added tests for ActivityPub.like\unlike

lib/pleroma/activity/queries.ex

@@ -0,0 +1,49 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Activity.Queries do
+  @moduledoc """
+  Contains queries for Activity.
+  """
+
+  import Ecto.Query, only: [from: 2]
+
+  @type query :: Ecto.Queryable.t() | Activity.t()
+
+  alias Pleroma.Activity
+
+  @spec by_actor(query, String.t()) :: query
+  def by_actor(query \\ Activity, actor) do
+    from(
+      activity in query,
+      where: fragment("(?)->>'actor' = ?", activity.data, ^actor)
+    )
+  end
+
+  @spec by_object_id(query, String.t()) :: query
+  def by_object_id(query \\ Activity, object_id) do
+    from(activity in query,
+      where:
+        fragment(
+          "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
+          activity.data,
+          activity.data,
+          ^object_id
+        )
+    )
+  end
+
+  @spec by_type(query, String.t()) :: query
+  def by_type(query \\ Activity, activity_type) do
+    from(
+      activity in query,
+      where: fragment("(?)->>'type' = ?", activity.data, ^activity_type)
+    )
+  end
+
+  @spec limit(query, pos_integer()) :: query
+  def limit(query \\ Activity, limit) do
+    from(activity in query, limit: ^limit)
+  end
+end

lib/pleroma/object.ex

@@ -150,8 +150,6 @@ defmodule Pleroma.Object do
   def update_and_set_cache(changeset) do
     with {:ok, object} <- Repo.update(changeset) do
       set_cache(object)
-    else
-      e -> e
     end
   end
 

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -139,7 +139,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
       # Splice in the child object if we have one.
       activity =
-        if !is_nil(object) do
+        if not is_nil(object) do
           Map.put(activity, :object, object)
         else
           activity
@@ -331,12 +331,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def unlike(
-        %User{} = actor,
-        %Object{} = object,
-        activity_id \\ nil,
-        local \\ true
-      ) do
+  def unlike(%User{} = actor, %Object{} = object, activity_id \\ nil, local \\ true) do
     with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
          unlike_data <- make_unlike_data(actor, like_activity, activity_id),
          {:ok, unlike_activity} <- insert(unlike_data, local),

lib/pleroma/web/activity_pub/activity_pub_controller.ex

@@ -309,42 +309,43 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
   end
 
   def update_outbox(
-        %{assigns: %{user: user}} = conn,
+        %{assigns: %{user: %User{nickname: user_nickname} = user}} = conn,
         %{"nickname" => nickname} = params
-      ) do
-    if nickname == user.nickname do
-      actor = user.ap_id()
+      )
+      when user_nickname == nickname do
+    actor = user.ap_id()
 
-      params =
-        params
-        |> Map.drop(["id"])
-        |> Map.put("actor", actor)
-        |> Transmogrifier.fix_addressing()
-
-      with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
-        conn
-        |> put_status(:created)
-        |> put_resp_header("location", activity.data["id"])
-        |> json(activity.data)
-      else
-        {:error, message} ->
-          conn
-          |> put_status(:bad_request)
-          |> json(message)
-      end
-    else
-      err =
-        dgettext("errors", "can't update outbox of %{nickname} as %{as_nickname}",
-          nickname: nickname,
-          as_nickname: user.nickname
-        )
+    params =
+      params
+      |> Map.drop(["id"])
+      |> Map.put("actor", actor)
+      |> Transmogrifier.fix_addressing()
 
+    with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
       conn
-      |> put_status(:forbidden)
-      |> json(err)
+      |> put_status(:created)
+      |> put_resp_header("location", activity.data["id"])
+      |> json(activity.data)
+    else
+      {:error, message} ->
+        conn
+        |> put_status(:bad_request)
+        |> json(message)
     end
   end
 
+  def update_outbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = _) do
+    err =
+      dgettext("errors", "can't update outbox of %{nickname} as %{as_nickname}",
+        nickname: nickname,
+        as_nickname: user.nickname
+      )
+
+    conn
+    |> put_status(:forbidden)
+    |> json(err)
+  end
+
   def errors(conn, {:error, :not_found}) do
     conn
     |> put_status(:not_found)

lib/pleroma/web/activity_pub/utils.ex

@@ -166,6 +166,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Enqueues an activity for federation if it's local
   """
+  @spec maybe_federate(any()) :: :ok
   def maybe_federate(%Activity{local: true} = activity) do
     if Pleroma.Config.get!([:instance, :federating]) do
       priority =
@@ -256,46 +257,27 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Returns an existing like if a user already liked an object
   """
+  @spec get_existing_like(String.t(), map()) :: Activity.t() | nil
   def get_existing_like(actor, %{data: %{"id" => id}}) do
-    query =
-      from(
-        activity in Activity,
-        where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
-        # this is to use the index
-        where:
-          fragment(
-            "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-            activity.data,
-            activity.data,
-            ^id
-          ),
-        where: fragment("(?)->>'type' = 'Like'", activity.data)
-      )
-
-    Repo.one(query)
+    actor
+    |> Activity.Queries.by_actor()
+    |> Activity.Queries.by_object_id(id)
+    |> Activity.Queries.by_type("Like")
+    |> Activity.Queries.limit(1)
+    |> Repo.one()
   end
 
