpath = './/p[@class="js-tweet-text tweet-text"]'
 timestamp_xpath = './/span[contains(@class,"_timestamp")]'
 
@@ -39,6 +39,8 @@ def request(query, params):
     # set language if specified
     if params['language'] != 'all':
         params['cookies']['lang'] = params['language'].split('_')[0]
+    else:
+        params['cookies']['lang'] = 'en'
 
     return params
 
@@ -53,8 +55,9 @@ def response(resp):
     for tweet in dom.xpath(results_xpath):
         link = tweet.xpath(link_xpath)[0]
         url = urljoin(base_url, link.attrib.get('href'))
-        title = ''.join(tweet.xpath(title_xpath))
-        content = escape(html.tostring(tweet.xpath(content_xpath)[0], method='text', encoding='UTF-8').decode("utf-8"))
+        title = extract_text(tweet.xpath(title_xpath))
+        content = extract_text(tweet.xpath(content_xpath)[0])
+
         pubdate = tweet.xpath(timestamp_xpath)
         if len(pubdate) > 0:
             timestamp = float(pubdate[0].attrib.get('data-time'))
diff --git a/searx/engines/yacy.py b/searx/engines/yacy.py
index 17e2a7aa..3d26c9cc 100644
--- a/searx/engines/yacy.py
+++ b/searx/engines/yacy.py
@@ -25,10 +25,10 @@ number_of_results = 5
 # search-url
 base_url = 'http://localhost:8090'
 search_url = '/yacysearch.json?{query}'\
-                             '&startRecord={offset}'\
-                             '&maximumRecords={limit}'\
-                             '&contentdom={search_type}'\
-                             '&resource=global'             # noqa
+             '&startRecord={offset}'\
+             '&maximumRecords={limit}'\
+             '&contentdom={search_type}'\
+             '&resource=global'
 
 # yacy specific type-definitions
 search_types = {'general': 'text',
@@ -41,7 +41,7 @@ search_types = {'general': 'text',
 # do search-request
 def request(query, params):
     offset = (params['pageno'] - 1) * number_of_results
-    search_type = search_types.get(params['category'], '0')
+    search_type = search_types.get(params.get('category'), '0')
 
     params['url'] = base_url +\
         search_url.format(query=urlencode({'query': query}),
@@ -66,9 +66,12 @@ def response(resp):
     if not raw_search_results:
         return []
 
-    search_results = raw_search_results.get('channels', {})[0].get('items', [])
+    search_results = raw_search_results.get('channels', [])
 
-    for result in search_results:
+    if len(search_results) == 0:
+        return []
+
+    for result in search_results[0].get('items', []):
         # parse image results
         if result.get('image'):
             # append result
@@ -88,7 +91,7 @@ def response(resp):
                             'content': result['description'],
                             'publishedDate': publishedDate})
 
-        #TODO parse video, audio and file results
+        # TODO parse video, audio and file results
 
     # return results
     return results
diff --git a/searx/engines/yahoo.py b/searx/engines/yahoo.py
index c6c5b0d0..161f7513 100644
--- a/searx/engines/yahoo.py
+++ b/searx/engines/yahoo.py
@@ -35,7 +35,7 @@ suggestion_xpath = '//div[@id="satat"]//a'
 def parse_url(url_string):
     endings = ['/RS', '/RK']
     endpositions = []
-    start = url_string.find('http', url_string.find('/RU=')+1)
+    start = url_string.find('http', url_string.find('/RU=') + 1)
 
     for ending in endings:
         endpos = url_string.rfind(ending)
@@ -91,7 +91,7 @@ def response(resp):
                         'content': content})
 
     # if no suggestion found, return results
-    if not suggestion_xpath:
+    if not dom.xpath(suggestion_xpath):
         return results
 
     # parse suggestion
diff --git a/searx/tests/engines/test_currency_convert.py b/searx/tests/engines/test_currency_convert.py
new file mode 100644
index 00000000..271ed03a
--- /dev/null
+++ b/searx/tests/engines/test_currency_convert.py
@@ -0,0 +1,44 @@
+from collections import defaultdict
+from datetime import datetime
+import mock
+from searx.engines import currency_convert
+from searx.testing import SearxTestCase
+
+
+class TestCurrencyConvertEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        params = currency_convert.request(query, dicto)
+        self.assertNotIn('url', params)
+
+        query = '1.1.1 EUR in USD'
+        params = currency_convert.request(query, dicto)
+        self.assertNotIn('url', params)
+
+        query = '10 eur in usd'
+        params = currency_convert.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn('finance.yahoo.com', params['url'])
+        self.assertIn('EUR', params['url'])
+        self.assertIn('USD', params['url'])
+
+    def test_response(self):
+        dicto = defaultdict(dict)
+        dicto['ammount'] = 10
+        dicto['from'] = "EUR"
+        dicto['to'] = "USD"
+        response = mock.Mock(text='a,b,c,d', search_params=dicto)
+        self.assertEqual(currency_convert.response(response), [])
+
+        csv = "2,0.5,1"
+        response = mock.Mock(text=csv, search_params=dicto)
+        results = currency_convert.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['answer'], '10 EUR = 5.0 USD (1 EUR = 0.5 USD)')
+        now_date = datetime.now().strftime('%Y%m%d')
+        self.assertEqual(results[0]['url'], 'http://finance.yahoo.com/currency/converter-results/' +
+                                            now_date + '/10-eur-to-usd.html')
diff --git a/searx/tests/engines/test_duckduckgo.py b/searx/tests/engines/test_duckduckgo.py
new file mode 100644
index 00000000..6f085cbc
--- /dev/null
+++ b/searx/tests/engines/test_duckduckgo.py
@@ -0,0 +1,90 @@
+from collections import defaultdict
+import mock
+from searx.engines import duckduckgo
+from searx.testing import SearxTestCase
+
+
+class TestDuckduckgoEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = duckduckgo.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('duckduckgo.com', params['url'])
+        self.assertIn('fr-fr', params['url'])
+
+        dicto['language'] = 'all'
+        params = duckduckgo.request(query, dicto)
+        self.assertIn('en-us', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, duckduckgo.response, None)
+        self.assertRaises(AttributeError, duckduckgo.response, [])
+        self.assertRaises(AttributeError, duckduckgo.response, '')
+        self.assertRaises(AttributeError, duckduckgo.response, '[]')
+
+        response = mock.Mock(text='<html></html>')
+        self.assertEqual(duckduckgo.response(response), [])
+
+        html = """
+        <div class="results_links results_links_deep web-result">
+            <div class="icon_fav" style="display: block;">
+                <a rel="nofollow" href="https://www.test.com/">
+                    <img width="16" height="16" alt=""
+                    src="/i/www.test.com.ico" style="visibility: visible;" name="i15" />
+                </a>
+            </div>
+            <div class="links_main links_deep"> <!-- This is the visible part -->
+                <a rel="nofollow" class="large" href="http://this.should.be.the.link/">
+                    This <b>is</b> <b>the</b> title
+                </a>
+                <div class="snippet"><b>This</b> should be the content.</div>
+                <div class="url">
+                    http://this.should.be.the.link/
+                </div>
+            </div>
+        </div>
+        """
+        response = mock.Mock(text=html)
+        results = duckduckgo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'http://this.should.be.the.link/')
+        self.assertEqual(results[0]['content'], 'This should be the content.')
+
+        html = """
+        <div class="results_links results_links_deep web-result">
+            <div class="icon_fav" style="display: block;">
+            </div>
+            <div class="links_main links_deep"> <!-- This is the visible part -->
+                <div class="snippet"><b>This</b> should be the content.</div>
+                <div class="url">
+                    http://this.should.be.the.link/
+                </div>
+            </div>
+        </div>
+        <div class="results_links results_links_deep web-result">
+            <div class="icon_fav" style="display: block;">
+                <img width="16" height="16" alt=""
+                src="/i/www.test.com.ico" style="visibility: visible;" name="i15" />
+            </div>
+            <div class="links_main links_deep"> <!-- This is the visible part -->
+                <a rel="nofollow" class="large" href="">
+                    This <b>is</b> <b>the</b> title
+                </a>
+                <div class="snippet"><b>This</b> should be the content.</div>
+                <div class="url">
+                    http://this.should.be.the.link/
+                </div>
+            </div>
+        </div>
+        """
+        response = mock.Mock(text=html)
+        results = duckduckgo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/engines/test_duckduckgo_definitions.py b/searx/tests/engines/test_duckduckgo_definitions.py
new file mode 100644
index 00000000..71c84235
--- /dev/null
+++ b/searx/tests/engines/test_duckduckgo_definitions.py
@@ -0,0 +1,250 @@
+from collections import defaultdict
+import mock
+from searx.engines import duckduckgo_definitions
+from searx.testing import SearxTestCase
+
+
+class TestDDGDefinitionsEngine(SearxTestCase):
+
+    def test_result_to_text(self):
+        url = ''
+        text = 'Text'
+        html_result = 'Html'
+        result = duckduckgo_definitions.result_to_text(url, text, html_result)
+        self.assertEqual(result, text)
+
+        html_result = '<a href="url">Text in link</a>'
+        result = duckduckgo_definitions.result_to_text(url, text, html_result)
+        self.assertEqual(result, 'Text in link')
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        params = duckduckgo_definitions.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('duckduckgo.com', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, duckduckgo_definitions.response, None)
+        self.assertRaises(AttributeError, duckduckgo_definitions.response, [])
+        self.assertRaises(AttributeError, duckduckgo_definitions.response, '')
+        self.assertRaises(AttributeError, duckduckgo_definitions.response, '[]')
+
+        response = mock.Mock(text='{}')
+        self.assertEqual(duckduckgo_definitions.response(response), [])
+
+        response = mock.Mock(text='{"data": []}')
+        self.assertEqual(duckduckgo_definitions.response(response), [])
+
+        json = """
+        {
+          "DefinitionSource": "definition source",
+          "Heading": "heading",
+          "ImageWidth": 0,
+          "RelatedTopics": [
+            {
+              "Result": "Top-level domains",
+              "Icon": {
+                "URL": "",
+                "Height": "",
+                "Width": ""
+              },
+              "FirstURL": "https://first.url",
+              "Text": "text"
+            },
+            {
+              "Topics": [
+                {
+                  "Result": "result topic",
+                  "Icon": {
+                    "URL": "",
+                    "Height": "",
+                    "Width": ""
+                  },
+                  "FirstURL": "https://duckduckgo.com/?q=2%2F2",
+                  "Text": "result topic text"
+                }
+              ],
+              "Name": "name"
+            }
+          ],
+          "Entity": "Entity",
+          "Type": "A",
+          "Redirect": "",
+          "DefinitionURL": "http://definition.url",
+          "AbstractURL": "https://abstract.url",
+          "Definition": "this is the definition",
+          "AbstractSource": "abstract source",
+          "Infobox": {
+            "content": [
+              {
+                "data_type": "string",
+                "value": "1999",
+                "label": "Introduced",
+                "wiki_order": 0
+              }
+            ],
+            "meta": [
+              {
+                "data_type": "string",
+                "value": ".test",
+                "label": "article_title"
+              }
+            ]
+          },
+          "Image": "image.png",
+          "ImageIsLogo": 0,
+          "Abstract": "abstract",
+          "AbstractText": "abstract text",
+          "AnswerType": "",
+          "ImageHeight": 0,
+          "Results": [{
+                 "Result" : "result title",
+                 "Icon" : {
+                    "URL" : "result url",
+                    "Height" : 16,
+                    "Width" : 16
+                 },
+                 "FirstURL" : "result first url",
+                 "Text" : "result text"
+              }
+          ],
+          "Answer": "answer"
+        }
+        """
+        response = mock.Mock(text=json)
+        results = duckduckgo_definitions.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 4)
+        self.assertEqual(results[0]['answer'], 'answer')
+        self.assertEqual(results[1]['title'], 'heading')
+        self.assertEqual(results[1]['url'], 'result first url')
+        self.assertEqual(results[2]['suggestion'], 'text')
+        self.assertEqual(results[3]['infobox'], 'heading')
+        self.assertEqual(results[3]['id'], 'http://definition.url')
+        self.assertEqual(results[3]['entity'], 'Entity')
