diff --git a/.credo.exs b/.credo.exs
index 94e19c4b5..580cb2705 100644
--- a/.credo.exs
+++ b/.credo.exs
@@ -19,7 +19,7 @@
         #
         # You can give explicit globs or simply directories.
         # In the latter case `**/*.{ex,exs}` will be used.
-        included: ["lib/", "src/", "web/", "apps/"],
+        included: ["lib/", "src/", "web/", "apps/", "test/"],
         excluded: [~r"/_build/", ~r"/deps/"]
       },
       #
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b59445895..6deb0a1de 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,8 @@
 image: elixir:1.7.2
 
 services:
-  - postgres:9.6.2
+  - name: postgres:9.6.2
+    command: ["postgres", "-c", "fsync=off", "-c", "synchronous_commit=off", "-c", "full_page_writes=off"]
 
 variables:
   POSTGRES_DB: pleroma_test
@@ -35,4 +36,4 @@ lint:
 unit-testing:
   stage: test
   script:
-    - mix test --trace
+    - mix test --trace --preload-modules
diff --git a/config/config.exs b/config/config.exs
index 5db0ea9aa..271224e85 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -162,7 +162,9 @@ config :pleroma, :instance,
   mrf_transparency: true,
   autofollowed_nicknames: [],
   max_pinned_statuses: 1,
-  no_attachment_links: false
+  no_attachment_links: false,
+  welcome_user_nickname: nil,
+  welcome_message: nil
 
 config :pleroma, :markup,
   # XXX - unfortunately, inline images must be enabled by default right now, because
@@ -228,8 +230,8 @@ config :pleroma, :mrf_rejectnonpublic,
   allow_direct: false
 
 config :pleroma, :mrf_hellthread,
-  delist_threshold: 5,
-  reject_threshold: 10
+  delist_threshold: 10,
+  reject_threshold: 20
 
 config :pleroma, :mrf_simple,
   media_removal: [],
diff --git a/docs/Differences-in-MastodonAPI-Responses.md b/docs/Differences-in-MastodonAPI-Responses.md
new file mode 100644
index 000000000..f6a5b6461
--- /dev/null
+++ b/docs/Differences-in-MastodonAPI-Responses.md
@@ -0,0 +1,11 @@
+# Differences in Mastodon API responses from vanilla Mastodon
+
+A Pleroma instance can be identified by "<Mastodon version> (compatible; Pleroma <version>)" present in `version` field in response from `/api/v1/instance` 
+
+## Flake IDs
+
+Pleroma uses 128-bit ids as opposed to Mastodon's 64 bits. However just like Mastodon's ids they are sortable strings
+
+## Attachment cap
+
+Some apps operate under the assumption that no more than 4 attachments can be returned or uploaded. Pleroma however does not enforce any limits on attachment count neither when returning the status object nor when posting.
diff --git a/docs/config.md b/docs/config.md
index 74badd0da..0c1051dee 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -97,6 +97,8 @@ config :pleroma, Pleroma.Mailer,
 * `max_pinned_statuses`: The maximum number of pinned statuses. `0` will disable the feature.
 * `autofollowed_nicknames`: Set to nicknames of (local) users that every new user should automatically follow.
 * `no_attachment_links`: Set to true to disable automatically adding attachment link text to statuses
+* `welcome_message`: A message that will be send to a newly registered users as a direct message.
+* `welcome_user_nickname`: The nickname of the local user that sends the welcome message.
 
 ## :logger
 * `backends`: `:console` is used to send logs to stdout, `{ExSyslogger, :ex_syslogger}` to log to syslog
diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index 3232cb842..3c6a9953d 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -261,6 +261,7 @@ defmodule Pleroma.User do
   def register(%Ecto.Changeset{} = changeset) do
     with {:ok, user} <- Repo.insert(changeset),
          {:ok, user} <- autofollow_users(user),
+         {:ok, _} <- Pleroma.User.WelcomeMessage.post_welcome_message_to_user(user),
          {:ok, _} <- try_send_confirmation_email(user) do
       {:ok, user}
     end
@@ -731,7 +732,7 @@ defmodule Pleroma.User do
     # Strip the beginning @ off if there is a query
     query = String.trim_leading(query, "@")
 
-    if resolve, do: User.get_or_fetch_by_nickname(query)
+    if resolve, do: get_or_fetch(query)
 
     fts_results = do_search(fts_search_subquery(query), for_user)
 
diff --git a/lib/pleroma/user/welcome_message.ex b/lib/pleroma/user/welcome_message.ex
new file mode 100644
index 000000000..8018ac22f
--- /dev/null
+++ b/lib/pleroma/user/welcome_message.ex
@@ -0,0 +1,30 @@
+defmodule Pleroma.User.WelcomeMessage do
+  alias Pleroma.User
+  alias Pleroma.Web.CommonAPI
+
+  def post_welcome_message_to_user(user) do
+    with %User{} = sender_user <- welcome_user(),
+         message when is_binary(message) <- welcome_message() do
+      CommonAPI.post(sender_user, %{
+        "visibility" => "direct",
+        "status" => "@#{user.nickname}\n#{message}"
+      })
+    else
+      _ -> {:ok, nil}
+    end
+  end
+
+  defp welcome_user() do
+    with nickname when is_binary(nickname) <-
+           Pleroma.Config.get([:instance, :welcome_user_nickname]),
+         %User{local: true} = user <- User.get_cached_by_nickname(nickname) do
+      user
+    else
+      _ -> nil
+    end
+  end
+
+  defp welcome_message() do
+    Pleroma.Config.get([:instance, :welcome_message])
+  end
+end
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index c46d8233e..ab2872f56 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -818,8 +818,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     if object = Object.get_cached_by_ap_id(id) do
       {:ok, object}
     else
-      Logger.info("Fetching #{id} via AP")
-
       with {:ok, data} <- fetch_and_contain_remote_object_from_id(id),
            nil <- Object.normalize(data),
            params <- %{
@@ -851,7 +849,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   def fetch_and_contain_remote_object_from_id(id) do
-    Logger.info("Fetching #{id} via AP")
+    Logger.info("Fetching object #{id} via AP")
 
     with true <- String.starts_with?(id, "http"),
          {:ok, %{body: body, status: code}} when code in 200..299 <-
diff --git a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
index 4c6e612b2..6736f3cb9 100644
--- a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
@@ -6,40 +6,80 @@ defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
   alias Pleroma.User
   @behaviour Pleroma.Web.ActivityPub.MRF
 
-  defp delist_message(message) do
+  defp delist_message(message, threshold) when threshold > 0 do
     follower_collection = User.get_cached_by_ap_id(message["actor"]).follower_address
 