   @doc """
   Returns like activities targeting an object
   """
   def get_object_likes(%{data: %{"id" => id}}) do
-    query =
-      from(
-        activity in Activity,
-        # this is to use the index
-        where:
-          fragment(
-            "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
-            activity.data,
-            activity.data,
-            ^id
-          ),
-        where: fragment("(?)->>'type' = 'Like'", activity.data)
-      )
-
-    Repo.all(query)
+    id
+    |> Activity.Queries.by_object_id()
+    |> Activity.Queries.by_type("Like")
+    |> Repo.all()
   end
 
+  @spec make_like_data(User.t(), map(), String.t()) :: map()
   def make_like_data(
         %User{ap_id: ap_id} = actor,
         %{data: %{"actor" => object_actor_id, "id" => id}} = object,
@@ -315,7 +297,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       |> List.delete(actor.ap_id)
       |> List.delete(object_actor.follower_address)
 
-    data = %{
+    %{
       "type" => "Like",
       "actor" => ap_id,
       "object" => id,
@@ -323,38 +305,49 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "cc" => cc,
       "context" => object.data["context"]
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
+  @spec update_element_in_object(String.t(), list(any), Object.t()) ::
+          {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
   def update_element_in_object(property, element, object) do
-    with new_data <-
-           object.data
-           |> Map.put("#{property}_count", length(element))
-           |> Map.put("#{property}s", element),
-         changeset <- Changeset.change(object, data: new_data),
-         {:ok, object} <- Object.update_and_set_cache(changeset) do
-      {:ok, object}
-    end
+    data =
+      Map.merge(
+        object.data,
+        %{"#{property}_count" => length(element), "#{property}s" => element}
+      )
+
+    object
+    |> Changeset.change(data: data)
+    |> Object.update_and_set_cache()
   end
 
-  def update_likes_in_object(likes, object) do
+  @spec add_like_to_object(Activity.t(), Object.t()) ::
+          {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
+  def add_like_to_object(%Activity{data: %{"actor" => actor}}, object) do
+    [actor | fetch_likes(object)]
+    |> Enum.uniq()
+    |> update_likes_in_object(object)
+  end
+
+  @spec remove_like_from_object(Activity.t(), Object.t()) ::
+          {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
+  def remove_like_from_object(%Activity{data: %{"actor" => actor}}, object) do
+    object
+    |> fetch_likes()
+    |> List.delete(actor)
+    |> update_likes_in_object(object)
+  end
+
+  defp update_likes_in_object(likes, object) do
     update_element_in_object("like", likes, object)
   end
 
-  def add_like_to_object(%Activity{data: %{"actor" => actor}}, object) do
-    likes = if is_list(object.data["likes"]), do: object.data["likes"], else: []
-
-    with likes <- [actor | likes] |> Enum.uniq() do
-      update_likes_in_object(likes, object)
-    end
-  end
-
-  def remove_like_from_object(%Activity{data: %{"actor" => actor}}, object) do
-    likes = if is_list(object.data["likes"]), do: object.data["likes"], else: []
-
-    with likes <- likes |> List.delete(actor) do
-      update_likes_in_object(likes, object)
+  defp fetch_likes(object) do
+    if is_list(object.data["likes"]) do
+      object.data["likes"]
+    else
+      []
     end
   end
 
@@ -405,7 +398,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         %User{ap_id: followed_id} = _followed,
         activity_id
       ) do
-    data = %{
+    %{
       "type" => "Follow",
       "actor" => follower_id,
       "to" => [followed_id],
@@ -413,10 +406,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "object" => followed_id,
       "state" => "pending"
     }
-
-    data = if activity_id, do: Map.put(data, "id", activity_id), else: data
-
-    data
+    |> maybe_put("id", activity_id)
   end
 
   def fetch_latest_follow(%User{ap_id: follower_id}, %User{ap_id: followed_id}) do
@@ -478,7 +468,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         activity_id,
         false
       ) do
-    data = %{
+    %{
       "type" => "Announce",
       "actor" => ap_id,
       "object" => id,
@@ -486,8 +476,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "cc" => [],
       "context" => object.data["context"]
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   def make_announce_data(
@@ -496,7 +485,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         activity_id,
         true
       ) do
-    data = %{
+    %{
       "type" => "Announce",
       "actor" => ap_id,
       "object" => id,
@@ -504,8 +493,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "cc" => [Pleroma.Constants.as_public()],
       "context" => object.data["context"]
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   @doc """
@@ -516,7 +504,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         %Activity{data: %{"context" => context}} = activity,
         activity_id
       ) do
-    data = %{
+    %{
       "type" => "Undo",
       "actor" => ap_id,
       "object" => activity.data,
@@ -524,8 +512,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "cc" => [Pleroma.Constants.as_public()],
       "context" => context
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   def make_unlike_data(
@@ -533,7 +520,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         %Activity{data: %{"context" => context}} = activity,
         activity_id
       ) do
-    data = %{
+    %{
       "type" => "Undo",
       "actor" => ap_id,
       "object" => activity.data,
@@ -541,8 +528,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "cc" => [Pleroma.Constants.as_public()],
       "context" => context
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   def add_announce_to_object(
@@ -573,14 +559,13 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   #### Unfollow-related helpers
 