+        self.assertIn('abstract', results[3]['content'])
+        self.assertIn('this is the definition', results[3]['content'])
+        self.assertEqual(results[3]['img_src'], 'image.png')
+        self.assertIn('Introduced', results[3]['attributes'][0]['label'])
+        self.assertIn('1999', results[3]['attributes'][0]['value'])
+        self.assertIn({'url': 'https://abstract.url', 'title': 'abstract source'}, results[3]['urls'])
+        self.assertIn({'url': 'http://definition.url', 'title': 'definition source'}, results[3]['urls'])
+        self.assertIn({'name': 'name', 'suggestions': ['result topic text']}, results[3]['relatedTopics'])
+
+        json = """
+        {
+          "DefinitionSource": "definition source",
+          "Heading": "heading",
+          "ImageWidth": 0,
+          "RelatedTopics": [],
+          "Entity": "Entity",
+          "Type": "A",
+          "Redirect": "",
+          "DefinitionURL": "",
+          "AbstractURL": "https://abstract.url",
+          "Definition": "",
+          "AbstractSource": "abstract source",
+          "Image": "",
+          "ImageIsLogo": 0,
+          "Abstract": "",
+          "AbstractText": "abstract text",
+          "AnswerType": "",
+          "ImageHeight": 0,
+          "Results": [],
+          "Answer": ""
+        }
+        """
+        response = mock.Mock(text=json)
+        results = duckduckgo_definitions.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['url'], 'https://abstract.url')
+        self.assertEqual(results[0]['title'], 'heading')
+        self.assertEqual(results[0]['content'], '')
+
+        json = """
+        {
+          "DefinitionSource": "definition source",
+          "Heading": "heading",
+          "ImageWidth": 0,
+          "RelatedTopics": [
+            {
+              "Result": "Top-level domains",
+              "Icon": {
+                "URL": "",
+                "Height": "",
+                "Width": ""
+              },
+              "FirstURL": "https://first.url",
+              "Text": "heading"
+            },
+            {
+              "Name": "name"
+            },
+            {
+              "Topics": [
+                {
+                  "Result": "result topic",
+                  "Icon": {
+                    "URL": "",
+                    "Height": "",
+                    "Width": ""
+                  },
+                  "FirstURL": "https://duckduckgo.com/?q=2%2F2",
+                  "Text": "heading"
+                }
+              ],
+              "Name": "name"
+            }
+          ],
+          "Entity": "Entity",
+          "Type": "A",
+          "Redirect": "",
+          "DefinitionURL": "http://definition.url",
+          "AbstractURL": "https://abstract.url",
+          "Definition": "this is the definition",
+          "AbstractSource": "abstract source",
+          "Infobox": {
+            "meta": [
+              {
+                "data_type": "string",
+                "value": ".test",
+                "label": "article_title"
+              }
+            ]
+          },
+          "Image": "image.png",
+          "ImageIsLogo": 0,
+          "Abstract": "abstract",
+          "AbstractText": "abstract text",
+          "AnswerType": "",
+          "ImageHeight": 0,
+          "Results": [{
+                 "Result" : "result title",
+                 "Icon" : {
+                    "URL" : "result url",
+                    "Height" : 16,
+                    "Width" : 16
+                 },
+                 "Text" : "result text"
+              }
+          ],
+          "Answer": ""
+        }
+        """
+        response = mock.Mock(text=json)
+        results = duckduckgo_definitions.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['infobox'], 'heading')
+        self.assertEqual(results[0]['id'], 'http://definition.url')
+        self.assertEqual(results[0]['entity'], 'Entity')
+        self.assertIn('abstract', results[0]['content'])
+        self.assertIn('this is the definition', results[0]['content'])
+        self.assertEqual(results[0]['img_src'], 'image.png')
+        self.assertIn({'url': 'https://abstract.url', 'title': 'abstract source'}, results[0]['urls'])
+        self.assertIn({'url': 'http://definition.url', 'title': 'definition source'}, results[0]['urls'])
+        self.assertIn({'name': 'name', 'suggestions': []}, results[0]['relatedTopics'])
diff --git a/searx/tests/engines/test_faroo.py b/searx/tests/engines/test_faroo.py
new file mode 100644
index 00000000..acebdda8
--- /dev/null
+++ b/searx/tests/engines/test_faroo.py
@@ -0,0 +1,116 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import faroo
+from searx.testing import SearxTestCase
+
+
+class TestFarooEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        dicto['category'] = 'general'
+        params = faroo.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('faroo.com', params['url'])
+        self.assertIn('en', params['url'])
+        self.assertIn('web', params['url'])
+
+        dicto['language'] = 'all'
+        params = faroo.request(query, dicto)
+        self.assertIn('en', params['url'])
+
+        dicto['language'] = 'de_DE'
+        params = faroo.request(query, dicto)
+        self.assertIn('de', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, faroo.response, None)
+        self.assertRaises(AttributeError, faroo.response, [])
+        self.assertRaises(AttributeError, faroo.response, '')
+        self.assertRaises(AttributeError, faroo.response, '[]')
+
+        response = mock.Mock(text='{}')
+        self.assertEqual(faroo.response(response), [])
+
+        response = mock.Mock(text='{"data": []}')
+        self.assertEqual(faroo.response(response), [])
+
+        response = mock.Mock(text='{"data": []}', status_code=401)
+        self.assertRaises(Exception, faroo.response, response)
+
+        response = mock.Mock(text='{"data": []}', status_code=429)
+        self.assertRaises(Exception, faroo.response, response)
+
+        json = """
+        {
+          "results": [
+            {
+              "title": "This is the title",
+              "kwic": "This is the content",
+              "content": "",
+              "url": "http://this.is.the.url/",
+              "iurl": "",
+              "domain": "css3test.com",
+              "author": "Jim Dalrymple",
+              "news": true,
+              "votes": "10",
+              "date": 1360622563000,
+              "related": []
+            },
+            {
+              "title": "This is the title2",
+              "kwic": "This is the content2",
+              "content": "",
+              "url": "http://this.is.the.url2/",
+              "iurl": "",
+              "domain": "css3test.com",
+              "author": "Jim Dalrymple",
+              "news": false,
+              "votes": "10",
+              "related": []
+            },
+            {
+              "title": "This is the title3",
+              "kwic": "This is the content3",
+              "content": "",
+              "url": "http://this.is.the.url3/",
+              "iurl": "http://upload.wikimedia.org/optimized.jpg",
+              "domain": "css3test.com",
+              "author": "Jim Dalrymple",
+              "news": false,
+              "votes": "10",
+              "related": []
+            }
+          ],
+          "query": "test",
+          "suggestions": [],
+          "count": 100,
+          "start": 1,
+          "length": 10,
+          "time": "15"
+        }
+        """
+        response = mock.Mock(text=json)
+        results = faroo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 4)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/')
+        self.assertEqual(results[0]['content'], 'This is the content')
+        self.assertEqual(results[1]['title'], 'This is the title2')
+        self.assertEqual(results[1]['url'], 'http://this.is.the.url2/')
+        self.assertEqual(results[1]['content'], 'This is the content2')
+        self.assertEqual(results[3]['img_src'], 'http://upload.wikimedia.org/optimized.jpg')
+
+        json = """
+        {}
+        """
+        response = mock.Mock(text=json)
+        results = faroo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/engines/test_google.py b/searx/tests/engines/test_google.py
new file mode 100644
index 00000000..2c3d8e5f
--- /dev/null
+++ b/searx/tests/engines/test_google.py
@@ -0,0 +1,162 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+import lxml
+from searx.engines import google
+from searx.testing import SearxTestCase
+
+
+class TestGoogleEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = google.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('google.com', params['url'])
+        self.assertIn('PREF', params['cookies'])
+        self.assertIn('fr', params['headers']['Accept-Language'])
+
+        dicto['language'] = 'all'
+        params = google.request(query, dicto)
+        self.assertIn('en', params['headers']['Accept-Language'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, google.response, None)
+        self.assertRaises(AttributeError, google.response, [])
+        self.assertRaises(AttributeError, google.response, '')
+        self.assertRaises(AttributeError, google.response, '[]')
+
+        response = mock.Mock(text='<html></html>')
+        self.assertEqual(google.response(response), [])
+
+        html = """
+        <li class="g">
+            <h3 class="r">
+                <a href="http://this.should.be.the.link/">
+                    <b>This</b> is <b>the</b> title
+                </a>
+            </h3>
+            <div class="s">
+                <div class="kv" style="margin-bottom:2px">
+                    <cite>
+                        <b>test</b>.psychologies.com/
+                    </cite>
+                    <div class="_nBb">‎
+                        <div style="display:inline" onclick="google.sham(this);" aria-expanded="false"
+                            aria-haspopup="true" tabindex="0" data-ved="0CBUQ7B0wAA">
+                            <span class="_O0">
+                            </span>
+                        </div>
+                        <div style="display:none" class="am-dropdown-menu" role="menu" tabindex="-1">
+                            <ul>
+                                <li class="_Ykb">
+                                    <a class="_Zkb" href="http://www.google.fr/url?url=http://webcache.googleusercontent
+                                        .com/search%3Fcache:R1Z_4pGXjuIJ:http://test.psychologies.com/">
+                                        En cache
+                                    </a>
+                                </li>
+                                <li class="_Ykb">
+                                    <a class="_Zkb" href="/search?safe=off&amp;q=related:test.psy.com/">
+                                        Pages similaires
+                                    </a>
+                                </li>
+                            </ul>
+                        </div>
+                    </div>
+                </div>
+                <span class="st">
+                    This should be the content.
+                </span>
+                <br>
+                <div class="osl">‎
+                    <a href="http://www.google.fr/url?url=http://test.psychologies.com/tests/">
+                        Test Personnalité
+                    </a> - ‎
+                    <a href="http://www.google.fr/url?url=http://test.psychologies.com/test/">
+                        Tests - Moi
+                    </a> - ‎
+                    <a href="http://www.google.fr/url?url=http://test.psychologies.com/test/tests-couple">
+                        Test Couple
+                    </a>
+                    - ‎
+                    <a href="http://www.google.fr/url?url=http://test.psychologies.com/tests/tests-amour">
+                        Test Amour
+                    </a>
+                </div>
+            </div>
+        </li>
+        <li class="g">
+            <h3 class="r">
+                <a href="http://www.google.com/images?q=toto">
+                    <b>This</b>
+                </a>
+            </h3>
+        </li>
+        <li class="g">
+            <h3 class="r">
+                <a href="http://www.google.com/search?q=toto">
+                    <b>This</b> is
+                </a>
+            </h3>
+        </li>
+        <li class="g">
+            <h3 class="r">
+                <a href="€">
+                    <b>This</b> is <b>the</b>
+                </a>
+            </h3>
+        </li>
+        <li class="g">
+            <h3 class="r">
+                <a href="/url?q=url">
+                    <b>This</b> is <b>the</b>
+                </a>
+            </h3>
+        </li>
+        <p class="_Bmc" style="margin:3px 8px">
+            <a href="/search?num=20&amp;safe=off&amp;q=t&amp;revid=1754833769&amp;sa=X&amp;ei=-&amp;ved=">
+                suggestion <b>title</b>
+            </a>
+        </p>
+        """
+        response = mock.Mock(text=html)
+        results = google.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 2)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'http://this.should.be.the.link/')
+        self.assertEqual(results[0]['content'], 'This should be the content.')