-    message
-    |> Map.put("to", [follower_collection])
-    |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+    follower_collection? = Enum.member?(message["to"] ++ message["cc"], follower_collection)
+
+    message =
+      case get_recipient_count(message) do
+        {:public, recipients}
+        when follower_collection? and recipients > threshold ->
+          message
+          |> Map.put("to", [follower_collection])
+          |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+
+        {:public, recipients} when recipients > threshold ->
+          message
+          |> Map.put("to", [])
+          |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+
+        _ ->
+          message
+      end
+
+    {:ok, message}
+  end
+
+  defp delist_message(message, _threshold), do: {:ok, message}
+
+  defp reject_message(message, threshold) when threshold > 0 do
+    with {_, recipients} <- get_recipient_count(message) do
+      if recipients > threshold do
+        {:reject, nil}
+      else
+        {:ok, message}
+      end
+    end
+  end
+
+  defp reject_message(message, _threshold), do: {:ok, message}
+
+  defp get_recipient_count(message) do
+    recipients = (message["to"] || []) ++ (message["cc"] || [])
+    follower_collection = User.get_cached_by_ap_id(message["actor"]).follower_address
+
+    if Enum.member?(recipients, "https://www.w3.org/ns/activitystreams#Public") do
+      recipients =
+        recipients
+        |> List.delete("https://www.w3.org/ns/activitystreams#Public")
+        |> List.delete(follower_collection)
+
+      {:public, length(recipients)}
+    else
+      recipients =
+        recipients
+        |> List.delete(follower_collection)
+
+      {:not_public, length(recipients)}
+    end
   end
 
   @impl true
   def filter(%{"type" => "Create"} = message) do
-    delist_threshold = Pleroma.Config.get([:mrf_hellthread, :delist_threshold])
-
     reject_threshold =
       Pleroma.Config.get(
         [:mrf_hellthread, :reject_threshold],
         Pleroma.Config.get([:mrf_hellthread, :threshold])
       )
 
-    recipients = (message["to"] || []) ++ (message["cc"] || [])
+    delist_threshold = Pleroma.Config.get([:mrf_hellthread, :delist_threshold])
 
-    cond do
-      length(recipients) > reject_threshold and reject_threshold > 0 ->
-        {:reject, nil}
-
-      length(recipients) > delist_threshold and delist_threshold > 0 ->
-        if Enum.member?(message["to"], "https://www.w3.org/ns/activitystreams#Public") or
-             Enum.member?(message["cc"], "https://www.w3.org/ns/activitystreams#Public") do
-          {:ok, delist_message(message)}
-        else
-          {:ok, message}
-        end
-
-      true ->
-        {:ok, message}
+    with {:ok, message} <- reject_message(message, reject_threshold),
+         {:ok, message} <- delist_message(message, delist_threshold) do
+      {:ok, message}
+    else
+      _e -> {:reject, nil}
     end
   end
 
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index c21dd4a18..02e09e472 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -653,7 +653,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     if object = Object.normalize(id), do: {:ok, object}, else: nil
   end
 
-  def set_reply_to_uri(%{"inReplyTo" => inReplyTo} = object) do
+  def set_reply_to_uri(%{"inReplyTo" => inReplyTo} = object) when is_binary(inReplyTo) do
     with false <- String.starts_with?(inReplyTo, "http"),
          {:ok, %{data: replied_to_object}} <- get_obj_helper(inReplyTo) do
       Map.put(object, "inReplyTo", replied_to_object["external_url"] || inReplyTo)
@@ -769,12 +769,18 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   def add_hashtags(object) do
     tags =
       (object["tag"] || [])
-      |> Enum.map(fn tag ->
-        %{
-          "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
-          "name" => "##{tag}",
-          "type" => "Hashtag"
-        }
+      |> Enum.map(fn
+        # Expand internal representation tags into AS2 tags.
+        tag when is_binary(tag) ->
+          %{
+            "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
+            "name" => "##{tag}",
+            "type" => "Hashtag"
+          }
+
+        # Do not process tags which are already AS2 tag objects.
+        tag when is_map(tag) ->
+          tag
       end)
 
     object
diff --git a/lib/pleroma/web/activity_pub/views/user_view.ex b/lib/pleroma/web/activity_pub/views/user_view.ex
index 15e6c1f68..c8e154989 100644
--- a/lib/pleroma/web/activity_pub/views/user_view.ex
+++ b/lib/pleroma/web/activity_pub/views/user_view.ex
@@ -12,9 +12,26 @@ defmodule Pleroma.Web.ActivityPub.UserView do
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.ActivityPub.Utils
+  alias Pleroma.Web.Router.Helpers
+  alias Pleroma.Web.Endpoint
 
   import Ecto.Query
 
+  def render("endpoints.json", %{user: %User{nickname: nil, local: true} = _user}) do
+    %{"sharedInbox" => Helpers.activity_pub_url(Endpoint, :inbox)}
+  end
+
+  def render("endpoints.json", %{user: %User{local: true} = _user}) do
+    %{
+      "oauthAuthorizationEndpoint" => Helpers.o_auth_url(Endpoint, :authorize),
+      "oauthRegistrationEndpoint" => Helpers.mastodon_api_url(Endpoint, :create_app),
+      "oauthTokenEndpoint" => Helpers.o_auth_url(Endpoint, :token_exchange),
+      "sharedInbox" => Helpers.activity_pub_url(Endpoint, :inbox)
+    }
+  end
+
+  def render("endpoints.json", _), do: %{}
+
   # the instance itself is not a Person, but instead an Application
   def render("user.json", %{user: %{nickname: nil} = user}) do
     {:ok, user} = WebFinger.ensure_keys_present(user)
@@ -22,6 +39,8 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
     public_key = :public_key.pem_encode([public_key])
 
+    endpoints = render("endpoints.json", %{user: user})
+
     %{
       "id" => user.ap_id,
       "type" => "Application",
@@ -37,9 +56,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
         "owner" => user.ap_id,
         "publicKeyPem" => public_key
       },
-      "endpoints" => %{
-        "sharedInbox" => "#{Pleroma.Web.Endpoint.url()}/inbox"
-      }
+      "endpoints" => endpoints
     }
     |> Map.merge(Utils.make_json_ld_header())
   end
@@ -50,6 +67,8 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
     public_key = :public_key.pem_encode([public_key])
 
+    endpoints = render("endpoints.json", %{user: user})
+
     %{
       "id" => user.ap_id,
       "type" => "Person",
@@ -67,9 +86,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
         "owner" => user.ap_id,
         "publicKeyPem" => public_key
       },
-      "endpoints" => %{
-        "sharedInbox" => "#{Pleroma.Web.Endpoint.url()}/inbox"
-      },
+      "endpoints" => endpoints,
       "icon" => %{
         "type" => "Image",
         "url" => User.avatar_url(user)
@@ -88,7 +105,14 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     query = from(user in query, select: [:ap_id])
     following = Repo.all(query)
 
-    collection(following, "#{user.ap_id}/following", page, !user.info.hide_follows)
+    total =
+      if !user.info.hide_follows do
+        length(following)
+      else
+        0
+      end
+
+    collection(following, "#{user.ap_id}/following", page, !user.info.hide_follows, total)
     |> Map.merge(Utils.make_json_ld_header())
   end
 
@@ -97,10 +121,17 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     query = from(user in query, select: [:ap_id])
     following = Repo.all(query)
 
+    total =
+      if !user.info.hide_follows do
+        length(following)
+      else
+        0
+      end
+
     %{
       "id" => "#{user.ap_id}/following",
       "type" => "OrderedCollection",
-      "totalItems" => length(following),
+      "totalItems" => total,
       "first" => collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
     }
     |> Map.merge(Utils.make_json_ld_header())
@@ -111,7 +142,14 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     query = from(user in query, select: [:ap_id])
     followers = Repo.all(query)
 
