Merge branch 'align-mastodon-conversations' into 'develop'
[akkoma] / test / web / activity_pub / activity_pub_test.exs
index 91548ab5f1d2805ddfdc0f4df2db50bf2ff66027..76586ee4ada3977ea2d6d5bb665568d7377f8814 100644 (file)
@@ -1,23 +1,50 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
   use Pleroma.DataCase
+  alias Pleroma.Activity
+  alias Pleroma.Builders.ActivityBuilder
+  alias Pleroma.Instances
+  alias Pleroma.Object
+  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Publisher
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.CommonAPI
-  alias Pleroma.{Activity, Object, User}
-  alias Pleroma.Builders.ActivityBuilder
 
   import Pleroma.Factory
   import Tesla.Mock
+  import Mock
 
   setup do
     mock(fn env -> apply(HttpRequestMock, :request, [env]) end)
     :ok
   end
 
+  describe "streaming out participations" do
+    test "it streams them out" do
+      user = insert(:user)
+      {:ok, activity} = CommonAPI.post(user, %{"status" => ".", "visibility" => "direct"})
+
+      {:ok, conversation} = Pleroma.Conversation.create_or_bump_for(activity)
+
+      participations =
+        conversation.participations
+        |> Repo.preload(:user)
+
+      with_mock Pleroma.Web.Streamer,
+        stream: fn _, _ -> nil end do
+        ActivityPub.stream_out_participations(conversation.participations)
+
+        Enum.each(participations, fn participation ->
+          assert called(Pleroma.Web.Streamer.stream("participation", participation))
+        end)
+      end
+    end
+  end
+
   describe "fetching restricted by visibility" do
     test "it restricts by the appropriate visibility" do
       user = insert(:user)
@@ -51,6 +78,14 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
         ActivityPub.fetch_activities([], %{:visibility => "public", "actor_id" => user.ap_id})
 
       assert activities == [public_activity]
+
+      activities =
+        ActivityPub.fetch_activities([], %{
+          :visibility => ~w[private public],
+          "actor_id" => user.ap_id
+        })
+
+      assert activities == [public_activity, private_activity]
     end
   end
 
@@ -64,6 +99,38 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       assert user.info.ap_enabled
       assert user.follower_address == "http://mastodon.example.org/users/admin/followers"
     end
+
+    test "it fetches the appropriate tag-restricted posts" do
+      user = insert(:user)
+
+      {:ok, status_one} = CommonAPI.post(user, %{"status" => ". #test"})
+      {:ok, status_two} = CommonAPI.post(user, %{"status" => ". #essais"})
+      {:ok, status_three} = CommonAPI.post(user, %{"status" => ". #test #reject"})
+
+      fetch_one = ActivityPub.fetch_activities([], %{"type" => "Create", "tag" => "test"})
+
+      fetch_two =
+        ActivityPub.fetch_activities([], %{"type" => "Create", "tag" => ["test", "essais"]})
+
+      fetch_three =
+        ActivityPub.fetch_activities([], %{
+          "type" => "Create",
+          "tag" => ["test", "essais"],
+          "tag_reject" => ["reject"]
+        })
+
+      fetch_four =
+        ActivityPub.fetch_activities([], %{
+          "type" => "Create",
+          "tag" => ["test"],
+          "tag_all" => ["test", "reject"]
+        })
+
+      assert fetch_one == [status_one, status_three]
+      assert fetch_two == [status_one, status_two, status_three]
+      assert fetch_three == [status_one, status_two]
+      assert fetch_four == [status_three]
+    end
   end
 
   describe "insertion" do
@@ -86,9 +153,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     end
 
     test "doesn't drop activities with content being null" do
+      user = insert(:user)
+
       data = %{
-        "ok" => true,
+        "actor" => user.ap_id,
+        "to" => [],
         "object" => %{
+          "actor" => user.ap_id,
+          "to" => [],
+          "type" => "Note",
           "content" => nil
         }
       }
@@ -100,12 +173,21 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       activity = insert(:note_activity)
       {:ok, new_activity} = ActivityPub.insert(activity.data)
 