+        self.assertEqual(results[1]['suggestion'], 'suggestion title')
+
+        html = """
+        <li class="b_algo" u="0|5109|4755453613245655|UAGjXgIrPH5yh-o5oNHRx_3Zta87f_QO">
+        </li>
+        """
+        response = mock.Mock(text=html)
+        results = google.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
+
+    def test_parse_images(self):
+        html = """
+        <li>
+            <div>
+                <a href="http://www.google.com/url?q=http://this.is.the.url/">
+                    <img style="margin:3px 0;margin-right:6px;padding:0" height="90"
+                        src="https://this.is.the.image/image.jpg" width="60" align="middle" alt="" border="0">
+                </a>
+            </div>
+        </li>
+        """
+        dom = lxml.html.fromstring(html)
+        results = google.parse_images(dom)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/')
+        self.assertEqual(results[0]['title'], '')
+        self.assertEqual(results[0]['content'], '')
+        self.assertEqual(results[0]['img_src'], 'https://this.is.the.image/image.jpg')
diff --git a/searx/tests/engines/test_mediawiki.py b/searx/tests/engines/test_mediawiki.py
new file mode 100644
index 00000000..63f7da6b
--- /dev/null
+++ b/searx/tests/engines/test_mediawiki.py
@@ -0,0 +1,130 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import mediawiki
+from searx.testing import SearxTestCase
+
+
+class TestMediawikiEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = mediawiki.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('wikipedia.org', params['url'])
+        self.assertIn('fr', params['url'])
+
+        dicto['language'] = 'all'
+        params = mediawiki.request(query, dicto)
+        self.assertIn('en', params['url'])
+
+        mediawiki.base_url = "http://test.url/"
+        mediawiki.search_url = mediawiki.base_url +\
+                                 'w/api.php?action=query'\
+                                 '&list=search'\
+                                 '&{query}'\
+                                 '&srprop=timestamp'\
+                                 '&format=json'\
+                                 '&sroffset={offset}'\
+                                 '&srlimit={limit}'     # noqa
+        params = mediawiki.request(query, dicto)
+        self.assertIn('test.url', params['url'])
+
+    def test_response(self):
+        dicto = defaultdict(dict)
+        dicto['language'] = 'fr'
+        mediawiki.base_url = "https://{language}.wikipedia.org/"
+
+        self.assertRaises(AttributeError, mediawiki.response, None)
+        self.assertRaises(AttributeError, mediawiki.response, [])
+        self.assertRaises(AttributeError, mediawiki.response, '')
+        self.assertRaises(AttributeError, mediawiki.response, '[]')
+
+        response = mock.Mock(text='{}', search_params=dicto)
+        self.assertEqual(mediawiki.response(response), [])
+
+        response = mock.Mock(text='{"data": []}', search_params=dicto)
+        self.assertEqual(mediawiki.response(response), [])
+
+        json = """
+        {
+            "query-continue": {
+                "search": {
+                    "sroffset": 1
+                }
+            },
+            "query": {
+                "searchinfo": {
+                    "totalhits": 29721
+                },
+                "search": [
+                    {
+                        "ns": 0,
+                        "title": "This is the title étude",
+                        "timestamp": "2014-12-19T17:42:52Z"
+                    }
+                ]
+            }
+        }
+        """
+        response = mock.Mock(text=json, search_params=dicto)
+        results = mediawiki.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], u'This is the title étude')
+        self.assertIn('fr.wikipedia.org', results[0]['url'])
+        self.assertIn('This_is_the_title', results[0]['url'])
+        self.assertIn('%C3%A9tude', results[0]['url'])
+        self.assertEqual(results[0]['content'], '')
+
+        json = """
+        {
+            "query-continue": {
+                "search": {
+                    "sroffset": 1
+                }
+            },
+            "query": {
+                "searchinfo": {
+                    "totalhits": 29721
+                },
+                "search": [
+                ]
+            }
+        }
+        """
+        response = mock.Mock(text=json, search_params=dicto)
+        results = mediawiki.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
+
+        json = """
+        {
+            "query-continue": {
+                "search": {
+                    "sroffset": 1
+                }
+            },
+            "query": {
+            }
+        }
+        """
+        response = mock.Mock(text=json, search_params=dicto)
+        results = mediawiki.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
+
+        json = """
+        {"toto":[
+            {"id":200,"name":"Artist Name",
+            "link":"http:\/\/www.mediawiki.com\/artist\/1217","type":"artist"}
+        ]}
+        """
+        response = mock.Mock(text=json, search_params=dicto)
+        results = mediawiki.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/engines/test_openstreetmap.py b/searx/tests/engines/test_openstreetmap.py
new file mode 100644
index 00000000..7b7783f0
--- /dev/null
+++ b/searx/tests/engines/test_openstreetmap.py
@@ -0,0 +1,199 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import openstreetmap
+from searx.testing import SearxTestCase
+
+
+class TestOpenstreetmapEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        params = openstreetmap.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('openstreetmap.org', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, openstreetmap.response, None)
+        self.assertRaises(AttributeError, openstreetmap.response, [])
+        self.assertRaises(AttributeError, openstreetmap.response, '')
+        self.assertRaises(AttributeError, openstreetmap.response, '[]')
+
+        response = mock.Mock(text='{}')
+        self.assertEqual(openstreetmap.response(response), [])
+
+        response = mock.Mock(text='{"data": []}')
+        self.assertEqual(openstreetmap.response(response), [])
+
+        json = """
+        [
+          {
+            "place_id": "127732055",
+            "licence": "Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright",
+            "osm_type": "relation",
+            "osm_id": "7444",
+            "boundingbox": [
+              "48.8155755",
+              "48.902156",
+              "2.224122",
+              "2.4697602"
+            ],
+            "lat": "48.8565056",
+            "lon": "2.3521334",
+            "display_name": "This is the title",
+            "class": "place",
+            "type": "city",
+            "importance": 0.96893459932191,
+            "icon": "https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png",
+            "address": {
+              "city": "Paris",
+              "county": "Paris",
+              "state": "Île-de-France",
+              "country": "France",
+              "country_code": "fr"
+            },
+            "geojson": {
+              "type": "Polygon",
+              "coordinates": [
+                [
+                  [
+                    2.224122,
+                    48.854199
+                  ]
+                ]
+              ]
+            }
+          }
+        ]
+        """
+        response = mock.Mock(text=json)
+        results = openstreetmap.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'https://openstreetmap.org/relation/7444')
+        self.assertIn('coordinates', results[0]['geojson'])
+        self.assertEqual(results[0]['geojson']['coordinates'][0][0][0], 2.224122)
+        self.assertEqual(results[0]['geojson']['coordinates'][0][0][1], 48.854199)
+        self.assertEqual(results[0]['address'], None)
+        self.assertIn('48.8155755', results[0]['boundingbox'])
+        self.assertIn('48.902156', results[0]['boundingbox'])
+        self.assertIn('2.224122', results[0]['boundingbox'])
+        self.assertIn('2.4697602', results[0]['boundingbox'])
+
+        json = """
+        [
+          {
+            "place_id": "127732055",
+            "licence": "Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright",
+            "osm_type": "relation",
+            "osm_id": "7444",
+            "boundingbox": [
+              "48.8155755",
+              "48.902156",
+              "2.224122",
+              "2.4697602"
+            ],
+            "lat": "48.8565056",
+            "lon": "2.3521334",
+            "display_name": "This is the title",
+            "class": "tourism",
+            "type": "city",
+            "importance": 0.96893459932191,
+            "icon": "https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png",
+            "address": {
+              "city": "Paris",
+              "county": "Paris",
+              "state": "Île-de-France",
+              "country": "France",
+              "country_code": "fr",
+              "address29": "Address"
+            },
+            "geojson": {
+              "type": "Polygon",
+              "coordinates": [
+                [
+                  [
+                    2.224122,
+                    48.854199
+                  ]
+                ]
+              ]
+            }
+          },
+          {
+            "place_id": "127732055",
+            "licence": "Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright",
+            "osm_type": "relation",
+            "osm_id": "7444",
+            "boundingbox": [
+              "48.8155755",
+              "48.902156",
+              "2.224122",
+              "2.4697602"
+            ],
+            "lat": "48.8565056",
+            "lon": "2.3521334",
+            "display_name": "This is the title",
+            "class": "tourism",
+            "type": "city",
+            "importance": 0.96893459932191,
+            "icon": "https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png",
+            "address": {
+              "city": "Paris",
+              "county": "Paris",
+              "state": "Île-de-France",
+              "country": "France",
+              "postcode": 75000,
+              "country_code": "fr"
+            },
+            "geojson": {
+              "type": "Polygon",
+              "coordinates": [
+                [
+                  [
+                    2.224122,
+                    48.854199
+                  ]
+                ]
+              ]
+            }
+          },
+          {
+            "place_id": "127732055",
+            "licence": "Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright",
+            "osm_type": "node",
+            "osm_id": "7444",
+            "boundingbox": [
+              "48.8155755",
+              "48.902156",
+              "2.224122",
+              "2.4697602"
+            ],
+            "lat": "48.8565056",
+            "lon": "2.3521334",
+            "display_name": "This is the title",
+            "class": "tourism",
+            "type": "city",
+            "importance": 0.96893459932191,
+            "icon": "https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png",
+            "address": {
+              "city": "Paris",
+              "county": "Paris",
+              "state": "Île-de-France",
+              "country": "France",
+              "country_code": "fr",
+              "address29": "Address"
+            }
+          }
+        ]
+        """
+        response = mock.Mock(text=json)
+        results = openstreetmap.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 3)
+        self.assertIn('48.8565056', results[2]['geojson']['coordinates'])
+        self.assertIn('2.3521334', results[2]['geojson']['coordinates'])
diff --git a/searx/tests/engines/test_photon.py b/searx/tests/engines/test_photon.py
new file mode 100644
index 00000000..73449788
--- /dev/null
+++ b/searx/tests/engines/test_photon.py
@@ -0,0 +1,166 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import photon
+from searx.testing import SearxTestCase
+
+
+class TestPhotonEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'all'
+        params = photon.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('photon.komoot.de', params['url'])
+
+        dicto['language'] = 'all'
+        params = photon.request(query, dicto)
+        self.assertNotIn('lang', params['url'])
+
+        dicto['language'] = 'al'
+        params = photon.request(query, dicto)
+        self.assertNotIn('lang', params['url'])
+
+        dicto['language'] = 'fr'
+        params = photon.request(query, dicto)
+        self.assertIn('fr', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, photon.response, None)
+        self.assertRaises(AttributeError, photon.response, [])
+        self.assertRaises(AttributeError, photon.response, '')
+        self.assertRaises(AttributeError, photon.response, '[]')
+
+        response = mock.Mock(text='{}')
+        self.assertEqual(photon.response(response), [])
+
+        response = mock.Mock(text='{"data": []}')
+        self.assertEqual(photon.response(response), [])
+
+        json = """
+        {
+          "features": [
+            {
+              "properties": {
+                "osm_key": "waterway",
+                "extent": [