-    collection(followers, "#{user.ap_id}/followers", page, !user.info.hide_followers)
+    total =
+      if !user.info.hide_followers do
+        length(followers)
+      else
+        0
+      end
+
+    collection(followers, "#{user.ap_id}/followers", page, !user.info.hide_followers, total)
     |> Map.merge(Utils.make_json_ld_header())
   end
 
@@ -120,19 +158,24 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     query = from(user in query, select: [:ap_id])
     followers = Repo.all(query)
 
+    total =
+      if !user.info.hide_followers do
+        length(followers)
+      else
+        0
+      end
+
     %{
       "id" => "#{user.ap_id}/followers",
       "type" => "OrderedCollection",
-      "totalItems" => length(followers),
-      "first" => collection(followers, "#{user.ap_id}/followers", 1, !user.info.hide_followers)
+      "totalItems" => total,
+      "first" =>
+        collection(followers, "#{user.ap_id}/followers", 1, !user.info.hide_followers, total)
     }
     |> Map.merge(Utils.make_json_ld_header())
   end
 
   def render("outbox.json", %{user: user, max_id: max_qid}) do
-    # XXX: technically note_count is wrong for this, but it's better than nothing
-    info = User.user_info(user)
-
     params = %{
       "limit" => "10"
     }
@@ -160,7 +203,6 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       "id" => "#{iri}?max_id=#{max_id}",
       "type" => "OrderedCollectionPage",
       "partOf" => iri,
-      "totalItems" => info.note_count,
       "orderedItems" => collection,
       "next" => "#{iri}?max_id=#{min_id}"
     }
@@ -169,7 +211,6 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       %{
         "id" => iri,
         "type" => "OrderedCollection",
-        "totalItems" => info.note_count,
         "first" => page
       }
       |> Map.merge(Utils.make_json_ld_header())
@@ -207,7 +248,6 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       "id" => "#{iri}?max_id=#{max_id}",
       "type" => "OrderedCollectionPage",
       "partOf" => iri,
-      "totalItems" => -1,
       "orderedItems" => collection,
       "next" => "#{iri}?max_id=#{min_id}"
     }
@@ -216,7 +256,6 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       %{
         "id" => iri,
         "type" => "OrderedCollection",
-        "totalItems" => -1,
         "first" => page
       }
       |> Map.merge(Utils.make_json_ld_header())
diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index 69f5f992c..a49b381c9 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -166,7 +166,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
       sensitive: sensitive,
       spoiler_text: object["summary"] || "",
       visibility: get_visibility(object),
-      media_attachments: attachments |> Enum.take(4),
+      media_attachments: attachments,
       mentions: mentions,
       tags: build_tags(tags),
       application: %{
diff --git a/lib/pleroma/web/media_proxy/media_proxy.ex b/lib/pleroma/web/media_proxy/media_proxy.ex
index 1e9da7283..39a725a69 100644
--- a/lib/pleroma/web/media_proxy/media_proxy.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy.ex
@@ -19,11 +19,16 @@ defmodule Pleroma.Web.MediaProxy do
     else
       secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
 
+      # Must preserve `%2F` for compatibility with S3 (https://git.pleroma.social/pleroma/pleroma/issues/580)
+      replacement = get_replacement(url, ":2F:")
+
       # The URL is url-decoded and encoded again to ensure it is correctly encoded and not twice.
       base64 =
         url
+        |> String.replace("%2F", replacement)
         |> URI.decode()
         |> URI.encode()
+        |> String.replace(replacement, "%2F")
         |> Base.url_encode64(@base64_opts)
 
       sig = :crypto.hmac(:sha, secret, base64)
@@ -60,4 +65,12 @@ defmodule Pleroma.Web.MediaProxy do
     |> Enum.filter(fn value -> value end)
     |> Path.join()
   end
+
+  defp get_replacement(url, replacement) do
+    if String.contains?(url, replacement) do
+      get_replacement(url, replacement <> replacement)
+    else
+      replacement
+    end
+  end
 end
diff --git a/lib/pleroma/web/oauth/app.ex b/lib/pleroma/web/oauth/app.ex
index 3e8acde31..8b61bf3a4 100644
--- a/lib/pleroma/web/oauth/app.ex
+++ b/lib/pleroma/web/oauth/app.ex
@@ -25,8 +25,14 @@ defmodule Pleroma.Web.OAuth.App do
 
     if changeset.valid? do
       changeset
-      |> put_change(:client_id, :crypto.strong_rand_bytes(32) |> Base.url_encode64())
-      |> put_change(:client_secret, :crypto.strong_rand_bytes(32) |> Base.url_encode64())
+      |> put_change(
+        :client_id,
+        :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
+      )
+      |> put_change(
+        :client_secret,
+        :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
+      )
     else
       changeset
     end
diff --git a/lib/pleroma/web/oauth/authorization.ex b/lib/pleroma/web/oauth/authorization.ex
index 75c9ab9aa..9039b8b45 100644
--- a/lib/pleroma/web/oauth/authorization.ex
+++ b/lib/pleroma/web/oauth/authorization.ex
@@ -24,7 +24,7 @@ defmodule Pleroma.Web.OAuth.Authorization do
   end
 
   def create_authorization(%App{} = app, %User{} = user) do
-    token = :crypto.strong_rand_bytes(32) |> Base.url_encode64()
+    token = :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
 
     authorization = %Authorization{
       token: token,
diff --git a/lib/pleroma/web/oauth/oauth_controller.ex b/lib/pleroma/web/oauth/oauth_controller.ex
index e4d0601f8..dddfcf299 100644
--- a/lib/pleroma/web/oauth/oauth_controller.ex
+++ b/lib/pleroma/web/oauth/oauth_controller.ex
@@ -173,7 +173,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     token
     |> URI.decode()
     |> Base.url_decode64!(padding: false)
-    |> Base.url_encode64()
+    |> Base.url_encode64(padding: false)
   end
 
   defp get_app_from_request(conn, params) do
diff --git a/lib/pleroma/web/oauth/token.ex b/lib/pleroma/web/oauth/token.ex
index b0bbeeb69..ca9e718ac 100644
--- a/lib/pleroma/web/oauth/token.ex
+++ b/lib/pleroma/web/oauth/token.ex
@@ -31,8 +31,8 @@ defmodule Pleroma.Web.OAuth.Token do
   end
 
   def create_token(%App{} = app, %User{} = user) do
-    token = :crypto.strong_rand_bytes(32) |> Base.url_encode64()
-    refresh_token = :crypto.strong_rand_bytes(32) |> Base.url_encode64()
+    token = :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
+    refresh_token = :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
 
     token = %Token{
       token: token,
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 5b5627ce8..d66a1c2a1 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -468,8 +468,8 @@ defmodule Pleroma.Web.Router do
 
   scope "/", Pleroma.Web.ActivityPub do
     pipe_through(:activitypub)
-    post("/users/:nickname/inbox", ActivityPubController, :inbox)
     post("/inbox", ActivityPubController, :inbox)
+    post("/users/:nickname/inbox", ActivityPubController, :inbox)
   end
 
