add channel extractor tests

app/src/androidTest/java/org/schabi/newpipe/extractor/youtube/YoutubeChannelExtractorTest.java

@@ -0,0 +1,80 @@
+package org.schabi.newpipe.extractor.youtube;
+
+import android.test.AndroidTestCase;
+
+import org.schabi.newpipe.Downloader;
+import org.schabi.newpipe.extractor.ChannelExtractor;
+import org.schabi.newpipe.extractor.SearchEngine;
+import org.schabi.newpipe.extractor.ServiceList;
+
+/**
+ * Created by Christian Schabesberger on 12.09.16.
+ *
+ * Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
+ * YoutubeSearchEngineTest.java is part of NewPipe.
+ *
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+public class YoutubeChannelExtractorTest extends AndroidTestCase  {
+
+    ChannelExtractor extractor;
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+        extractor = ServiceList.getService("Youtube")
+                .getChannelExtractorInstance("https://www.youtube.com/channel/UCYJ61XIK64sp6ZFFS8sctxw", 0, new Downloader());
+    }
+
+    public void testGetChannelName() throws Exception {
+        assertEquals(extractor.getChannelName(), "Gronkh");
+    }
+
+    public void testGetAvatarUrl() throws Exception {
+        assertTrue(extractor.getAvatarUrl(), extractor.getAvatarUrl().contains("yt3"));
+    }
+
+    public void testGetBannerurl() throws Exception {
+        assertTrue(extractor.getBannerUrl(), extractor.getBannerUrl().contains("yt3"));
+    }
+
+    public void testGetFeedUrl() throws Exception {
+        assertTrue(extractor.getFeedUrl(), extractor.getFeedUrl().contains("feed"));
+    }
+
+    public void testGetStreams() throws Exception {
+        assertTrue("no streams are received", !extractor.getStreams().getItemList().isEmpty());
+    }
+
+    public void testGetStreamsErrors() throws Exception {
+        assertTrue("errors during stream list extraction", extractor.getStreams().getErrors().isEmpty());
+    }
+
+    public void testHasNextPage() throws Exception {
+        // this particular example (link) has a next page !!!
+        assertTrue("no next page link found", extractor.hasNextPage());
+    }
+
+    public void testGetNextPage() throws Exception {
+        extractor = ServiceList.getService("Youtube")
+                .getChannelExtractorInstance("https://www.youtube.com/channel/UCYJ61XIK64sp6ZFFS8sctxw", 1, new Downloader());
+        assertTrue("next page didn't have content", !extractor.getStreams().getItemList().isEmpty());
+    }
+
+    public void testGetNextNextPageUrl() throws Exception {
+        extractor = ServiceList.getService("Youtube")
+                .getChannelExtractorInstance("https://www.youtube.com/channel/UCYJ61XIK64sp6ZFFS8sctxw", 2, new Downloader());
+        assertTrue("next page didn't have content", extractor.hasNextPage());
+    }
+}

app/src/androidTest/java/org/schabi/newpipe/extractor/youtube/YoutubeStreamExtractorLiveStreamTest.java

@@ -15,7 +15,7 @@ import java.io.IOException;
  * Created by Christian Schabesberger on 11.03.16.
  *
  * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * YoutubestreamExtractorLiveStreamTest.java is part of NewPipe.
+ * YoutubeStreamExtractorLiveStreamTest.java is part of NewPipe.
  *
  * NewPipe is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -32,7 +32,7 @@ import java.io.IOException;
  */
 
 
-public class YoutubestreamExtractorLiveStreamTest extends AndroidTestCase {
+public class YoutubeStreamExtractorLiveStreamTest extends AndroidTestCase {
 
     private StreamExtractor extractor;
 

app/src/main/java/org/schabi/newpipe/extractor/ChannelExtractor.java

@@ -28,9 +28,13 @@ public abstract class ChannelExtractor {
     private UrlIdHandler urlIdHandler;
     private Downloader downloader;
     private StreamPreviewInfoCollector previewInfoCollector;
+    private int page = -1;
 
     public ChannelExtractor(UrlIdHandler urlIdHandler, String url, int page, Downloader dl, int serviceId)
             throws ExtractionException, IOException {
+        this.url = url;
+        this.page = page;
+        this.downloader = dl;
         this.serviceId = serviceId;
         this.urlIdHandler = urlIdHandler;
         previewInfoCollector = new StreamPreviewInfoCollector(urlIdHandler, serviceId);