+                  -1.4508446,
+                  51.1614997,
+                  -1.4408036,
+                  51.1525635
+                ],
+                "name": "This is the title",
+                "state": "England",
+                "osm_id": 114823817,
+                "osm_type": "W",
+                "osm_value": "river",
+                "city": "Test Valley",
+                "country": "United Kingdom"
+              },
+              "type": "Feature",
+              "geometry": {
+                "type": "Point",
+                "coordinates": [
+                  -1.4458571,
+                  51.1576661
+                ]
+              }
+            },
+            {
+              "properties": {
+                "osm_key": "place",
+                "street": "Rue",
+                "state": "Ile-de-France",
+                "osm_id": 129211377,
+                "osm_type": "R",
+                "housenumber": "10",
+                "postcode": "75011",
+                "osm_value": "house",
+                "city": "Paris",
+                "country": "France"
+              },
+              "type": "Feature",
+              "geometry": {
+                "type": "Point",
+                "coordinates": [
+                  2.3725025,
+                  48.8654481
+                ]
+              }
+            },
+            {
+              "properties": {
+                "osm_key": "amenity",
+                "street": "Allée",
+                "name": "Bibliothèque",
+                "state": "Ile-de-France",
+                "osm_id": 1028573132,
+                "osm_type": "N",
+                "postcode": "75001",
+                "osm_value": "library",
+                "city": "Paris",
+                "country": "France"
+              },
+              "type": "Feature",
+              "geometry": {
+                "type": "Point",
+                "coordinates": [
+                  2.3445634,
+                  48.862494
+                ]
+              }
+            },
+            {
+              "properties": {
+                "osm_key": "amenity",
+                "osm_id": 1028573132,
+                "osm_type": "Y",
+                "postcode": "75001",
+                "osm_value": "library",
+                "city": "Paris",
+                "country": "France"
+              },
+              "type": "Feature",
+              "geometry": {
+                "type": "Point",
+                "coordinates": [
+                  2.3445634,
+                  48.862494
+                ]
+              }
+            },
+            {
+            }
+        ],
+          "type": "FeatureCollection"
+        }
+        """
+        response = mock.Mock(text=json)
+        results = photon.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 3)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['content'], '')
+        self.assertEqual(results[0]['longitude'], -1.4458571)
+        self.assertEqual(results[0]['latitude'], 51.1576661)
+        self.assertIn(-1.4508446, results[0]['boundingbox'])
+        self.assertIn(51.1614997, results[0]['boundingbox'])
+        self.assertIn(-1.4408036, results[0]['boundingbox'])
+        self.assertIn(51.1525635, results[0]['boundingbox'])
+        self.assertIn('type', results[0]['geojson'])
+        self.assertEqual(results[0]['geojson']['type'], 'Point')
+        self.assertEqual(results[0]['address'], None)
+        self.assertEqual(results[0]['osm']['type'], 'way')
+        self.assertEqual(results[0]['osm']['id'], 114823817)
+        self.assertEqual(results[0]['url'], 'https://openstreetmap.org/way/114823817')
+        self.assertEqual(results[1]['osm']['type'], 'relation')
+        self.assertEqual(results[2]['address']['name'], u'Bibliothèque')
+        self.assertEqual(results[2]['address']['house_number'], None)
+        self.assertEqual(results[2]['address']['locality'], 'Paris')
+        self.assertEqual(results[2]['address']['postcode'], '75001')
+        self.assertEqual(results[2]['address']['country'], 'France')
+        self.assertEqual(results[2]['osm']['type'], 'node')
diff --git a/searx/tests/engines/test_startpage.py b/searx/tests/engines/test_startpage.py
new file mode 100644
index 00000000..07f13ee2
--- /dev/null
+++ b/searx/tests/engines/test_startpage.py
@@ -0,0 +1,140 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import startpage
+from searx.testing import SearxTestCase
+
+
+class TestStartpageEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = startpage.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn('startpage.com', params['url'])
+        self.assertIn('data', params)
+        self.assertIn('query', params['data'])
+        self.assertIn(query, params['data']['query'])
+        self.assertIn('with_language', params['data'])
+        self.assertIn('lang_fr', params['data']['with_language'])
+
+        dicto['language'] = 'all'
+        params = startpage.request(query, dicto)
+        self.assertNotIn('with_language', params['data'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, startpage.response, None)
+        self.assertRaises(AttributeError, startpage.response, [])
+        self.assertRaises(AttributeError, startpage.response, '')
+        self.assertRaises(AttributeError, startpage.response, '[]')
+
+        response = mock.Mock(content='<html></html>')
+        self.assertEqual(startpage.response(response), [])
+
+        html = """
+        <div class='result' style=' *width : auto; *margin-right : 10%;'>
+            <h3>
+                <a href='http://this.should.be.the.link/' id='title_2' name='title_2' >
+                    This should be the title
+                </a>
+                <span id='title_stars_2' name='title_stars_2'>  </span>
+            </h3>
+            <p class='desc'>
+                This should be the content.
+            </p>
+            <p>
+                <span class='url'>www.speed<b>test</b>.net/fr/
+                </span>
+                  -
+                <A class="proxy" id="proxy_link" HREF="https://ixquick-proxy.com/do/spg/proxy?ep=&edata=&ek=&ekdata="
+                    class='proxy'>
+                    Navigation avec Ixquick Proxy
+                </A>
+                    -
+                <A HREF="https://ixquick-proxy.com/do/spg/highlight.pl?l=francais&c=hf&cat=web&q=test&rl=NONE&rid=
+                    &hlq=https://startpage.com/do/search&mtabp=-1&mtcmd=process_search&mtlanguage=francais&mtengine0=
+                    &mtcat=web&u=http:%2F%2Fwww.speedtest.net%2Ffr%2F" class='proxy'>
+                    Mis en surbrillance
+                </A>
+            </p>
+        </div>
+        """
+        response = mock.Mock(content=html)
+        results = startpage.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This should be the title')
+        self.assertEqual(results[0]['url'], 'http://this.should.be.the.link/')
+        self.assertEqual(results[0]['content'], 'This should be the content.')
+
+        html = """
+        <div class='result' style=' *width : auto; *margin-right : 10%;'>
+            <h3>
+                <a href='http://www.google.com/aclk?sa=l&ai=C' id='title_2' name='title_2' >
+                    This should be the title
+                </a>
+                <span id='title_stars_2' name='title_stars_2'>  </span>
+            </h3>
+            <p class='desc'>
+                This should be the content.
+            </p>
+            <p>
+                <span class='url'>www.speed<b>test</b>.net/fr/
+                </span>
+                  -
+                <A class="proxy" id="proxy_link" HREF="https://ixquick-proxy.com/do/spg/proxy?ep=&edata=&ek=&ekdata="
+                    class='proxy'>
+                    Navigation avec Ixquick Proxy
+                </A>
+                    -
+                <A HREF="https://ixquick-proxy.com/do/spg/highlight.pl?l=francais&c=hf&cat=web&q=test&rl=NONE&rid=
+                    &hlq=https://startpage.com/do/search&mtabp=-1&mtcmd=process_search&mtlanguage=francais&mtengine0=
+                    &mtcat=web&u=http:%2F%2Fwww.speedtest.net%2Ffr%2F" class='proxy'>
+                    Mis en surbrillance
+                </A>
+            </p>
+        </div>
+        <div class='result' style=' *width : auto; *margin-right : 10%;'>
+            <h3>
+                <span id='title_stars_2' name='title_stars_2'>  </span>
+            </h3>
+            <p class='desc'>
+                This should be the content.
+            </p>
+            <p>
+                <span class='url'>www.speed<b>test</b>.net/fr/
+                </span>
+            </p>
+        </div>
+        <div class='result' style=' *width : auto; *margin-right : 10%;'>
+            <h3>
+                <a href='http://this.should.be.the.link/' id='title_2' name='title_2' >
+                    This should be the title
+                </a>
+                <span id='title_stars_2' name='title_stars_2'>  </span>
+            </h3>
+            <p>
+                <span class='url'>www.speed<b>test</b>.net/fr/
+                </span>
+                  -
+                <A class="proxy" id="proxy_link" HREF="https://ixquick-proxy.com/do/spg/proxy?ep=&edata=&ek=&ekdata="
+                    class='proxy'>
+                    Navigation avec Ixquick Proxy
+                </A>
+                    -
+                <A HREF="https://ixquick-proxy.com/do/spg/highlight.pl?l=francais&c=hf&cat=web&q=test&rl=NONE&rid=
+                    &hlq=https://startpage.com/do/search&mtabp=-1&mtcmd=process_search&mtlanguage=francais&mtengine0=
+                    &mtcat=web&u=http:%2F%2Fwww.speedtest.net%2Ffr%2F" class='proxy'>
+                    Mis en surbrillance
+                </A>
+            </p>
+        </div>
+        """
+        response = mock.Mock(content=html)
+        results = startpage.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['content'], '')
diff --git a/searx/tests/engines/test_subtitleseeker.py b/searx/tests/engines/test_subtitleseeker.py
new file mode 100644
index 00000000..a641601b
--- /dev/null
+++ b/searx/tests/engines/test_subtitleseeker.py
@@ -0,0 +1,169 @@
+from collections import defaultdict
+import mock
+from searx.engines import subtitleseeker
+from searx.testing import SearxTestCase
+
+
+class TestSubtitleseekerEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        params = subtitleseeker.request(query, dicto)
+        self.assertTrue('url' in params)
+        self.assertTrue(query in params['url'])
+        self.assertTrue('subtitleseeker.com' in params['url'])
+
+    def test_response(self):
+        dicto = defaultdict(dict)
+        dicto['language'] = 'fr_FR'
+        response = mock.Mock(search_params=dicto)
+
+        self.assertRaises(AttributeError, subtitleseeker.response, None)
+        self.assertRaises(AttributeError, subtitleseeker.response, [])
+        self.assertRaises(AttributeError, subtitleseeker.response, '')
+        self.assertRaises(AttributeError, subtitleseeker.response, '[]')
+
+        response = mock.Mock(text='<html></html>', search_params=dicto)
+        self.assertEqual(subtitleseeker.response(response), [])
+
+        html = """
+        <div class="boxRows">
+            <div class="boxRowsInner" style="width:600px;">
+                <img src="http://static.subtitleseeker.com/images/movie.gif"
+                    style="width:16px; height:16px;" class="icon">
+                <a href="http://this.is.the.url/"
+                    class="blue" title="Title subtitle" >
+                    This is the Title
+                </a>
+                <br><br>
+                <span class="f10b grey-dark arial" style="padding:0px 0px 5px 20px">
+                    "Alternative Title"
+                </span>
+            </div>
+            <div class="boxRowsInner f12b red" style="width:70px;">
+                1998
+            </div>
+            <div class="boxRowsInner grey-web f12" style="width:120px;">
+                <img src="http://static.subtitleseeker.com/images/basket_put.png"
+                    style="width:16px; height:16px;" class="icon">
+                1039 Subs
+            </div>
+            <div class="boxRowsInner grey-web f10" style="width:130px;">
+                <img src="http://static.subtitleseeker.com/images/arrow_refresh_small.png"
+                    style="width:16px; height:16px;" class="icon">
+                1 hours ago
+            </div>
+            <div class="clear"></div>
+        </div>
+        """
+        response = mock.Mock(text=html, search_params=dicto)
+        results = subtitleseeker.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the Title')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/French/')
+        self.assertIn('1998', results[0]['content'])
+        self.assertIn('1039 Subs', results[0]['content'])
+        self.assertIn('Alternative Title', results[0]['content'])
+
+        html = """
+        <div class="boxRows">
+            <div class="boxRowsInner" style="width:600px;">
+                <img src="http://static.subtitleseeker.com/images/movie.gif"
+                    style="width:16px; height:16px;" class="icon">
+                <a href="http://this.is.the.url/"
+                    class="blue" title="Title subtitle" >
+                    This is the Title