   scope "/.well-known", Pleroma.Web do
diff --git a/lib/pleroma/web/templates/layout/app.html.eex b/lib/pleroma/web/templates/layout/app.html.eex
index 8dd3284d6..520e4b3d5 100644
--- a/lib/pleroma/web/templates/layout/app.html.eex
+++ b/lib/pleroma/web/templates/layout/app.html.eex
@@ -67,6 +67,32 @@
         font-weight: 500;
         font-size: 16px;
       }
+
+      .alert-danger {
+        box-sizing: border-box;
+        width: 100%;
+        color: #D8000C;
+        background-color: #FFD2D2;
+        border-radius: 4px;
+        border: none;
+        padding: 10px;
+        margin-top: 20px;
+        font-weight: 500;
+        font-size: 16px;
+      }
+
+      .alert-info {
+        box-sizing: border-box;
+        width: 100%;
+        color: #00529B;
+        background-color: #BDE5F8;
+        border-radius: 4px;
+        border: none;
+        padding: 10px;
+        margin-top: 20px;
+        font-weight: 500;
+        font-size: 16px;
+      }
     </style>
   </head>
   <body>
diff --git a/lib/pleroma/web/templates/o_auth/o_auth/show.html.eex b/lib/pleroma/web/templates/o_auth/o_auth/show.html.eex
index de2241ec9..32c458f0c 100644
--- a/lib/pleroma/web/templates/o_auth/o_auth/show.html.eex
+++ b/lib/pleroma/web/templates/o_auth/o_auth/show.html.eex
@@ -1,5 +1,9 @@
+<%= if get_flash(@conn, :info) do %>
 <p class="alert alert-info" role="alert"><%= get_flash(@conn, :info) %></p>
+<% end %>
+<%= if get_flash(@conn, :error) do %>
 <p class="alert alert-danger" role="alert"><%= get_flash(@conn, :error) %></p>
+<% end %>
 <h2>OAuth Authorization</h2>
 <%= form_for @conn, o_auth_path(@conn, :authorize), [as: "authorization"], fn f -> %>
 <%= label f, :name, "Name or email" %>
diff --git a/mix.exs b/mix.exs
index d46998891..ee1c00bb9 100644
--- a/mix.exs
+++ b/mix.exs
@@ -21,7 +21,14 @@ defmodule Pleroma.Mixfile do
       homepage_url: "https://pleroma.social/",
       docs: [
         logo: "priv/static/static/logo.png",
-        extras: ["README.md", "docs/config.md", "docs/Pleroma-API.md", "docs/Admin-API.md"],
+        extras: [
+          "README.md",
+          "docs/config.md",
+          "docs/Pleroma-API.md",
+          "docs/Admin-API.md",
+          "docs/Clients.md",
+          "docs/Differences-in-MastodonAPI-Responses.md"
+        ],
         main: "readme",
         output: "priv/static/doc"
       ]
diff --git a/priv/static/schemas/litepub-0.1.jsonld b/priv/static/schemas/litepub-0.1.jsonld
index 15645646a..f36b231c5 100644
--- a/priv/static/schemas/litepub-0.1.jsonld
+++ b/priv/static/schemas/litepub-0.1.jsonld
@@ -19,7 +19,11 @@
             "value": "schema:value",
             "sensitive": "as:sensitive",
             "litepub": "http://litepub.social/ns#",
-            "directMessage": "litepub:directMessage"
+            "directMessage": "litepub:directMessage",
+            "oauthRegistrationEndpoint": {
+                "@id": "litepub:oauthRegistrationEndpoint",
+                "@type": "@id"
+            }
         }
     ]
 }
diff --git a/test/formatter_test.exs b/test/formatter_test.exs
index 2e717194b..f14077d25 100644
--- a/test/formatter_test.exs
+++ b/test/formatter_test.exs
@@ -197,7 +197,7 @@ defmodule Pleroma.FormatterTest do
 
       {subs, text} = Formatter.add_user_links({[], text}, mentions)
 
-      assert length(subs) == 0
+      assert Enum.empty?(subs)
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
       expected_text = "@a hi"
diff --git a/test/media_proxy_test.exs b/test/media_proxy_test.exs
index 05d927422..ddbadfbf5 100644
--- a/test/media_proxy_test.exs
+++ b/test/media_proxy_test.exs
@@ -140,6 +140,15 @@ defmodule Pleroma.MediaProxyTest do
 
       assert String.starts_with?(encoded, Pleroma.Config.get([:media_proxy, :base_url]))
     end
+
+    # https://git.pleroma.social/pleroma/pleroma/issues/580
+    test "encoding S3 links (must preserve `%2F`)" do
+      url =
+        "https://s3.amazonaws.com/example/test.png?X-Amz-Credential=your-access-key-id%2F20130721%2Fus-east-1%2Fs3%2Faws4_request"
+
+      encoded = url(url)
+      assert decode_result(encoded) == url
+    end
   end
 
   describe "when disabled" do
diff --git a/test/notification_test.exs b/test/notification_test.exs
index 94fb0ab15..755874a3d 100644
--- a/test/notification_test.exs
+++ b/test/notification_test.exs
@@ -6,7 +6,8 @@ defmodule Pleroma.NotificationTest do
   use Pleroma.DataCase
   alias Pleroma.Web.TwitterAPI.TwitterAPI
   alias Pleroma.Web.CommonAPI
-  alias Pleroma.{User, Notification}
+  alias Pleroma.User
+  alias Pleroma.Notification
   alias Pleroma.Web.ActivityPub.Transmogrifier
   import Pleroma.Factory
 
@@ -299,7 +300,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:ok, _, _} = CommonAPI.favorite(activity.id, other_user)
 
@@ -307,7 +308,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, _} = CommonAPI.delete(activity.id, user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
 
     test "liking an activity results in 1 notification, then 0 if the activity is unliked" do
@@ -316,7 +317,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:ok, _, _} = CommonAPI.favorite(activity.id, other_user)
 
@@ -324,7 +325,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, _, _, _} = CommonAPI.unfavorite(activity.id, other_user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
 
     test "repeating an activity results in 1 notification, then 0 if the activity is deleted" do
@@ -333,7 +334,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:ok, _, _} = CommonAPI.repeat(activity.id, other_user)
 
@@ -341,7 +342,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, _} = CommonAPI.delete(activity.id, user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
 
     test "repeating an activity results in 1 notification, then 0 if the activity is unrepeated" do
@@ -350,7 +351,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:ok, _, _} = CommonAPI.repeat(activity.id, other_user)
 
@@ -358,7 +359,7 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, _, _} = CommonAPI.unrepeat(activity.id, other_user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
 
     test "liking an activity which is already deleted does not generate a notification" do
@@ -367,15 +368,15 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:ok, _deletion_activity} = CommonAPI.delete(activity.id, user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:error, _} = CommonAPI.favorite(activity.id, other_user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
 
     test "repeating an activity which is already deleted does not generate a notification" do
@@ -384,15 +385,15 @@ defmodule Pleroma.NotificationTest do
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:ok, _deletion_activity} = CommonAPI.delete(activity.id, user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
 
       {:error, _} = CommonAPI.repeat(activity.id, other_user)
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
 
     test "replying to a deleted post without tagging does not generate a notification" do
@@ -408,7 +409,7 @@ defmodule Pleroma.NotificationTest do
           "in_reply_to_status_id" => activity.id
         })
 