-      assert activity == new_activity
+      assert activity.id == new_activity.id
     end
 
     test "inserts a given map into the activity database, giving it an id if it has none." do
+      user = insert(:user)
+
       data = %{
-        "ok" => true
+        "actor" => user.ap_id,
+        "to" => [],
+        "object" => %{
+          "actor" => user.ap_id,
+          "to" => [],
+          "type" => "Note",
+          "content" => "hey"
+        }
       }
 
       {:ok, %Activity{} = activity} = ActivityPub.insert(data)
@@ -115,9 +197,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       given_id = "bla"
 
       data = %{
-        "ok" => true,
         "id" => given_id,
-        "context" => "blabla"
+        "actor" => user.ap_id,
+        "to" => [],
+        "context" => "blabla",
+        "object" => %{
+          "actor" => user.ap_id,
+          "to" => [],
+          "type" => "Note",
+          "content" => "hey"
+        }
       }
 
       {:ok, %Activity{} = activity} = ActivityPub.insert(data)
@@ -128,32 +217,47 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     end
 
     test "adds a context when none is there" do
+      user = insert(:user)
+
       data = %{
-        "id" => "some_id",
+        "actor" => user.ap_id,
+        "to" => [],
         "object" => %{
-          "id" => "object_id"
+          "actor" => user.ap_id,
+          "to" => [],
+          "type" => "Note",
+          "content" => "hey"
         }
       }
 
       {:ok, %Activity{} = activity} = ActivityPub.insert(data)
+      object = Pleroma.Object.normalize(activity)
 
       assert is_binary(activity.data["context"])
-      assert is_binary(activity.data["object"]["context"])
+      assert is_binary(object.data["context"])
       assert activity.data["context_id"]
-      assert activity.data["object"]["context_id"]
+      assert object.data["context_id"]
     end
 
     test "adds an id to a given object if it lacks one and is a note and inserts it to the object database" do
+      user = insert(:user)
+
       data = %{
+        "actor" => user.ap_id,
+        "to" => [],
         "object" => %{
+          "actor" => user.ap_id,
+          "to" => [],
           "type" => "Note",
-          "ok" => true
+          "content" => "hey"
         }
       }
 
       {:ok, %Activity{} = activity} = ActivityPub.insert(data)
-      assert is_binary(activity.data["object"]["id"])
-      assert %Object{} = Object.get_by_ap_id(activity.data["object"]["id"])
+      object = Object.normalize(activity.data["object"])
+
+      assert is_binary(object.data["id"])
+      assert %Object{} = Object.get_by_ap_id(activity.data["object"])
     end
   end
 
@@ -166,13 +270,77 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
           to: ["user1", "user1", "user2"],
           actor: user,
           context: "",
-          object: %{}
+          object: %{
+            "to" => ["user1", "user1", "user2"],
+            "type" => "Note",
+            "content" => "testing"
+          }
         })
 
       assert activity.data["to"] == ["user1", "user2"]
       assert activity.actor == user.ap_id
       assert activity.recipients == ["user1", "user2", user.ap_id]
     end
+
+    test "increases user note count only for public activities" do
+      user = insert(:user)
+
+      {:ok, _} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "1",
+          "visibility" => "public"
+        })
+
+      {:ok, _} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "2",
+          "visibility" => "unlisted"
+        })
+
+      {:ok, _} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "2",
+          "visibility" => "private"
+        })
+
+      {:ok, _} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "3",
+          "visibility" => "direct"
+        })
+
+      user = User.get_cached_by_id(user.id)
+      assert user.info.note_count == 2
+    end
+
+    test "increases replies count" do
+      user = insert(:user)
+      user2 = insert(:user)
+
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "1", "visibility" => "public"})
+      ap_id = activity.data["id"]
+      reply_data = %{"status" => "1", "in_reply_to_status_id" => activity.id}
+
+      # public
+      {:ok, _} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "public"))
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 1
+
+      # unlisted
+      {:ok, _} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "unlisted"))
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 2
+
+      # private
+      {:ok, _} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "private"))
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 2
+
+      # direct
+      {:ok, _} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "direct"))
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 2
+    end
   end
 
   describe "fetch activities for recipients" do
@@ -211,7 +379,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     booster = insert(:user)
     {:ok, user} = User.block(user, %{ap_id: activity_one.data["actor"]})
 