+                </a>
+            </div>
+            <div class="boxRowsInner f12b red" style="width:70px;">
+                1998
+            </div>
+            <div class="boxRowsInner grey-web f12" style="width:120px;">
+                <img src="http://static.subtitleseeker.com/images/basket_put.png"
+                    style="width:16px; height:16px;" class="icon">
+                1039 Subs
+            </div>
+            <div class="boxRowsInner grey-web f10" style="width:130px;">
+                <img src="http://static.subtitleseeker.com/images/arrow_refresh_small.png"
+                    style="width:16px; height:16px;" class="icon">
+                1 hours ago
+            </div>
+            <div class="clear"></div>
+        </div>
+        """
+        dicto['language'] = 'all'
+        response = mock.Mock(text=html, search_params=dicto)
+        results = subtitleseeker.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the Title')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/')
+        self.assertIn('1998', results[0]['content'])
+        self.assertIn('1039 Subs', results[0]['content'])
+
+        html = """
+        <div class="boxRows">
+            <div class="boxRowsInner" style="width:600px;">
+                <img src="http://static.subtitleseeker.com/images/movie.gif"
+                    style="width:16px; height:16px;" class="icon">
+                <a href="http://this.is.the.url/"
+                    class="blue" title="Title subtitle" >
+                    This is the Title
+                </a>
+            </div>
+            <div class="boxRowsInner f12b red" style="width:70px;">
+                1998
+            </div>
+            <div class="boxRowsInner grey-web f12" style="width:120px;">
+                <img src="http://static.subtitleseeker.com/images/basket_put.png"
+                    style="width:16px; height:16px;" class="icon">
+                1039 Subs
+            </div>
+            <div class="boxRowsInner grey-web f10" style="width:130px;">
+                <img src="http://static.subtitleseeker.com/images/arrow_refresh_small.png"
+                    style="width:16px; height:16px;" class="icon">
+                1 hours ago
+            </div>
+            <div class="clear"></div>
+        </div>
+        """
+        subtitleseeker.language = 'English'
+        response = mock.Mock(text=html, search_params=dicto)
+        results = subtitleseeker.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the Title')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/English/')
+        self.assertIn('1998', results[0]['content'])
+        self.assertIn('1039 Subs', results[0]['content'])
+
+        html = """
+        <div class="boxRowsInner" style="width:600px;">
+            <img src="http://static.subtitleseeker.com/images/movie.gif"
+                style="width:16px; height:16px;" class="icon">
+            <a href="http://this.is.the.url/"
+                class="blue" title="Title subtitle" >
+                This is the Title
+            </a>
+        </div>
+        <div class="boxRowsInner f12b red" style="width:70px;">
+            1998
+        </div>
+        <div class="boxRowsInner grey-web f12" style="width:120px;">
+            <img src="http://static.subtitleseeker.com/images/basket_put.png"
+                style="width:16px; height:16px;" class="icon">
+            1039 Subs
+        </div>
+        <div class="boxRowsInner grey-web f10" style="width:130px;">
+            <img src="http://static.subtitleseeker.com/images/arrow_refresh_small.png"
+                style="width:16px; height:16px;" class="icon">
+            1 hours ago
+        </div>
+        """
+        response = mock.Mock(text=html, search_params=dicto)
+        results = subtitleseeker.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/engines/test_twitter.py b/searx/tests/engines/test_twitter.py
new file mode 100644
index 00000000..b444b48e
--- /dev/null
+++ b/searx/tests/engines/test_twitter.py
@@ -0,0 +1,502 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import twitter
+from searx.testing import SearxTestCase
+
+
+class TestTwitterEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 0
+        dicto['language'] = 'fr_FR'
+        params = twitter.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('twitter.com', params['url'])
+        self.assertIn('cookies', params)
+        self.assertIn('lang', params['cookies'])
+        self.assertIn('fr', params['cookies']['lang'])
+
+        dicto['language'] = 'all'
+        params = twitter.request(query, dicto)
+        self.assertIn('cookies', params)
+        self.assertIn('lang', params['cookies'])
+        self.assertIn('en', params['cookies']['lang'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, twitter.response, None)
+        self.assertRaises(AttributeError, twitter.response, [])
+        self.assertRaises(AttributeError, twitter.response, '')
+        self.assertRaises(AttributeError, twitter.response, '[]')
+
+        response = mock.Mock(text='<html></html>')
+        self.assertEqual(twitter.response(response), [])
+
+        html = """
+        <li class="js-stream-item stream-item stream-item expanding-stream-item" data-item-id="563005573290287105"
+            id="stream-item-tweet-563005573290287105" data-item-type="tweet">
+            <div class="tweet original-tweet js-stream-tweet js-actionable-tweet js-profile-popup-actionable
+                js-original-tweet has-cards has-native-media" data-tweet-id="563005573290287105" data-disclosure-type=""
+                data-item-id="563005573290287105" data-screen-name="Jalopnik" data-name="Jalopnik"
+                data-user-id="3060631" data-has-native-media="true" data-has-cards="true" data-card-type="photo"
+                data-expanded-footer="&lt;div class=&quot;js-tweet-details-fixer
+                tweet-details-fixer&quot;&gt;&#10;&#10;&#10;
+                &lt;div class=&quot;cards-media-container js-media-container&quot;&gt;&lt;div
+                data-card-url=&quot;//twitter.com/Jalopnik/status/563005573290287105/photo/1&quot; data-card-type=&quot;
+                photo&quot; class=&quot;cards-base cards-multimedia&quot; data-element-context=&quot;platform_photo_card
+                &quot;&gt;&#10;&#10;&#10;  &lt;a class=&quot;media media-thumbnail twitter-timeline-link is-preview
+                &quot; data-url=&quot;https://pbs.twimg.com/media/B9Aylf5IMAAuziP.jpg:large&quot;
+                data-resolved-url-large=&quot;https://pbs.twimg.com/media/B9Aylf5IMAAuziP.jpg:large&quot;
+                href=&quot;//twitter.com/Jalopnik/status/563005573290287105/photo/1&quot;&gt;&#10;
+                &lt;div class=&quot;&quot;&gt;&#10; &lt;img src=&quot;
+                https://pbs.twimg.com/media/B9Aylf5IMAAuziP.jpg&quot;
+                alt=&quot;Embedded image permalink&quot; width=&quot;636&quot; height=&quot;309&quot;&gt;&#10;
+                &lt;/div&gt;&#10;&#10;  &lt;/a&gt;&#10;&#10;  &lt;div class=&quot;cards-content&quot;&gt;&#10;
+                &lt;div class=&quot;byline&quot;&gt;&#10;      &#10;    &lt;/div&gt;&#10;    &#10;  &lt;/div&gt;&#10;
+                &#10;&lt;/div&gt;&#10;&#10;&#10;&#10;&#10;&lt;/div&gt;&#10;&#10;&#10;&#10;  &lt;div
+                class=&quot;js-machine-translated-tweet-container&quot;&gt;&lt;/div&gt;&#10;    &lt;div
+                class=&quot;js-tweet-stats-container tweet-stats-container &quot;&gt;&#10;    &lt;/div&gt;&#10;&#10;
+                &lt;div class=&quot;client-and-actions&quot;&gt;&#10;  &lt;span class=&quot;metadata&quot;&gt;&#10;
+                &lt;span&gt;5:06 PM - 4 Feb 2015&lt;/span&gt;&#10;&#10;       &amp;middot; &lt;a
+                class=&quot;permalink-link js-permalink js-nav&quot; href=&quot;/Jalopnik/status/563005573290287105
+                &quot;tabindex=&quot;-1&quot;&gt;Details&lt;/a&gt;&#10;    &#10;&#10;        &#10;        &#10;
+                &#10;&#10;  &lt;/span&gt;&#10;&lt;/div&gt;&#10;&#10;&#10;&lt;/div&gt;&#10;" data-you-follow="false"
+                data-you-block="false">
+                <div class="context">
+                </div>
+                <div class="content">
+                    <div class="stream-item-header">
+                        <a class="account-group js-account-group js-action-profile js-user-profile-link js-nav"
+                            href="/Jalopnik" data-user-id="3060631">
+                            <img class="avatar js-action-profile-avatar"
+                                src="https://pbs.twimg.com/profile_images/2976430168/5cd4a59_bigger.jpeg" alt="">
+                            <strong class="fullname js-action-profile-name show-popup-with-id" data-aria-label-part>
+                                Jalopnik
+                            </strong>
+                            <span>&rlm;</span>
+                            <span class="username js-action-profile-name" data-aria-label-part>
+                            <s>@</s><b>TitleName</b>
+                            </span>
+                        </a>
+                        <small class="time">
+                        <a href="/this.is.the.url"
+                            class="tweet-timestamp js-permalink js-nav js-tooltip" title="5:06 PM - 4 Feb 2015" >
+                            <span class="u-hiddenVisually" data-aria-label-part="last">17 minutes ago</span>
+                        </a>
+                        </small>
+                    </div>
+                    <p class="js-tweet-text tweet-text" lang="en" data-aria-label-part="0">
+                        This is the content étude à€
+                        <a href="http://t.co/nRWsqQAwBL" rel="nofollow" dir="ltr"
+                            data-expanded-url="http://jalo.ps/ReMENu4" class="twitter-timeline-link"
+                            target="_blank" title="http://jalo.ps/ReMENu4" >
+                        <span class="tco-ellipsis">
+                        </span>
+                        <span class="invisible">http://</span><span class="js-display-url">link.in.tweet</span>
+                        <span class="invisible"></span>
+                        <span class="tco-ellipsis">
+                            <span class="invisible">&nbsp;</span>
+                        </span>
+                    </a>
+                    <a href="http://t.co/rbFsfeE0l3" class="twitter-timeline-link u-hidden"
+                        data-pre-embedded="true" dir="ltr">
+                        pic.twitter.com/rbFsfeE0l3
+                    </a>
+                    </p>
+                    <div class="expanded-content js-tweet-details-dropdown">
+                    </div>
+                    <div class="stream-item-footer">
+                        <a class="details with-icn js-details" href="/Jalopnik/status/563005573290287105">
+                            <span class="Icon Icon--photo">
+                            </span>
+                            <b>
+                                <span class="expand-stream-item js-view-details">
+                                    View photo
+                                </span>
+                                <span class="collapse-stream-item  js-hide-details">
+                                    Hide photo
+                                </span>
+                            </b>
+                        </a>
+                        <span class="ProfileTweet-action--reply u-hiddenVisually">
+                            <span class="ProfileTweet-actionCount" aria-hidden="true" data-tweet-stat-count="0">
+                                <span class="ProfileTweet-actionCountForAria" >0 replies</span>
+                            </span>
+                        </span>
+                        <span class="ProfileTweet-action--retweet u-hiddenVisually">
+                            <span class="ProfileTweet-actionCount"  data-tweet-stat-count="8">
+                                <span class="ProfileTweet-actionCountForAria" data-aria-label-part>8 retweets</span>
+                            </span>
+                        </span>
+                        <span class="ProfileTweet-action--favorite u-hiddenVisually">
+                            <span class="ProfileTweet-actionCount"  data-tweet-stat-count="14">
+                                <span class="ProfileTweet-actionCountForAria" data-aria-label-part>14 favorites</span>
+                            </span>
+                        </span>
+                        <div role="group" aria-label="Tweet actions" class="ProfileTweet-actionList u-cf js-actions">
+                            <div class="ProfileTweet-action ProfileTweet-action--reply">
+                                <button class="ProfileTweet-actionButton u-textUserColorHover js-actionButton
+                                    js-actionReply" data-modal="ProfileTweet-reply" type="button" title="Reply">
+                                    <span class="Icon Icon--reply">
+                                    </span>
+                                    <span class="u-hiddenVisually">Reply</span>
+                                    <span class="ProfileTweet-actionCount u-textUserColorHover
+                                        ProfileTweet-actionCount--isZero">
+                                        <span class="ProfileTweet-actionCountForPresentation" aria-hidden="true">