-      assert length(Notification.for_user(user)) == 0
+      assert Enum.empty?(Notification.for_user(user))
     end
   end
 end
diff --git a/test/object_test.exs b/test/object_test.exs
index ab6431012..9f5283d2d 100644
--- a/test/object_test.exs
+++ b/test/object_test.exs
@@ -5,7 +5,8 @@
 defmodule Pleroma.ObjectTest do
   use Pleroma.DataCase
   import Pleroma.Factory
-  alias Pleroma.{Repo, Object}
+  alias Pleroma.Repo
+  alias Pleroma.Object
 
   test "returns an object by it's AP id" do
     object = insert(:note)
diff --git a/test/support/builders/user_builder.ex b/test/support/builders/user_builder.ex
index 7a1ca79b5..611a5be18 100644
--- a/test/support/builders/user_builder.ex
+++ b/test/support/builders/user_builder.ex
@@ -1,5 +1,6 @@
 defmodule Pleroma.Builders.UserBuilder do
-  alias Pleroma.{User, Repo}
+  alias Pleroma.User
+  alias Pleroma.Repo
 
   def build(data \\ %{}) do
     user = %User{
diff --git a/test/tasks/relay_test.exs b/test/tasks/relay_test.exs
index 96fac4811..64ff07753 100644
--- a/test/tasks/relay_test.exs
+++ b/test/tasks/relay_test.exs
@@ -4,7 +4,9 @@
 
 defmodule Mix.Tasks.Pleroma.RelayTest do
   alias Pleroma.Activity
-  alias Pleroma.Web.ActivityPub.{ActivityPub, Relay, Utils}
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Utils
+  alias Pleroma.Web.ActivityPub.Relay
   alias Pleroma.User
   use Pleroma.DataCase
 
diff --git a/test/tasks/user_test.exs b/test/tasks/user_test.exs
index 44271898c..7b814d171 100644
--- a/test/tasks/user_test.exs
+++ b/test/tasks/user_test.exs
@@ -151,7 +151,7 @@ defmodule Mix.Tasks.Pleroma.UserTest do
       assert message =~ "Successfully unsubscribed"
 
       user = User.get_by_nickname(user.nickname)
-      assert length(user.following) == 0
+      assert Enum.empty?(user.following)
       assert user.info.deactivated
     end
 
diff --git a/test/user_test.exs b/test/user_test.exs
index a282274ce..92991d063 100644
--- a/test/user_test.exs
+++ b/test/user_test.exs
@@ -4,7 +4,9 @@
 
 defmodule Pleroma.UserTest do
   alias Pleroma.Builders.UserBuilder
-  alias Pleroma.{User, Repo, Activity}
+  alias Pleroma.Activity
+  alias Pleroma.Repo
+  alias Pleroma.User
   alias Pleroma.Web.CommonAPI
   use Pleroma.DataCase
 
@@ -194,6 +196,26 @@ defmodule Pleroma.UserTest do
 
       assert User.following?(registered_user, user)
       refute User.following?(registered_user, remote_user)
+
+      Pleroma.Config.put([:instance, :autofollowed_nicknames], [])
+    end
+
+    test "it sends a welcome message if it is set" do
+      welcome_user = insert(:user)
+
+      Pleroma.Config.put([:instance, :welcome_user_nickname], welcome_user.nickname)
+      Pleroma.Config.put([:instance, :welcome_message], "Hello, this is a cool site")
+
+      cng = User.register_changeset(%User{}, @full_user_data)
+      {:ok, registered_user} = User.register(cng)
+
+      activity = Repo.one(Pleroma.Activity)
+      assert registered_user.ap_id in activity.recipients
+      assert activity.data["object"]["content"] =~ "cool site"
+      assert activity.actor == welcome_user.ap_id
+
+      Pleroma.Config.put([:instance, :welcome_user_nickname], nil)
+      Pleroma.Config.put([:instance, :welcome_message], nil)
     end
 
     test "it requires an email, name, nickname and password, bio is optional" do
@@ -876,6 +898,16 @@ defmodule Pleroma.UserTest do
         assert [] == User.search(query)
       end)
     end
+
+    test "works with URIs" do
+      results = User.search("http://mastodon.example.org/users/admin", true)
+      result = results |> List.first()
+
+      user = User.get_by_ap_id("http://mastodon.example.org/users/admin")
+
+      assert length(results) == 1
+      assert user == result |> Map.put(:search_rank, nil)
+    end
   end
 
   test "auth_active?/1 works correctly" do
diff --git a/test/web/activity_pub/activity_pub_controller_test.exs b/test/web/activity_pub/activity_pub_controller_test.exs
index 570bee6b3..398bedf77 100644
--- a/test/web/activity_pub/activity_pub_controller_test.exs
+++ b/test/web/activity_pub/activity_pub_controller_test.exs
@@ -5,8 +5,13 @@
 defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
   use Pleroma.Web.ConnCase
   import Pleroma.Factory
-  alias Pleroma.Web.ActivityPub.{UserView, ObjectView}
-  alias Pleroma.{Object, Repo, Activity, User, Instances}
+  alias Pleroma.Web.ActivityPub.UserView
+  alias Pleroma.Web.ActivityPub.ObjectView
+  alias Pleroma.Object
+  alias Pleroma.Repo
+  alias Pleroma.Activity
+  alias Pleroma.User
+  alias Pleroma.Instances
 
   setup_all do
     Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
@@ -397,7 +402,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
         |> json_response(200)
 
       assert result["first"]["orderedItems"] == []
-      assert result["totalItems"] == 1
+      assert result["totalItems"] == 0
     end
 
     test "it works for more than 10 users", %{conn: conn} do
@@ -452,7 +457,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
         |> json_response(200)
 
       assert result["first"]["orderedItems"] == []
-      assert result["totalItems"] == 1
+      assert result["totalItems"] == 0
     end
 
     test "it works for more than 10 users", %{conn: conn} do
diff --git a/test/web/activity_pub/activity_pub_test.exs b/test/web/activity_pub/activity_pub_test.exs
index a55961ac4..a6f8b822a 100644
--- a/test/web/activity_pub/activity_pub_test.exs
+++ b/test/web/activity_pub/activity_pub_test.exs
@@ -7,7 +7,10 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.CommonAPI
-  alias Pleroma.{Activity, Object, User, Instances}
+  alias Pleroma.Activity
+  alias Pleroma.Object
+  alias Pleroma.User
+  alias Pleroma.Instances
   alias Pleroma.Builders.ActivityBuilder
 