-    activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
 
     assert Enum.member?(activities, activity_two)
     assert Enum.member?(activities, activity_three)
@@ -219,7 +388,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
 
     {:ok, user} = User.unblock(user, %{ap_id: activity_one.data["actor"]})
 
-    activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
 
     assert Enum.member?(activities, activity_two)
     assert Enum.member?(activities, activity_three)
@@ -228,16 +398,143 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     {:ok, user} = User.block(user, %{ap_id: activity_three.data["actor"]})
     {:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.repeat(activity_three.id, booster)
     %Activity{} = boost_activity = Activity.get_create_by_object_ap_id(id)
-    activity_three = Repo.get(Activity, activity_three.id)
+    activity_three = Activity.get_by_id(activity_three.id)
+
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
+
+    assert Enum.member?(activities, activity_two)
+    refute Enum.member?(activities, activity_three)
+    refute Enum.member?(activities, boost_activity)
+    assert Enum.member?(activities, activity_one)
+
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => nil, "skip_preload" => true})
+
+    assert Enum.member?(activities, activity_two)
+    assert Enum.member?(activities, activity_three)
+    assert Enum.member?(activities, boost_activity)
+    assert Enum.member?(activities, activity_one)
+  end
+
+  test "doesn't return transitive interactions concerning blocked users" do
+    blocker = insert(:user)
+    blockee = insert(:user)
+    friend = insert(:user)
+
+    {:ok, blocker} = User.block(blocker, blockee)
+
+    {:ok, activity_one} = CommonAPI.post(friend, %{"status" => "hey!"})
+
+    {:ok, activity_two} = CommonAPI.post(friend, %{"status" => "hey! @#{blockee.nickname}"})
+
+    {:ok, activity_three} = CommonAPI.post(blockee, %{"status" => "hey! @#{friend.nickname}"})
+
+    {:ok, activity_four} = CommonAPI.post(blockee, %{"status" => "hey! @#{blocker.nickname}"})
+
+    activities = ActivityPub.fetch_activities([], %{"blocking_user" => blocker})
+
+    assert Enum.member?(activities, activity_one)
+    refute Enum.member?(activities, activity_two)
+    refute Enum.member?(activities, activity_three)
+    refute Enum.member?(activities, activity_four)
+  end
+
+  test "doesn't return announce activities concerning blocked users" do
+    blocker = insert(:user)
+    blockee = insert(:user)
+    friend = insert(:user)
+
+    {:ok, blocker} = User.block(blocker, blockee)
+
+    {:ok, activity_one} = CommonAPI.post(friend, %{"status" => "hey!"})
+
+    {:ok, activity_two} = CommonAPI.post(blockee, %{"status" => "hey! @#{friend.nickname}"})
+
+    {:ok, activity_three, _} = CommonAPI.repeat(activity_two.id, friend)
+
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => blocker})
+      |> Enum.map(fn act -> act.id end)
+
+    assert Enum.member?(activities, activity_one.id)
+    refute Enum.member?(activities, activity_two.id)
+    refute Enum.member?(activities, activity_three.id)
+  end
+
+  test "doesn't return activities from blocked domains" do
+    domain = "dogwhistle.zone"
+    domain_user = insert(:user, %{ap_id: "https://#{domain}/@pundit"})
+    note = insert(:note, %{data: %{"actor" => domain_user.ap_id}})
+    activity = insert(:note_activity, %{note: note})
+    user = insert(:user)
+    {:ok, user} = User.block_domain(user, domain)
+
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
+
+    refute activity in activities
+
+    followed_user = insert(:user)
+    ActivityPub.follow(user, followed_user)
+    {:ok, repeat_activity, _} = CommonAPI.repeat(activity.id, followed_user)
+
+    activities =
+      ActivityPub.fetch_activities([], %{"blocking_user" => user, "skip_preload" => true})
+
+    refute repeat_activity in activities
+  end
+
+  test "doesn't return muted activities" do
+    activity_one = insert(:note_activity)
+    activity_two = insert(:note_activity)
+    activity_three = insert(:note_activity)
+    user = insert(:user)
+    booster = insert(:user)
+    {:ok, user} = User.mute(user, %User{ap_id: activity_one.data["actor"]})
+
+    activities =
+      ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
+
+    assert Enum.member?(activities, activity_two)
+    assert Enum.member?(activities, activity_three)
+    refute Enum.member?(activities, activity_one)
+
+    # Calling with 'with_muted' will deliver muted activities, too.
+    activities =
+      ActivityPub.fetch_activities([], %{
+        "muting_user" => user,
+        "with_muted" => true,
+        "skip_preload" => true
+      })
+
+    assert Enum.member?(activities, activity_two)
+    assert Enum.member?(activities, activity_three)
+    assert Enum.member?(activities, activity_one)
+
+    {:ok, user} = User.unmute(user, %User{ap_id: activity_one.data["actor"]})
+
+    activities =
+      ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
+
+    assert Enum.member?(activities, activity_two)
+    assert Enum.member?(activities, activity_three)
+    assert Enum.member?(activities, activity_one)
+
+    {:ok, user} = User.mute(user, %User{ap_id: activity_three.data["actor"]})
+    {:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.repeat(activity_three.id, booster)
+    %Activity{} = boost_activity = Activity.get_create_by_object_ap_id(id)
+    activity_three = Activity.get_by_id(activity_three.id)
 