+                                        </span>
+                                    </span>
+                                </button>
+                            </div>
+                            <div class="ProfileTweet-action ProfileTweet-action--retweet js-toggleState js-toggleRt">
+                                <button class="ProfileTweet-actionButton  js-actionButton js-actionRetweet js-tooltip"
+                                    title="Retweet" data-modal="ProfileTweet-retweet" type="button">
+                                    <span class="Icon Icon--retweet">
+                                    </span>
+                                    <span class="u-hiddenVisually">Retweet</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">8</span>
+                                    </span>
+                                </button>
+                                <button class="ProfileTweet-actionButtonUndo js-actionButton js-actionRetweet"
+                                    data-modal="ProfileTweet-retweet" title="Undo retweet" type="button">
+                                    <span class="Icon Icon--retweet">
+                                    </span>
+                                    <span class="u-hiddenVisually">Retweeted</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">8</span>
+                                    </span>
+                                </button>
+                            </div>
+                            <div class="ProfileTweet-action ProfileTweet-action--favorite js-toggleState">
+                                <button class="ProfileTweet-actionButton js-actionButton js-actionFavorite js-tooltip"
+                                    title="Favorite" type="button">
+                                    <span class="Icon Icon--favorite">
+                                    </span>
+                                    <span class="u-hiddenVisually">Favorite</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">14</span>
+                                    </span>
+                                </button>
+                                <button class="ProfileTweet-actionButtonUndo u-linkClean js-actionButton
+                                    js-actionFavorite" title="Undo favorite" type="button">
+                                    <span class="Icon Icon--favorite">
+                                    </span>
+                                    <span class="u-hiddenVisually">Favorited</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">
+                                            14
+                                        </span>
+                                    </span>
+                                </button>
+                            </div>
+                            <div class="ProfileTweet-action ProfileTweet-action--more js-more-ProfileTweet-actions">
+                                <div class="dropdown">
+                                    <button class="ProfileTweet-actionButton u-textUserColorHover dropdown-toggle
+                                        js-tooltip js-dropdown-toggle" type="button" title="More">
+                                        <span class="Icon Icon--dots">
+                                        </span>
+                                        <span class="u-hiddenVisually">More</span>
+                                    </button>
+                                    <div class="dropdown-menu">
+                                        <div class="dropdown-caret">
+                                            <div class="caret-outer">
+                                            </div>
+                                            <div class="caret-inner">
+                                            </div>
+                                        </div>
+                                        <ul>
+                                            <li class="share-via-dm js-actionShareViaDM" data-nav="share_tweet_dm">
+                                                <button type="button" class="dropdown-link">
+                                                    Share via Direct Message
+                                                </button>
+                                            </li>
+                                            <li class="embed-link js-actionEmbedTweet" data-nav="embed_tweet">
+                                                <button type="button" class="dropdown-link">
+                                                    Embed Tweet
+                                                </button>
+                                            </li>
+                                            <li class="mute-user-item pretty-link">
+                                                <button type="button" class="dropdown-link">
+                                                    Mute
+                                                </button>
+                                            </li>
+                                            <li class="unmute-user-item pretty-link">
+                                                <button type="button" class="dropdown-link">
+                                                    Unmute
+                                                </button>
+                                            </li>
+                                            <li class="block-or-report-link js-actionBlockOrReport"
+                                                data-nav="block_or_report">
+                                                <button type="button" class="dropdown-link">
+                                                    Block or report
+                                                </button>
+                                            </li>
+                                        </ul>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </li>
+        """
+        response = mock.Mock(text=html)
+        results = twitter.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], '@TitleName')
+        self.assertEqual(results[0]['url'], 'https://twitter.com/this.is.the.url')
+        self.assertIn(u'This is the content', results[0]['content'])
+        # self.assertIn(u'This is the content étude à€', results[0]['content'])
+
+        html = """
+        <li class="js-stream-item stream-item stream-item expanding-stream-item" data-item-id="563005573290287105"
+            id="stream-item-tweet-563005573290287105" data-item-type="tweet">
+            <div class="tweet original-tweet js-stream-tweet js-actionable-tweet js-profile-popup-actionable
+                js-original-tweet has-cards has-native-media" data-tweet-id="563005573290287105" data-disclosure-type=""
+                data-item-id="563005573290287105" data-screen-name="Jalopnik" data-name="Jalopnik"
+                data-user-id="3060631" data-has-native-media="true" data-has-cards="true" data-card-type="photo"
+                data-expanded-footer="&lt;div class=&quot;js-tweet-details-fixer
+                tweet-details-fixer&quot;&gt;&#10;&#10;&#10;
+                &lt;div class=&quot;cards-media-container js-media-container&quot;&gt;&lt;div
+                data-card-url=&quot;//twitter.com/Jalopnik/status/563005573290287105/photo/1&quot; data-card-type=&quot;
+                photo&quot; class=&quot;cards-base cards-multimedia&quot; data-element-context=&quot;platform_photo_card
+                &quot;&gt;&#10;&#10;&#10;  &lt;a class=&quot;media media-thumbnail twitter-timeline-link is-preview
+                &quot; data-url=&quot;https://pbs.twimg.com/media/B9Aylf5IMAAuziP.jpg:large&quot;
+                data-resolved-url-large=&quot;https://pbs.twimg.com/media/B9Aylf5IMAAuziP.jpg:large&quot;
+                href=&quot;//twitter.com/Jalopnik/status/563005573290287105/photo/1&quot;&gt;&#10;
+                &lt;div class=&quot;&quot;&gt;&#10; &lt;img src=&quot;
+                https://pbs.twimg.com/media/B9Aylf5IMAAuziP.jpg&quot;
+                alt=&quot;Embedded image permalink&quot; width=&quot;636&quot; height=&quot;309&quot;&gt;&#10;
+                &lt;/div&gt;&#10;&#10;  &lt;/a&gt;&#10;&#10;  &lt;div class=&quot;cards-content&quot;&gt;&#10;
+                &lt;div class=&quot;byline&quot;&gt;&#10;      &#10;    &lt;/div&gt;&#10;    &#10;  &lt;/div&gt;&#10;
+                &#10;&lt;/div&gt;&#10;&#10;&#10;&#10;&#10;&lt;/div&gt;&#10;&#10;&#10;&#10;  &lt;div
+                class=&quot;js-machine-translated-tweet-container&quot;&gt;&lt;/div&gt;&#10;    &lt;div
+                class=&quot;js-tweet-stats-container tweet-stats-container &quot;&gt;&#10;    &lt;/div&gt;&#10;&#10;
+                &lt;div class=&quot;client-and-actions&quot;&gt;&#10;  &lt;span class=&quot;metadata&quot;&gt;&#10;
+                &lt;span&gt;5:06 PM - 4 Feb 2015&lt;/span&gt;&#10;&#10;       &amp;middot; &lt;a
+                class=&quot;permalink-link js-permalink js-nav&quot; href=&quot;/Jalopnik/status/563005573290287105
+                &quot;tabindex=&quot;-1&quot;&gt;Details&lt;/a&gt;&#10;    &#10;&#10;        &#10;        &#10;
+                &#10;&#10;  &lt;/span&gt;&#10;&lt;/div&gt;&#10;&#10;&#10;&lt;/div&gt;&#10;" data-you-follow="false"
+                data-you-block="false">
+                <div class="context">
+                </div>
+                <div class="content">
+                    <div class="stream-item-header">
+                        <a class="account-group js-account-group js-action-profile js-user-profile-link js-nav"
+                            href="/Jalopnik" data-user-id="3060631">
+                            <img class="avatar js-action-profile-avatar"
+                                src="https://pbs.twimg.com/profile_images/2976430168/5cd4a59_bigger.jpeg" alt="">
+                            <strong class="fullname js-action-profile-name show-popup-with-id" data-aria-label-part>
+                                Jalopnik
+                            </strong>
+                            <span>&rlm;</span>
+                            <span class="username js-action-profile-name" data-aria-label-part>
+                            <s>@</s><b>TitleName</b>
+                            </span>
+                        </a>
+                        <small class="time">
+                        <a href="/this.is.the.url"
+                            class="tweet-timestamp js-permalink js-nav js-tooltip" title="5:06 PM - 4 Feb 2015" >
+                            <span class="_timestamp js-short-timestamp js-relative-timestamp"  data-time="1423065963"
+                                data-time-ms="1423065963000" data-long-form="true" aria-hidden="true">
+                                17m
+                            </span>
+                            <span class="u-hiddenVisually" data-aria-label-part="last">17 minutes ago</span>
+                        </a>
+                        </small>
+                    </div>
+                    <p class="js-tweet-text tweet-text" lang="en" data-aria-label-part="0">
+                        This is the content étude à€
+                        <a href="http://t.co/nRWsqQAwBL" rel="nofollow" dir="ltr"
+                            data-expanded-url="http://jalo.ps/ReMENu4" class="twitter-timeline-link"
+                            target="_blank" title="http://jalo.ps/ReMENu4" >
+                        <span class="tco-ellipsis">
+                        </span>
+                        <span class="invisible">http://</span><span class="js-display-url">link.in.tweet</span>
+                        <span class="invisible"></span>
+                        <span class="tco-ellipsis">
+                            <span class="invisible">&nbsp;</span>
+                        </span>
+                    </a>
+                    <a href="http://t.co/rbFsfeE0l3" class="twitter-timeline-link u-hidden"
+                        data-pre-embedded="true" dir="ltr">
+                        pic.twitter.com/rbFsfeE0l3
+                    </a>
+                    </p>
+                    <div class="expanded-content js-tweet-details-dropdown">
+                    </div>
+                    <div class="stream-item-footer">
+                        <a class="details with-icn js-details" href="/Jalopnik/status/563005573290287105">
+                            <span class="Icon Icon--photo">
+                            </span>
+                            <b>
+                                <span class="expand-stream-item js-view-details">
+                                    View photo
+                                </span>
+                                <span class="collapse-stream-item  js-hide-details">
+                                    Hide photo
+                                </span>
+                            </b>
+                        </a>
+                        <span class="ProfileTweet-action--reply u-hiddenVisually">
+                            <span class="ProfileTweet-actionCount" aria-hidden="true" data-tweet-stat-count="0">
+                                <span class="ProfileTweet-actionCountForAria" >0 replies</span>
+                            </span>
+                        </span>
+                        <span class="ProfileTweet-action--retweet u-hiddenVisually">