   import Pleroma.Factory
diff --git a/test/web/activity_pub/mrf/hellthread_policy_test.exs b/test/web/activity_pub/mrf/hellthread_policy_test.exs
new file mode 100644
index 000000000..eb6ee4d04
--- /dev/null
+++ b/test/web/activity_pub/mrf/hellthread_policy_test.exs
@@ -0,0 +1,73 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicyTest do
+  use Pleroma.DataCase
+  import Pleroma.Factory
+
+  import Pleroma.Web.ActivityPub.MRF.HellthreadPolicy
+
+  setup do
+    user = insert(:user)
+
+    message = %{
+      "actor" => user.ap_id,
+      "cc" => [user.follower_address],
+      "type" => "Create",
+      "to" => [
+        "https://www.w3.org/ns/activitystreams#Public",
+        "https://instance.tld/users/user1",
+        "https://instance.tld/users/user2",
+        "https://instance.tld/users/user3"
+      ]
+    }
+
+    [user: user, message: message]
+  end
+
+  describe "reject" do
+    test "rejects the message if the recipient count is above reject_threshold", %{
+      message: message
+    } do
+      Pleroma.Config.put([:mrf_hellthread], %{delist_threshold: 0, reject_threshold: 2})
+
+      {:reject, nil} = filter(message)
+    end
+
+    test "does not reject the message if the recipient count is below reject_threshold", %{
+      message: message
+    } do
+      Pleroma.Config.put([:mrf_hellthread], %{delist_threshold: 0, reject_threshold: 3})
+
+      assert {:ok, ^message} = filter(message)
+    end
+  end
+
+  describe "delist" do
+    test "delists the message if the recipient count is above delist_threshold", %{
+      user: user,
+      message: message
+    } do
+      Pleroma.Config.put([:mrf_hellthread], %{delist_threshold: 2, reject_threshold: 0})
+
+      {:ok, message} = filter(message)
+      assert user.follower_address in message["to"]
+      assert "https://www.w3.org/ns/activitystreams#Public" in message["cc"]
+    end
+
+    test "does not delist the message if the recipient count is below delist_threshold", %{
+      message: message
+    } do
+      Pleroma.Config.put([:mrf_hellthread], %{delist_threshold: 4, reject_threshold: 0})
+
+      assert {:ok, ^message} = filter(message)
+    end
+  end
+
+  test "excludes follower collection and public URI from threshold count", %{message: message} do
+    Pleroma.Config.put([:mrf_hellthread], %{delist_threshold: 0, reject_threshold: 3})
+
+    assert {:ok, ^message} = filter(message)
+  end
+end
diff --git a/test/web/activity_pub/transmogrifier_test.exs b/test/web/activity_pub/transmogrifier_test.exs
index 8d1b06096..89655da59 100644
--- a/test/web/activity_pub/transmogrifier_test.exs
+++ b/test/web/activity_pub/transmogrifier_test.exs
@@ -1136,4 +1136,58 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
         )
     end
   end
+
+  describe "reserialization" do
+    test "successfully reserializes a message with inReplyTo == nil" do
+      user = insert(:user)
+
+      message = %{
+        "@context" => "https://www.w3.org/ns/activitystreams",
+        "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+        "cc" => [],
+        "type" => "Create",
+        "object" => %{
+          "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+          "cc" => [],
+          "type" => "Note",
+          "content" => "Hi",
+          "inReplyTo" => nil,
+          "attributedTo" => user.ap_id
+        },
+        "actor" => user.ap_id
+      }
+
+      {:ok, activity} = Transmogrifier.handle_incoming(message)
+
+      {:ok, _} = Transmogrifier.prepare_outgoing(activity.data)
+    end
+
+    test "successfully reserializes a message with AS2 objects in IR" do
+      user = insert(:user)
+
+      message = %{
+        "@context" => "https://www.w3.org/ns/activitystreams",
+        "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+        "cc" => [],
+        "type" => "Create",
+        "object" => %{
+          "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+          "cc" => [],
+          "type" => "Note",
+          "content" => "Hi",
+          "inReplyTo" => nil,
+          "attributedTo" => user.ap_id,
+          "tag" => [
+            %{"name" => "#2hu", "href" => "http://example.com/2hu", "type" => "Hashtag"},
+            %{"name" => "Bob", "href" => "http://example.com/bob", "type" => "Mention"}
+          ]
+        },
+        "actor" => user.ap_id
+      }
+
+      {:ok, activity} = Transmogrifier.handle_incoming(message)
+
+      {:ok, _} = Transmogrifier.prepare_outgoing(activity.data)
+    end
+  end
 end
diff --git a/test/web/activity_pub/views/user_view_test.exs b/test/web/activity_pub/views/user_view_test.exs
index 7fc870e96..0bc1d4728 100644
--- a/test/web/activity_pub/views/user_view_test.exs
+++ b/test/web/activity_pub/views/user_view_test.exs
@@ -15,4 +15,43 @@ defmodule Pleroma.Web.ActivityPub.UserViewTest do
 
     assert String.contains?(result["publicKey"]["publicKeyPem"], "BEGIN PUBLIC KEY")
   end
+
+  describe "endpoints" do
+    test "local users have a usable endpoints structure" do
+      user = insert(:user)
+      {:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
+
+      result = UserView.render("user.json", %{user: user})
+
+      assert result["id"] == user.ap_id
+
+      %{
+        "sharedInbox" => _,
+        "oauthAuthorizationEndpoint" => _,
+        "oauthRegistrationEndpoint" => _,
+        "oauthTokenEndpoint" => _
+      } = result["endpoints"]
+    end
+
+    test "remote users have an empty endpoints structure" do
+      user = insert(:user, local: false)
+      {:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
+
+      result = UserView.render("user.json", %{user: user})
+
+      assert result["id"] == user.ap_id
+      assert result["endpoints"] == %{}
+    end
+
+    test "instance users do not expose oAuth endpoints" do
+      user = insert(:user, nickname: nil, local: true)
+      {:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
+
+      result = UserView.render("user.json", %{user: user})
+
+      refute result["endpoints"]["oauthAuthorizationEndpoint"]
+      refute result["endpoints"]["oauthRegistrationEndpoint"]
+      refute result["endpoints"]["oauthTokenEndpoint"]
+    end
+  end
 end
diff --git a/test/web/admin_api/admin_api_controller_test.exs b/test/web/admin_api/admin_api_controller_test.exs
index 42450a7b6..a27c26f95 100644
--- a/test/web/admin_api/admin_api_controller_test.exs
+++ b/test/web/admin_api/admin_api_controller_test.exs
@@ -5,7 +5,8 @@
 defmodule Pleroma.Web.AdminAPI.AdminAPIControllerTest do
   use Pleroma.Web.ConnCase
 
-  alias Pleroma.{Repo, User}
+  alias Pleroma.Repo
+  alias Pleroma.User
   import Pleroma.Factory
 
   describe "/api/pleroma/admin/user" do
diff --git a/test/web/common_api/common_api_test.exs b/test/web/common_api/common_api_test.exs
index d26b6e49c..870648fb5 100644
--- a/test/web/common_api/common_api_test.exs
+++ b/test/web/common_api/common_api_test.exs
@@ -2,7 +2,7 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Web.CommonAPI.Test do
+defmodule Pleroma.Web.CommonAPITest do
   use Pleroma.DataCase
   alias Pleroma.Web.CommonAPI
   alias Pleroma.User
diff --git a/test/web/common_api/common_api_utils_test.exs b/test/web/common_api/common_api_utils_test.exs
index 754bc7255..faed6b685 100644
--- a/test/web/common_api/common_api_utils_test.exs
+++ b/test/web/common_api/common_api_utils_test.exs
@@ -5,7 +5,7 @@
 defmodule Pleroma.Web.CommonAPI.UtilsTest do
   alias Pleroma.Web.CommonAPI.Utils
   alias Pleroma.Web.Endpoint
-  alias Pleroma.Builders.{UserBuilder}
+  alias Pleroma.Builders.UserBuilder
   use Pleroma.DataCase
 