-    activities = ActivityPub.fetch_activities([], %{"blocking_user" => user})
+    activities =
+      ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
 
     assert Enum.member?(activities, activity_two)
     refute Enum.member?(activities, activity_three)
     refute Enum.member?(activities, boost_activity)
     assert Enum.member?(activities, activity_one)
 
-    activities = ActivityPub.fetch_activities([], %{"blocking_user" => nil})
+    activities = ActivityPub.fetch_activities([], %{"muting_user" => nil, "skip_preload" => true})
 
     assert Enum.member?(activities, activity_two)
     assert Enum.member?(activities, activity_three)
@@ -245,6 +542,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     assert Enum.member?(activities, activity_one)
   end
 
+  test "does include announces on request" do
+    activity_three = insert(:note_activity)
+    user = insert(:user)
+    booster = insert(:user)
+
+    {:ok, user} = User.follow(user, booster)
+
+    {:ok, announce, _object} = CommonAPI.repeat(activity_three.id, booster)
+
+    [announce_activity] = ActivityPub.fetch_activities([user.ap_id | user.following])
+
+    assert announce_activity.id == announce.id
+  end
+
   test "excludes reblogs on request" do
     user = insert(:user)
     {:ok, expected_activity} = ActivityBuilder.insert(%{"type" => "Create"}, %{:user => user})
@@ -316,6 +627,33 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       assert length(activities) == 20
       assert last == last_expected
     end
+
+    test "doesn't return reblogs for users for whom reblogs have been muted" do
+      activity = insert(:note_activity)
+      user = insert(:user)
+      booster = insert(:user)
+      {:ok, user} = CommonAPI.hide_reblogs(user, booster)
+
+      {:ok, activity, _} = CommonAPI.repeat(activity.id, booster)
+
+      activities = ActivityPub.fetch_activities([], %{"muting_user" => user})
+
+      refute Enum.any?(activities, fn %{id: id} -> id == activity.id end)
+    end
+
+    test "returns reblogs for users for whom reblogs have not been muted" do
+      activity = insert(:note_activity)
+      user = insert(:user)
+      booster = insert(:user)
+      {:ok, user} = CommonAPI.hide_reblogs(user, booster)
+      {:ok, user} = CommonAPI.show_reblogs(user, booster)
+
+      {:ok, activity, _} = CommonAPI.repeat(activity.id, booster)
+
+      activities = ActivityPub.fetch_activities([], %{"muting_user" => user})
+
+      assert Enum.any?(activities, fn %{id: id} -> id == activity.id end)
+    end
   end
 
   describe "like an object" do
@@ -365,7 +703,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       {:ok, _, _, object} = ActivityPub.unlike(user, object)
       assert object.data["like_count"] == 0
 