+                            <span class="ProfileTweet-actionCount"  data-tweet-stat-count="8">
+                                <span class="ProfileTweet-actionCountForAria" data-aria-label-part>8 retweets</span>
+                            </span>
+                        </span>
+                        <span class="ProfileTweet-action--favorite u-hiddenVisually">
+                            <span class="ProfileTweet-actionCount"  data-tweet-stat-count="14">
+                                <span class="ProfileTweet-actionCountForAria" data-aria-label-part>14 favorites</span>
+                            </span>
+                        </span>
+                        <div role="group" aria-label="Tweet actions" class="ProfileTweet-actionList u-cf js-actions">
+                            <div class="ProfileTweet-action ProfileTweet-action--reply">
+                                <button class="ProfileTweet-actionButton u-textUserColorHover js-actionButton
+                                    js-actionReply" data-modal="ProfileTweet-reply" type="button" title="Reply">
+                                    <span class="Icon Icon--reply">
+                                    </span>
+                                    <span class="u-hiddenVisually">Reply</span>
+                                    <span class="ProfileTweet-actionCount u-textUserColorHover
+                                        ProfileTweet-actionCount--isZero">
+                                        <span class="ProfileTweet-actionCountForPresentation" aria-hidden="true">
+                                        </span>
+                                    </span>
+                                </button>
+                            </div>
+                            <div class="ProfileTweet-action ProfileTweet-action--retweet js-toggleState js-toggleRt">
+                                <button class="ProfileTweet-actionButton  js-actionButton js-actionRetweet js-tooltip"
+                                    title="Retweet" data-modal="ProfileTweet-retweet" type="button">
+                                    <span class="Icon Icon--retweet">
+                                    </span>
+                                    <span class="u-hiddenVisually">Retweet</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">8</span>
+                                    </span>
+                                </button>
+                                <button class="ProfileTweet-actionButtonUndo js-actionButton js-actionRetweet"
+                                    data-modal="ProfileTweet-retweet" title="Undo retweet" type="button">
+                                    <span class="Icon Icon--retweet">
+                                    </span>
+                                    <span class="u-hiddenVisually">Retweeted</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">8</span>
+                                    </span>
+                                </button>
+                            </div>
+                            <div class="ProfileTweet-action ProfileTweet-action--favorite js-toggleState">
+                                <button class="ProfileTweet-actionButton js-actionButton js-actionFavorite js-tooltip"
+                                    title="Favorite" type="button">
+                                    <span class="Icon Icon--favorite">
+                                    </span>
+                                    <span class="u-hiddenVisually">Favorite</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">14</span>
+                                    </span>
+                                </button>
+                                <button class="ProfileTweet-actionButtonUndo u-linkClean js-actionButton
+                                    js-actionFavorite" title="Undo favorite" type="button">
+                                    <span class="Icon Icon--favorite">
+                                    </span>
+                                    <span class="u-hiddenVisually">Favorited</span>
+                                    <span class="ProfileTweet-actionCount">
+                                        <span class="ProfileTweet-actionCountForPresentation">
+                                            14
+                                        </span>
+                                    </span>
+                                </button>
+                            </div>
+                            <div class="ProfileTweet-action ProfileTweet-action--more js-more-ProfileTweet-actions">
+                                <div class="dropdown">
+                                    <button class="ProfileTweet-actionButton u-textUserColorHover dropdown-toggle
+                                        js-tooltip js-dropdown-toggle" type="button" title="More">
+                                        <span class="Icon Icon--dots">
+                                        </span>
+                                        <span class="u-hiddenVisually">More</span>
+                                    </button>
+                                    <div class="dropdown-menu">
+                                        <div class="dropdown-caret">
+                                            <div class="caret-outer">
+                                            </div>
+                                            <div class="caret-inner">
+                                            </div>
+                                        </div>
+                                        <ul>
+                                            <li class="share-via-dm js-actionShareViaDM" data-nav="share_tweet_dm">
+                                                <button type="button" class="dropdown-link">
+                                                    Share via Direct Message
+                                                </button>
+                                            </li>
+                                            <li class="embed-link js-actionEmbedTweet" data-nav="embed_tweet">
+                                                <button type="button" class="dropdown-link">
+                                                    Embed Tweet
+                                                </button>
+                                            </li>
+                                            <li class="mute-user-item pretty-link">
+                                                <button type="button" class="dropdown-link">
+                                                    Mute
+                                                </button>
+                                            </li>
+                                            <li class="unmute-user-item pretty-link">
+                                                <button type="button" class="dropdown-link">
+                                                    Unmute
+                                                </button>
+                                            </li>
+                                            <li class="block-or-report-link js-actionBlockOrReport"
+                                                data-nav="block_or_report">
+                                                <button type="button" class="dropdown-link">
+                                                    Block or report
+                                                </button>
+                                            </li>
+                                        </ul>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </li>
+        """
+        response = mock.Mock(text=html)
+        results = twitter.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], '@TitleName')
+        self.assertEqual(results[0]['url'], 'https://twitter.com/this.is.the.url')
+        self.assertIn(u'This is the content', results[0]['content'])
+
+        html = """
+        <li class="b_algo" u="0|5109|4755453613245655|UAGjXgIrPH5yh-o5oNHRx_3Zta87f_QO">
+            <div Class="sa_mc">
+                <div class="sb_tlst">
+                    <h2>
+                        <a href="http://this.should.be.the.link/" h="ID=SERP,5124.1">
+                        <strong>This</strong> should be the title</a>
+                    </h2>
+                </div>
+                <div class="sb_meta">
+                <cite>
+                <strong>this</strong>.meta.com</cite>
+                    <span class="c_tlbxTrg">
+                        <span class="c_tlbxH" H="BASE:CACHEDPAGEDEFAULT" K="SERP,5125.1">
+                        </span>
+                    </span>
+                </div>
+                <p>
+                <strong>This</strong> should be the content.</p>
+            </div>
+        </li>
+        """
+        response = mock.Mock(text=html)
+        results = twitter.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/engines/test_yacy.py b/searx/tests/engines/test_yacy.py
new file mode 100644
index 00000000..f49532cf
--- /dev/null
+++ b/searx/tests/engines/test_yacy.py
@@ -0,0 +1,96 @@
+from collections import defaultdict
+import mock
+from searx.engines import yacy
+from searx.testing import SearxTestCase
+
+
+class TestYacyEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = yacy.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('localhost', params['url'])
+        self.assertIn('fr', params['url'])
+
+        dicto['language'] = 'all'
+        params = yacy.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertNotIn('lr=lang_', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, yacy.response, None)
+        self.assertRaises(AttributeError, yacy.response, [])
+        self.assertRaises(AttributeError, yacy.response, '')
+        self.assertRaises(AttributeError, yacy.response, '[]')
+
+        response = mock.Mock(text='{}')
+        self.assertEqual(yacy.response(response), [])
+
+        response = mock.Mock(text='{"data": []}')
+        self.assertEqual(yacy.response(response), [])
+
+        json = """
+        {
+          "channels": [
+            {
+              "title": "YaCy P2P-Search for test",
+              "description": "Search for test",
+              "link": "http://search.yacy.de:7001/yacysearch.html?query=test&amp;resource=global&amp;contentdom=0",
+              "image": {
+                "url": "http://search.yacy.de:7001/env/grafics/yacy.png",
+                "title": "Search for test",
+                "link": "http://search.yacy.de:7001/yacysearch.html?query=test&amp;resource=global&amp;contentdom=0"
+              },
+              "totalResults": "249",
+              "startIndex": "0",
+              "itemsPerPage": "5",
+              "searchTerms": "test",
+              "items": [
+                {
+                  "title": "This is the title",
+                  "link": "http://this.is.the.url",
+                  "code": "",
+                  "description": "This should be the content",
+                  "pubDate": "Sat, 08 Jun 2013 02:00:00 +0200",
+                  "size": "44213",
+                  "sizename": "43 kbyte",
+                  "guid": "lzh_1T_5FP-A",
+                  "faviconCode": "XTS4uQ_5FP-A",
+                  "host": "www.gamestar.de",
+                  "path": "/spiele/city-of-heroes-freedom/47019.html",
+                  "file": "47019.html",
+                  "urlhash": "lzh_1T_5FP-A",
+                  "ranking": "0.20106804"
+                },
+                {
+                  "title": "This is the title2",
+                  "icon": "/ViewImage.png?maxwidth=96&amp;maxheight=96&amp;code=7EbAbW6BpPOA",
+                  "image": "http://image.url/image.png",
+                  "cache": "/ViewImage.png?quadratic=&amp;url=http://golem.ivwbox.de/cgi-bin/ivw/CP/G_INET?d=14071378",
+                  "url": "http://this.is.the.url",
+                  "urlhash": "7EbAbW6BpPOA",
+                  "host": "www.golem.de",
+                  "width": "-1",
+                  "height": "-1"
+                }
+              ]
+            }
+          ]
+        }
+        """
+        response = mock.Mock(text=json)
+        results = yacy.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 2)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url')
+        self.assertEqual(results[0]['content'], 'This should be the content')
+        self.assertEqual(results[1]['img_src'], 'http://image.url/image.png')
+        self.assertEqual(results[1]['content'], '')
+        self.assertEqual(results[1]['url'], 'http://this.is.the.url')
+        self.assertEqual(results[1]['title'], 'This is the title2')
diff --git a/searx/tests/engines/test_yahoo.py b/searx/tests/engines/test_yahoo.py
new file mode 100644
index 00000000..e5c78701
--- /dev/null
+++ b/searx/tests/engines/test_yahoo.py
@@ -0,0 +1,154 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+import mock
+from searx.engines import yahoo
+from searx.testing import SearxTestCase
+
+
+class TestYahooEngine(SearxTestCase):
+
+    def test_parse_url(self):
+        test_url = 'http://r.search.yahoo.com/_ylt=A0LEb9JUSKcAEGRXNyoA;_ylu=X3oDMTEzZm1qazYwBHNlYwNzcgRwb3MDMQRjb' +\
+                   '2xvA2Jm2dGlkA1NNRTcwM18x/RV=2/RE=1423106085/RO=10/RU=https%3a%2f%2fthis.is.the.url%2f/RK=0/RS=' +\
+                   'dtcJsfP4mEeBOjnVfUQ-'
+        url = yahoo.parse_url(test_url)