   test "it adds attachment links to a given text and attachment set" do
diff --git a/test/web/federator_test.exs b/test/web/federator_test.exs
index 05f813291..9f8d71454 100644
--- a/test/web/federator_test.exs
+++ b/test/web/federator_test.exs
@@ -3,7 +3,8 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.FederatorTest do
-  alias Pleroma.Web.{CommonAPI, Federator}
+  alias Pleroma.Web.CommonAPI
+  alias Pleroma.Web.Federator
   alias Pleroma.Instances
   use Pleroma.DataCase
   import Pleroma.Factory
diff --git a/test/web/mastodon_api/mastodon_api_controller_test.exs b/test/web/mastodon_api/mastodon_api_controller_test.exs
index 1a60ad8e6..26c9c25a6 100644
--- a/test/web/mastodon_api/mastodon_api_controller_test.exs
+++ b/test/web/mastodon_api/mastodon_api_controller_test.exs
@@ -6,8 +6,13 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIControllerTest do
   use Pleroma.Web.ConnCase
 
   alias Pleroma.Web.TwitterAPI.TwitterAPI
-  alias Pleroma.{Repo, User, Object, Activity, Notification}
-  alias Pleroma.Web.{OStatus, CommonAPI}
+  alias Pleroma.Repo
+  alias Pleroma.User
+  alias Pleroma.Object
+  alias Pleroma.Activity
+  alias Pleroma.Notification
+  alias Pleroma.Web.OStatus
+  alias Pleroma.Web.CommonAPI
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.MastodonAPI.FilterView
   alias Ecto.Changeset
@@ -31,7 +36,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIControllerTest do
       |> assign(:user, user)
       |> get("/api/v1/timelines/home")
 
-    assert length(json_response(conn, 200)) == 0
+    assert Enum.empty?(json_response(conn, 200))
 
     {:ok, user} = User.follow(user, following)
 
diff --git a/test/web/mastodon_api/status_view_test.exs b/test/web/mastodon_api/status_view_test.exs
index 2106253f2..0dc9c538c 100644
--- a/test/web/mastodon_api/status_view_test.exs
+++ b/test/web/mastodon_api/status_view_test.exs
@@ -5,7 +5,8 @@
 defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
   use Pleroma.DataCase
 
-  alias Pleroma.Web.MastodonAPI.{StatusView, AccountView}
+  alias Pleroma.Web.MastodonAPI.AccountView
+  alias Pleroma.Web.MastodonAPI.StatusView
   alias Pleroma.User
   alias Pleroma.Web.OStatus
   alias Pleroma.Web.CommonAPI
diff --git a/test/web/oauth/authorization_test.exs b/test/web/oauth/authorization_test.exs
index 3b1ddada8..81618e935 100644
--- a/test/web/oauth/authorization_test.exs
+++ b/test/web/oauth/authorization_test.exs
@@ -4,7 +4,8 @@
 
 defmodule Pleroma.Web.OAuth.AuthorizationTest do
   use Pleroma.DataCase
-  alias Pleroma.Web.OAuth.{Authorization, App}
+  alias Pleroma.Web.OAuth.Authorization
+  alias Pleroma.Web.OAuth.App
   import Pleroma.Factory
 
   test "create an authorization token for a valid app" do
diff --git a/test/web/oauth/oauth_controller_test.exs b/test/web/oauth/oauth_controller_test.exs
index e0d3cb55f..2315f9a34 100644
--- a/test/web/oauth/oauth_controller_test.exs
+++ b/test/web/oauth/oauth_controller_test.exs
@@ -7,7 +7,8 @@ defmodule Pleroma.Web.OAuth.OAuthControllerTest do
   import Pleroma.Factory
 
   alias Pleroma.Repo
-  alias Pleroma.Web.OAuth.{Authorization, Token}
+  alias Pleroma.Web.OAuth.Authorization
+  alias Pleroma.Web.OAuth.Token
 
   test "redirects with oauth authorization" do
     user = insert(:user)
diff --git a/test/web/oauth/token_test.exs b/test/web/oauth/token_test.exs
index 9a241d61a..4dab4a308 100644
--- a/test/web/oauth/token_test.exs
+++ b/test/web/oauth/token_test.exs
@@ -4,7 +4,9 @@
 
 defmodule Pleroma.Web.OAuth.TokenTest do
   use Pleroma.DataCase
-  alias Pleroma.Web.OAuth.{App, Token, Authorization}
+  alias Pleroma.Web.OAuth.App
+  alias Pleroma.Web.OAuth.Authorization
+  alias Pleroma.Web.OAuth.Token
   alias Pleroma.Repo
 
   import Pleroma.Factory
diff --git a/test/web/ostatus/activity_representer_test.exs b/test/web/ostatus/activity_representer_test.exs
index 0869f2fd5..eebc5c040 100644
--- a/test/web/ostatus/activity_representer_test.exs
+++ b/test/web/ostatus/activity_representer_test.exs
@@ -6,7 +6,9 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenterTest do
   use Pleroma.DataCase
 
   alias Pleroma.Web.OStatus.ActivityRepresenter
-  alias Pleroma.{User, Activity, Object}
+  alias Pleroma.Activity
+  alias Pleroma.User
+  alias Pleroma.Object
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.OStatus
 
diff --git a/test/web/ostatus/feed_representer_test.exs b/test/web/ostatus/feed_representer_test.exs
index 55717dec7..efd4e7217 100644
--- a/test/web/ostatus/feed_representer_test.exs
+++ b/test/web/ostatus/feed_representer_test.exs
@@ -6,7 +6,9 @@ defmodule Pleroma.Web.OStatus.FeedRepresenterTest do
   use Pleroma.DataCase
   import Pleroma.Factory
   alias Pleroma.User
-  alias Pleroma.Web.OStatus.{FeedRepresenter, UserRepresenter, ActivityRepresenter}
+  alias Pleroma.Web.OStatus.ActivityRepresenter
+  alias Pleroma.Web.OStatus.FeedRepresenter
+  alias Pleroma.Web.OStatus.UserRepresenter
   alias Pleroma.Web.OStatus
 
   test "returns a feed of the last 20 items of the user" do
diff --git a/test/web/ostatus/incoming_documents/delete_handling_test.exs b/test/web/ostatus/incoming_documents/delete_handling_test.exs
index d97cd79f4..d295cc539 100644
--- a/test/web/ostatus/incoming_documents/delete_handling_test.exs
+++ b/test/web/ostatus/incoming_documents/delete_handling_test.exs
@@ -4,7 +4,9 @@ defmodule Pleroma.Web.OStatus.DeleteHandlingTest do
   import Pleroma.Factory
   import Tesla.Mock
 