-      assert Repo.get(Activity, like_activity.id) == nil
+      assert Activity.get_by_id(like_activity.id) == nil
     end
   end
 
@@ -416,7 +754,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       assert unannounce_activity.data["actor"] == user.ap_id
       assert unannounce_activity.data["context"] == announce_activity.data["context"]
 
-      assert Repo.get(Activity, announce_activity.id) == nil
+      assert Activity.get_by_id(announce_activity.id) == nil
     end
   end
 
@@ -451,43 +789,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     end
   end
 
-  describe "fetching an object" do
-    test "it fetches an object" do
-      {:ok, object} =
-        ActivityPub.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
-
-      assert activity = Activity.get_create_by_object_ap_id(object.data["id"])
-      assert activity.data["id"]
-
-      {:ok, object_again} =
-        ActivityPub.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
-
-      assert [attachment] = object.data["attachment"]
-      assert is_list(attachment["url"])
-
-      assert object == object_again
-    end
-
-    test "it works with objects only available via Ostatus" do
-      {:ok, object} = ActivityPub.fetch_object_from_id("https://shitposter.club/notice/2827873")
-      assert activity = Activity.get_create_by_object_ap_id(object.data["id"])
-      assert activity.data["id"]
-
-      {:ok, object_again} =
-        ActivityPub.fetch_object_from_id("https://shitposter.club/notice/2827873")
-
-      assert object == object_again
-    end
-
-    test "it correctly stitches up conversations between ostatus and ap" do
-      last = "https://mstdn.io/users/mayuutann/statuses/99568293732299394"
-      {:ok, object} = ActivityPub.fetch_object_from_id(last)
-
-      object = Object.get_by_ap_id(object.data["inReplyTo"])
-      assert object
-    end
-  end
-
   describe "following / unfollowing" do
     test "creates a follow activity" do
       follower = insert(:user)
@@ -555,10 +856,97 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       assert delete.data["actor"] == note.data["actor"]
       assert delete.data["object"] == note.data["object"]["id"]
 
-      assert Repo.get(Activity, delete.id) != nil
+      assert Activity.get_by_id(delete.id) != nil
 
       assert Repo.get(Object, object.id).data["type"] == "Tombstone"
     end
+
+    test "decrements user note count only for public activities" do
+      user = insert(:user, info: %{note_count: 10})
+
+      {:ok, a1} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "yeah",
+          "visibility" => "public"
+        })
+
+      {:ok, a2} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "yeah",
+          "visibility" => "unlisted"
+        })
+
+      {:ok, a3} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "yeah",
+          "visibility" => "private"
+        })
+
+      {:ok, a4} =
+        CommonAPI.post(User.get_cached_by_id(user.id), %{
+          "status" => "yeah",
+          "visibility" => "direct"
+        })
+
+      {:ok, _} = Object.normalize(a1) |> ActivityPub.delete()
+      {:ok, _} = Object.normalize(a2) |> ActivityPub.delete()
+      {:ok, _} = Object.normalize(a3) |> ActivityPub.delete()
+      {:ok, _} = Object.normalize(a4) |> ActivityPub.delete()
+
+      user = User.get_cached_by_id(user.id)
+      assert user.info.note_count == 10
+    end
+
+    test "it creates a delete activity and checks that it is also sent to users mentioned by the deleted object" do
+      user = insert(:user)
+      note = insert(:note_activity)
+
+      {:ok, object} =
+        Object.get_by_ap_id(note.data["object"]["id"])
+        |> Object.change(%{
+          data: %{
+            "actor" => note.data["object"]["actor"],
+            "id" => note.data["object"]["id"],
+            "to" => [user.ap_id],
+            "type" => "Note"
+          }
+        })
+        |> Object.update_and_set_cache()
+
+      {:ok, delete} = ActivityPub.delete(object)
+
+      assert user.ap_id in delete.data["to"]
+    end
+
+    test "decreases reply count" do
+      user = insert(:user)
+      user2 = insert(:user)
+
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "1", "visibility" => "public"})
+      reply_data = %{"status" => "1", "in_reply_to_status_id" => activity.id}
+      ap_id = activity.data["id"]
+
+      {:ok, public_reply} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "public"))
+      {:ok, unlisted_reply} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "unlisted"))
+      {:ok, private_reply} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "private"))
+      {:ok, direct_reply} = CommonAPI.post(user2, Map.put(reply_data, "visibility", "direct"))
+
+      _ = CommonAPI.delete(direct_reply.id, user2)
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 2
+
+      _ = CommonAPI.delete(private_reply.id, user2)
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 2
+
+      _ = CommonAPI.delete(public_reply.id, user2)
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 1
+
+      _ = CommonAPI.delete(unlisted_reply.id, user2)
+      assert %{data: data, object: object} = Activity.get_by_ap_id_with_object(ap_id)
+      assert object.data["repliesCount"] == 0
+    end
   end
 