+        self.assertEqual('https://this.is.the.url/', url)
+
+        test_url = 'http://r.search.yahoo.com/_ylt=A0LElb9JUSKcAEGRXNyoA;_ylu=X3oDMTEzZm1qazYwBHNlYwNzcgRwb3MDMQRjb' +\
+                   '2xvA2Jm2dGlkA1NNRTcwM18x/RV=2/RE=1423106085/RO=10/RU=https%3a%2f%2fthis.is.the.url%2f/RS=' +\
+                   'dtcJsfP4mEeBOjnVfUQ-'
+        url = yahoo.parse_url(test_url)
+        self.assertEqual('https://this.is.the.url/', url)
+
+        test_url = 'https://this.is.the.url/'
+        url = yahoo.parse_url(test_url)
+        self.assertEqual('https://this.is.the.url/', url)
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = yahoo.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('search.yahoo.com', params['url'])
+        self.assertIn('fr', params['url'])
+        self.assertIn('cookies', params)
+        self.assertIn('sB', params['cookies'])
+        self.assertIn('fr', params['cookies']['sB'])
+
+        dicto['language'] = 'all'
+        params = yahoo.request(query, dicto)
+        self.assertIn('cookies', params)
+        self.assertIn('sB', params['cookies'])
+        self.assertIn('en', params['cookies']['sB'])
+        self.assertIn('en', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, yahoo.response, None)
+        self.assertRaises(AttributeError, yahoo.response, [])
+        self.assertRaises(AttributeError, yahoo.response, '')
+        self.assertRaises(AttributeError, yahoo.response, '[]')
+
+        response = mock.Mock(text='<html></html>')
+        self.assertEqual(yahoo.response(response), [])
+
+        html = """
+        <div class="res">
+            <div>
+                <h3>
+                <a id="link-1" class="yschttl spt" href="http://r.search.yahoo.com/_ylt=A0LEVzClb9JUSKcAEGRXNyoA;
+                    _ylu=X3oDMTEzZm1qazYwBHNlYwNzcgRwb3MDMQRjb2xvA2JmMQR2dGlkA1NNRTcwM18x/RV=2/RE=1423106085/RO=10
+                    /RU=https%3a%2f%2fthis.is.the.url%2f/RK=0/RS=dtcJsfP4mEeBOjnVfUQ-"target="_blank" data-bk="5063.1">
+                    <b>This</b> is the title
+                </a>
+                </h3>
+            </div>
+            <span class="url" dir="ltr">www.<b>test</b>.com</span>
+            <div class="abstr">
+                <b>This</b> is the content
+            </div>
+        </div>
+        <div id="satat"  data-bns="Yahoo" data-bk="124.1">
+            <h2>Also Try</h2>
+            <table>
+                <tbody>
+                    <tr>
+                        <td>
+                            <a id="srpnat0" class="" href="https://search.yahoo.com/search=rs-bottom" >
+                                <span>
+                                    <b></b>This is <b>the suggestion</b>
+                                </span>
+                            </a>
+                        </td>
+                    </tr>
+                </tbody>
+            </table>
+        </div>
+        """
+        response = mock.Mock(text=html)
+        results = yahoo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 2)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'https://this.is.the.url/')
+        self.assertEqual(results[0]['content'], 'This is the content')
+        self.assertEqual(results[1]['suggestion'], 'This is the suggestion')
+
+        html = """
+        <div class="res">
+            <div>
+                <h3>
+                <a id="link-1" class="yschttl spt" href="http://r.search.yahoo.com/_ylt=A0LEVzClb9JUSKcAEGRXNyoA;
+                    _ylu=X3oDMTEzZm1qazYwBHNlYwNzcgRwb3MDMQRjb2xvA2JmMQR2dGlkA1NNRTcwM18x/RV=2/RE=1423106085/RO=10
+                    /RU=https%3a%2f%2fthis.is.the.url%2f/RK=0/RS=dtcJsfP4mEeBOjnVfUQ-"target="_blank" data-bk="5063.1">
+                    <b>This</b> is the title
+                </a>
+                </h3>
+            </div>
+            <span class="url" dir="ltr">www.<b>test</b>.com</span>
+            <div class="abstr">
+                <b>This</b> is the content
+            </div>
+        </div>
+        <div class="res">
+            <div>
+                <h3>
+                <a id="link-1" class="yschttl spt">
+                    <b>This</b> is the title
+                </a>
+                </h3>
+            </div>
+            <span class="url" dir="ltr">www.<b>test</b>.com</span>
+            <div class="abstr">
+                <b>This</b> is the content
+            </div>
+        </div>
+        <div class="res">
+            <div>
+                <h3>
+                </h3>
+            </div>
+            <span class="url" dir="ltr">www.<b>test</b>.com</span>
+            <div class="abstr">
+                <b>This</b> is the content
+            </div>
+        </div>
+        """
+        response = mock.Mock(text=html)
+        results = yahoo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the title')
+        self.assertEqual(results[0]['url'], 'https://this.is.the.url/')
+        self.assertEqual(results[0]['content'], 'This is the content')
+
+        html = """
+        <li class="b_algo" u="0|5109|4755453613245655|UAGjXgIrPH5yh-o5oNHRx_3Zta87f_QO">
+        </li>
+        """
+        response = mock.Mock(text=html)
+        results = yahoo.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/engines/test_yahoo_news.py b/searx/tests/engines/test_yahoo_news.py
new file mode 100644
index 00000000..797dc11b
--- /dev/null
+++ b/searx/tests/engines/test_yahoo_news.py
@@ -0,0 +1,143 @@
+# -*- coding: utf-8 -*-
+from collections import defaultdict
+from datetime import datetime
+import mock
+from searx.engines import yahoo_news
+from searx.testing import SearxTestCase
+
+
+class TestYahooNewsEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dicto = defaultdict(dict)
+        dicto['pageno'] = 1
+        dicto['language'] = 'fr_FR'
+        params = yahoo_news.request(query, dicto)
+        self.assertIn('url', params)
+        self.assertIn(query, params['url'])
+        self.assertIn('news.search.yahoo.com', params['url'])
+        self.assertIn('fr', params['url'])
+        self.assertIn('cookies', params)
+        self.assertIn('sB', params['cookies'])
+        self.assertIn('fr', params['cookies']['sB'])
+
+        dicto['language'] = 'all'
+        params = yahoo_news.request(query, dicto)
+        self.assertIn('cookies', params)
+        self.assertIn('sB', params['cookies'])
+        self.assertIn('en', params['cookies']['sB'])
+        self.assertIn('en', params['url'])
+
+    def test_response(self):
+        self.assertRaises(AttributeError, yahoo_news.response, None)
+        self.assertRaises(AttributeError, yahoo_news.response, [])
+        self.assertRaises(AttributeError, yahoo_news.response, '')
+        self.assertRaises(AttributeError, yahoo_news.response, '[]')
+
+        response = mock.Mock(text='<html></html>')
+        self.assertEqual(yahoo_news.response(response), [])
+
+        html = """
+        <div class="res">
+            <div>
+                <h3>
+                    <a class="yschttl spt" href="http://this.is.the.url" target="_blank">
+                        This is
+                        the <b>title</b>...
+                    </a>
+                </h3>
+            </div>
+            <span class="url">Business via Yahoo! Finance</span> &nbsp; <span class="timestamp">Feb 03 09:45am</span>
+            <div class="abstr">
+                This is the content
+            </div>
+        </div>
+        """
+        response = mock.Mock(text=html)
+        results = yahoo_news.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 1)
+        self.assertEqual(results[0]['title'], 'This is the title...')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/')
+        self.assertEqual(results[0]['content'], 'This is the content')
+
+        html = """
+        <div class="res">
+            <div>
+                <h3>
+                    <a class="yschttl spt" href="http://this.is.the.url" target="_blank">
+                        This is
+                        the <b>title</b>...
+                    </a>
+                </h3>
+            </div>
+            <span class="url">Business via Yahoo!</span> &nbsp; <span class="timestamp">2 hours, 22 minutes ago</span>
+            <div class="abstr">
+                This is the content
+            </div>
+        </div>
+        <div class="res">
+            <div>
+                <h3>
+                    <a class="yschttl spt" href="http://this.is.the.url" target="_blank">
+                        This is
+                        the <b>title</b>...
+                    </a>
+                </h3>
+            </div>
+            <span class="url">Business via Yahoo!</span> &nbsp; <span class="timestamp">22 minutes ago</span>
+            <div class="abstr">
+                This is the content
+            </div>
+        </div>
+        <div class="res">
+            <div>
+                <h3>
+                    <a class="yschttl spt" href="http://this.is.the.url" target="_blank">
+                        This is
+                        the <b>title</b>...
+                    </a>
+                </h3>
+            </div>
+            <span class="url">Business via Yahoo!</span> &nbsp; <span class="timestamp">Feb 03 09:45am 1900</span>
+            <div class="abstr">
+                This is the content
+            </div>
+        </div>
+        """
+        response = mock.Mock(text=html)
+        results = yahoo_news.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 3)
+        self.assertEqual(results[0]['title'], 'This is the title...')
+        self.assertEqual(results[0]['url'], 'http://this.is.the.url/')
+        self.assertEqual(results[0]['content'], 'This is the content')
+        self.assertEqual(results[2]['publishedDate'].year, datetime.now().year)
+
+        html = """
+        <li class="b_algo" u="0|5109|4755453613245655|UAGjXgIrPH5yh-o5oNHRx_3Zta87f_QO">
+            <div Class="sa_mc">
+                <div class="sb_tlst">
+                    <h2>
+                        <a href="http://this.should.be.the.link/" h="ID=SERP,5124.1">
+                        <strong>This</strong> should be the title</a>
+                    </h2>
+                </div>
+                <div class="sb_meta">
+                <cite>
+                <strong>this</strong>.meta.com</cite>
+                    <span class="c_tlbxTrg">
+                        <span class="c_tlbxH" H="BASE:CACHEDPAGEDEFAULT" K="SERP,5125.1">
+                        </span>
+                    </span>
+                </div>
+                <p>
+                <strong>This</strong> should be the content.</p>
+            </div>
+        </li>
+        """
+        response = mock.Mock(text=html)
+        results = yahoo_news.response(response)
+        self.assertEqual(type(results), list)
+        self.assertEqual(len(results), 0)
diff --git a/searx/tests/test_engines.py b/searx/tests/test_engines.py
index 651da6dc..9b1c12cb 100644
--- a/searx/tests/test_engines.py
+++ b/searx/tests/test_engines.py
@@ -3,25 +3,39 @@ from searx.tests.engines.test_bing_images import *  # noqa
 from searx.tests.engines.test_bing_news import *  # noqa
 from searx.tests.engines.test_blekko_images import *  # noqa
 from searx.tests.engines.test_btdigg import *  # noqa
+from searx.tests.engines.test_currency_convert import *  # noqa
 from searx.tests.engines.test_dailymotion import *  # noqa
 from searx.tests.engines.test_deezer import *  # noqa
 from searx.tests.engines.test_deviantart import *  # noqa
 from searx.tests.engines.test_digg import *  # noqa
+from searx.tests.engines.test_duckduckgo import *  # noqa
+from searx.tests.engines.test_duckduckgo_definitions import *  # noqa
 from searx.tests.engines.test_dummy import *  # noqa
+from searx.tests.engines.test_faroo import *  # noqa
 from searx.tests.engines.test_flickr import *  # noqa
 from searx.tests.engines.test_flickr_noapi import *  # noqa
 from searx.tests.engines.test_gigablast import *  # noqa
 from searx.tests.engines.test_github import *  # noqa
-from searx.tests.engines.test_www1x import *  # noqa
+from searx.tests.engines.test_google import *  # noqa
 from searx.tests.engines.test_google_images import *  # noqa
 from searx.tests.engines.test_google_news import *  # noqa
 from searx.tests.engines.test_kickass import *  # noqa
+from searx.tests.engines.test_mediawiki import *  # noqa
 from searx.tests.engines.test_mixcloud import *  # noqa
+from searx.tests.engines.test_openstreetmap import *  # noqa
+from searx.tests.engines.test_photon import *  # noqa
 from searx.tests.engines.test_piratebay import *  # noqa
 from searx.tests.engines.test_searchcode_code import *  # noqa
 from searx.tests.engines.test_searchcode_doc import *  # noqa
 from searx.tests.engines.test_soundcloud import *  # noqa
 from searx.tests.engines.test_stackoverflow import *  # noqa
+from searx.tests.engines.test_startpage import *  # noqa
+from searx.tests.engines.test_subtitleseeker import *  # noqa
+from searx.tests.engines.test_twitter import *  # noqa
 from searx.tests.engines.test_vimeo import *  # noqa
+from searx.tests.engines.test_www1x import *  # noqa
 from searx.tests.engines.test_www500px import *  # noqa
+from searx.tests.engines.test_yacy import *  # noqa
+from searx.tests.engines.test_yahoo import *  # noqa
 from searx.tests.engines.test_youtube import *  # noqa
+from searx.tests.engines.test_yahoo_news import *  # noqa