-  alias Pleroma.{Repo, Activity, Object}
+  alias Pleroma.Repo
+  alias Pleroma.Activity
+  alias Pleroma.Object
   alias Pleroma.Web.OStatus
 
   setup do
diff --git a/test/web/ostatus/ostatus_controller_test.exs b/test/web/ostatus/ostatus_controller_test.exs
index 3145ca9a1..da9c72be8 100644
--- a/test/web/ostatus/ostatus_controller_test.exs
+++ b/test/web/ostatus/ostatus_controller_test.exs
@@ -5,7 +5,9 @@
 defmodule Pleroma.Web.OStatus.OStatusControllerTest do
   use Pleroma.Web.ConnCase
   import Pleroma.Factory
-  alias Pleroma.{User, Repo, Object}
+  alias Pleroma.User
+  alias Pleroma.Repo
+  alias Pleroma.Object
   alias Pleroma.Web.CommonAPI
   alias Pleroma.Web.OStatus.ActivityRepresenter
 
diff --git a/test/web/ostatus/ostatus_test.exs b/test/web/ostatus/ostatus_test.exs
index dbe5de2e2..b4b19ab05 100644
--- a/test/web/ostatus/ostatus_test.exs
+++ b/test/web/ostatus/ostatus_test.exs
@@ -6,7 +6,11 @@ defmodule Pleroma.Web.OStatusTest do
   use Pleroma.DataCase
   alias Pleroma.Web.OStatus
   alias Pleroma.Web.XML
-  alias Pleroma.{Object, Repo, User, Activity, Instances}
+  alias Pleroma.Object
+  alias Pleroma.Repo
+  alias Pleroma.User
+  alias Pleroma.Activity
+  alias Pleroma.Instances
   import Pleroma.Factory
   import ExUnit.CaptureLog
 
diff --git a/test/web/salmon/salmon_test.exs b/test/web/salmon/salmon_test.exs
index c539a28b2..9e583ba40 100644
--- a/test/web/salmon/salmon_test.exs
+++ b/test/web/salmon/salmon_test.exs
@@ -5,7 +5,9 @@
 defmodule Pleroma.Web.Salmon.SalmonTest do
   use Pleroma.DataCase
   alias Pleroma.Web.Salmon
-  alias Pleroma.{Repo, Activity, User}
+  alias Pleroma.Activity
+  alias Pleroma.Repo
+  alias Pleroma.User
   import Pleroma.Factory
 
   @magickey "RSA.pu0s-halox4tu7wmES1FVSx6u-4wc0YrUFXcqWXZG4-27UmbCOpMQftRCldNRfyA-qLbz-eqiwQhh-1EwUvjsD4cYbAHNGHwTvDOyx5AKthQUP44ykPv7kjKGh3DWKySJvcs9tlUG87hlo7AvnMo9pwRS_Zz2CacQ-MKaXyDepk=.AQAB"
diff --git a/test/web/twitter_api/representers/activity_representer_test.exs b/test/web/twitter_api/representers/activity_representer_test.exs
index ea5813733..365c7f659 100644
--- a/test/web/twitter_api/representers/activity_representer_test.exs
+++ b/test/web/twitter_api/representers/activity_representer_test.exs
@@ -4,8 +4,11 @@
 
 defmodule Pleroma.Web.TwitterAPI.Representers.ActivityRepresenterTest do
   use Pleroma.DataCase
-  alias Pleroma.{User, Activity, Object}
-  alias Pleroma.Web.TwitterAPI.Representers.{ActivityRepresenter, ObjectRepresenter}
+  alias Pleroma.User
+  alias Pleroma.Activity
+  alias Pleroma.Object
+  alias Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter
+  alias Pleroma.Web.TwitterAPI.Representers.ObjectRepresenter
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.TwitterAPI.UserView
   import Pleroma.Factory
diff --git a/test/web/twitter_api/twitter_api_controller_test.exs b/test/web/twitter_api/twitter_api_controller_test.exs
index 855ae1526..acb03b146 100644
--- a/test/web/twitter_api/twitter_api_controller_test.exs
+++ b/test/web/twitter_api/twitter_api_controller_test.exs
@@ -5,8 +5,13 @@
 defmodule Pleroma.Web.TwitterAPI.ControllerTest do
   use Pleroma.Web.ConnCase
   alias Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter
-  alias Pleroma.Builders.{ActivityBuilder, UserBuilder}
-  alias Pleroma.{Repo, Activity, User, Object, Notification}
+  alias Pleroma.Builders.ActivityBuilder
+  alias Pleroma.Builders.UserBuilder
+  alias Pleroma.Repo
+  alias Pleroma.Activity
+  alias Pleroma.User
+  alias Pleroma.Object
+  alias Pleroma.Notification
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.TwitterAPI.UserView
   alias Pleroma.Web.TwitterAPI.NotificationView
diff --git a/test/web/twitter_api/twitter_api_test.exs b/test/web/twitter_api/twitter_api_test.exs
index 48ddbcf50..aa2a4d650 100644
--- a/test/web/twitter_api/twitter_api_test.exs
+++ b/test/web/twitter_api/twitter_api_test.exs
@@ -4,8 +4,13 @@
 
 defmodule Pleroma.Web.TwitterAPI.TwitterAPITest do
   use Pleroma.DataCase
-  alias Pleroma.Web.TwitterAPI.{TwitterAPI, UserView}
-  alias Pleroma.{Activity, User, Object, Repo, UserInviteToken}
+  alias Pleroma.Web.TwitterAPI.TwitterAPI
+  alias Pleroma.Web.TwitterAPI.UserView
+  alias Pleroma.Activity
+  alias Pleroma.User
+  alias Pleroma.Object
+  alias Pleroma.Repo
+  alias Pleroma.UserInviteToken
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.TwitterAPI.ActivityView
 
diff --git a/test/web/twitter_api/views/notification_view_test.exs b/test/web/twitter_api/views/notification_view_test.exs
index 8367fc6c7..3a67f7292 100644
--- a/test/web/twitter_api/views/notification_view_test.exs
+++ b/test/web/twitter_api/views/notification_view_test.exs
@@ -5,7 +5,8 @@
 defmodule Pleroma.Web.TwitterAPI.NotificationViewTest do
   use Pleroma.DataCase
 
-  alias Pleroma.{User, Notification}
+  alias Pleroma.User
+  alias Pleroma.Notification
   alias Pleroma.Web.TwitterAPI.TwitterAPI
   alias Pleroma.Web.TwitterAPI.NotificationView
   alias Pleroma.Web.TwitterAPI.UserView
diff --git a/test/web/websub/websub_controller_test.exs b/test/web/websub/websub_controller_test.exs
index 6492df2a0..87b01d89b 100644
--- a/test/web/websub/websub_controller_test.exs
+++ b/test/web/websub/websub_controller_test.exs
@@ -6,7 +6,8 @@ defmodule Pleroma.Web.Websub.WebsubControllerTest do
   use Pleroma.Web.ConnCase
   import Pleroma.Factory
   alias Pleroma.Web.Websub.WebsubClientSubscription
-  alias Pleroma.{Repo, Activity}
+  alias Pleroma.Activity
+  alias Pleroma.Repo
   alias Pleroma.Web.Websub
 
   test "websub subscription request", %{conn: conn} do
@@ -80,7 +81,7 @@ defmodule Pleroma.Web.Websub.WebsubControllerTest do
 
       assert response(conn, 500) == "Error"
 
-      assert length(Repo.all(Activity)) == 0
+      assert Enum.empty?(Repo.all(Activity))
     end
   end
 end
diff --git a/test/web/websub/websub_test.exs b/test/web/websub/websub_test.exs
index 9751d161d..9a9b9df02 100644
--- a/test/web/websub/websub_test.exs
+++ b/test/web/websub/websub_test.exs
@@ -5,7 +5,8 @@
 defmodule Pleroma.Web.WebsubTest do
   use Pleroma.DataCase
   alias Pleroma.Web.Websub
-  alias Pleroma.Web.Websub.{WebsubServerSubscription, WebsubClientSubscription}
+  alias Pleroma.Web.Websub.WebsubServerSubscription
+  alias Pleroma.Web.Websub.WebsubClientSubscription
   import Pleroma.Factory
   alias Pleroma.Web.Router.Helpers
   import Tesla.Mock