   describe "timeline post-processing" do
@@ -595,33 +983,29 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
           "in_reply_to_status_id" => private_activity_2.id
         })
 
-      assert user1.following == [user3.ap_id <> "/followers", user1.ap_id]
+      activities =
+        ActivityPub.fetch_activities([user1.ap_id | user1.following])
+        |> Enum.map(fn a -> a.id end)
+
+      private_activity_1 = Activity.get_by_ap_id_with_object(private_activity_1.data["id"])
 
-      activities = ActivityPub.fetch_activities([user1.ap_id | user1.following])
+      assert [public_activity.id, private_activity_1.id, private_activity_3.id] == activities
 
-      assert [public_activity, private_activity_1, private_activity_3] == activities
       assert length(activities) == 3
 
-      activities = ActivityPub.contain_timeline(activities, user1)
+      activities =
+        ActivityPub.fetch_activities([user1.ap_id | user1.following], %{"user" => user1})
+        |> Enum.map(fn a -> a.id end)
 
-      assert [public_activity, private_activity_1] == activities
+      assert [public_activity.id, private_activity_1.id] == activities
       assert length(activities) == 2
     end
   end
 
-  test "it can fetch plume articles" do
-    {:ok, object} =
-      ActivityPub.fetch_object_from_id(
-        "https://baptiste.gelez.xyz/~/PlumeDevelopment/this-month-in-plume-june-2018/"
-      )
-
-    assert object
-  end
-
   describe "update" do
     test "it creates an update activity with the new user data" do
       user = insert(:user)
-      {:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
+      {:ok, user} = User.ensure_keys_present(user)
       user_data = Pleroma.Web.ActivityPub.UserView.render("user.json", %{user: user})
 
       {:ok, update} =
@@ -639,15 +1023,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     end
   end
 
-  test "it can fetch peertube videos" do
-    {:ok, object} =
-      ActivityPub.fetch_object_from_id(
-        "https://peertube.moe/videos/watch/df5f464b-be8d-46fb-ad81-2d4c2d1630e3"
-      )
-
-    assert object
-  end
-
   test "returned pinned statuses" do
     Pleroma.Config.put([:instance, :max_pinned_statuses], 3)
     user = insert(:user)
@@ -670,7 +1045,174 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     assert 3 = length(activities)
   end
 
+  test "it can create a Flag activity" do
+    reporter = insert(:user)
+    target_account = insert(:user)
+    {:ok, activity} = CommonAPI.post(target_account, %{"status" => "foobar"})
+    context = Utils.generate_context_id()
+    content = "foobar"
+
+    reporter_ap_id = reporter.ap_id
+    target_ap_id = target_account.ap_id
+    activity_ap_id = activity.data["id"]
+
+    assert {:ok, activity} =
+             ActivityPub.flag(%{
+               actor: reporter,
+               context: context,
+               account: target_account,
+               statuses: [activity],
+               content: content
+             })
+
+    assert %Activity{
+             actor: ^reporter_ap_id,
+             data: %{
+               "type" => "Flag",
+               "content" => ^content,
+               "context" => ^context,
+               "object" => [^target_ap_id, ^activity_ap_id]
+             }
+           } = activity
+  end
+
+  describe "publish_one/1" do
+    test_with_mock "calls `Instances.set_reachable` on successful federation if `unreachable_since` is not specified",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://200.site/users/nick1/inbox"
+
+      assert {:ok, _} = Publisher.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})
+
+      assert called(Instances.set_reachable(inbox))
+    end
+
+    test_with_mock "calls `Instances.set_reachable` on successful federation if `unreachable_since` is set",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://200.site/users/nick1/inbox"
+
+      assert {:ok, _} =
+               Publisher.publish_one(%{
+                 inbox: inbox,
+                 json: "{}",
+                 actor: actor,
+                 id: 1,
+                 unreachable_since: NaiveDateTime.utc_now()
+               })
+
+      assert called(Instances.set_reachable(inbox))
+    end
+
+    test_with_mock "does NOT call `Instances.set_reachable` on successful federation if `unreachable_since` is nil",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://200.site/users/nick1/inbox"
+
+      assert {:ok, _} =
+               Publisher.publish_one(%{
+                 inbox: inbox,
+                 json: "{}",
+                 actor: actor,
+                 id: 1,
+                 unreachable_since: nil
+               })
+
+      refute called(Instances.set_reachable(inbox))
+    end
+
+    test_with_mock "calls `Instances.set_unreachable` on target inbox on non-2xx HTTP response code",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://404.site/users/nick1/inbox"
+
+      assert {:error, _} = Publisher.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})
+
+      assert called(Instances.set_unreachable(inbox))
+    end
+
+    test_with_mock "it calls `Instances.set_unreachable` on target inbox on request error of any kind",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://connrefused.site/users/nick1/inbox"
+
+      assert {:error, _} = Publisher.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})
+
+      assert called(Instances.set_unreachable(inbox))
+    end
+
+    test_with_mock "does NOT call `Instances.set_unreachable` if target is reachable",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://200.site/users/nick1/inbox"
+
+      assert {:ok, _} = Publisher.publish_one(%{inbox: inbox, json: "{}", actor: actor, id: 1})
+
+      refute called(Instances.set_unreachable(inbox))
+    end
+
+    test_with_mock "does NOT call `Instances.set_unreachable` if target instance has non-nil `unreachable_since`",
+                   Instances,
+                   [:passthrough],
+                   [] do
+      actor = insert(:user)
+      inbox = "http://connrefused.site/users/nick1/inbox"
+
+      assert {:error, _} =
+               Publisher.publish_one(%{
+                 inbox: inbox,
+                 json: "{}",
+                 actor: actor,
+                 id: 1,
+                 unreachable_since: NaiveDateTime.utc_now()
+               })
+
+      refute called(Instances.set_unreachable(inbox))
+    end
+  end
+
   def data_uri do
     File.read!("test/fixtures/avatar_data_uri")
   end
+
+  describe "fetch_activities_bounded" do
+    test "fetches private posts for followed users" do
+      user = insert(:user)
+
+      {:ok, activity} =
+        CommonAPI.post(user, %{
+          "status" => "thought I looked cute might delete later :3",
+          "visibility" => "private"
+        })
+
+      [result] = ActivityPub.fetch_activities_bounded([user.follower_address], [])
+      assert result.id == activity.id
+    end
+
+    test "fetches only public posts for other users" do
+      user = insert(:user)
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "#cofe", "visibility" => "public"})
+
+      {:ok, _private_activity} =
+        CommonAPI.post(user, %{
+          "status" => "why is tenshi eating a corndog so cute?",
+          "visibility" => "private"
+        })
+
+      [result] = ActivityPub.fetch_activities_bounded([], [user.follower_address])
+      assert result.id == activity.id
+    end
+  end
 end