   def make_unfollow_data(follower, followed, follow_activity, activity_id) do
-    data = %{
+    %{
       "type" => "Undo",
       "actor" => follower.ap_id,
       "to" => [followed.ap_id],
       "object" => follow_activity.data
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   #### Block-related helpers
@@ -610,25 +595,23 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   end
 
   def make_block_data(blocker, blocked, activity_id) do
-    data = %{
+    %{
       "type" => "Block",
       "actor" => blocker.ap_id,
       "to" => [blocked.ap_id],
       "object" => blocked.ap_id
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   def make_unblock_data(blocker, blocked, block_activity, activity_id) do
-    data = %{
+    %{
       "type" => "Undo",
       "actor" => blocker.ap_id,
       "to" => [blocked.ap_id],
       "object" => block_activity.data
     }
-
-    if activity_id, do: Map.put(data, "id", activity_id), else: data
+    |> maybe_put("id", activity_id)
   end
 
   #### Create-related helpers
@@ -799,4 +782,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
 
     Repo.all(query)
   end
+
+  defp maybe_put(map, _key, nil), do: map
+  defp maybe_put(map, key, value), do: Map.put(map, key, value)
 end

test/support/factory.ex

@@ -207,13 +207,15 @@ defmodule Pleroma.Factory do
     object = Object.normalize(note_activity)
     user = insert(:user)
 
-    data = %{
-      "id" => Pleroma.Web.ActivityPub.Utils.generate_activity_id(),
-      "actor" => user.ap_id,
-      "type" => "Like",
-      "object" => object.data["id"],
-      "published_at" => DateTime.utc_now() |> DateTime.to_iso8601()
-    }
+    data =
+      %{
+        "id" => Pleroma.Web.ActivityPub.Utils.generate_activity_id(),
+        "actor" => user.ap_id,
+        "type" => "Like",
+        "object" => object.data["id"],
+        "published_at" => DateTime.utc_now() |> DateTime.to_iso8601()
+      }
+      |> Map.merge(attrs[:data_attrs] || %{})
 
     %Pleroma.Activity{
       data: data

test/web/activity_pub/activity_pub_test.exs

@@ -21,6 +21,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     :ok
   end
 
+  clear_config([:instance, :federating])
+
   describe "streaming out participations" do
     test "it streams them out" do
       user = insert(:user)
@@ -676,6 +678,29 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
   end
 
   describe "like an object" do
+    test_with_mock "sends an activity to federation", Pleroma.Web.Federator, [:passthrough], [] do
+      Pleroma.Config.put([:instance, :federating], true)
+      note_activity = insert(:note_activity)
+      assert object_activity = Object.normalize(note_activity)
+
+      user = insert(:user)
+
+      {:ok, like_activity, _object} = ActivityPub.like(user, object_activity)
+      assert called(Pleroma.Web.Federator.publish(like_activity, 5))
+    end
+
+    test "returns exist activity if object already liked" do
+      note_activity = insert(:note_activity)
+      assert object_activity = Object.normalize(note_activity)
+
+      user = insert(:user)
+
+      {:ok, like_activity, _object} = ActivityPub.like(user, object_activity)
+
+      {:ok, like_activity_exist, _object} = ActivityPub.like(user, object_activity)
+      assert like_activity == like_activity_exist
+    end
+
     test "adds a like activity to the db" do
       note_activity = insert(:note_activity)
       assert object = Object.normalize(note_activity)
@@ -706,6 +731,25 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
   end
 
   describe "unliking" do
+    test_with_mock "sends an activity to federation", Pleroma.Web.Federator, [:passthrough], [] do
+      Pleroma.Config.put([:instance, :federating], true)
+
+      note_activity = insert(:note_activity)
+      object = Object.normalize(note_activity)
+      user = insert(:user)
+
+      {:ok, object} = ActivityPub.unlike(user, object)
+      refute called(Pleroma.Web.Federator.publish())
+
+      {:ok, _like_activity, object} = ActivityPub.like(user, object)
+      assert object.data["like_count"] == 1
+
+      {:ok, unlike_activity, _, object} = ActivityPub.unlike(user, object)
+      assert object.data["like_count"] == 0
+
+      assert called(Pleroma.Web.Federator.publish(unlike_activity, 5))
+    end
+
     test "unliking a previously liked object" do
       note_activity = insert(:note_activity)
       object = Object.normalize(note_activity)

test/web/activity_pub/utils_test.exs

@@ -14,6 +14,8 @@ defmodule Pleroma.Web.ActivityPub.UtilsTest do
 
   import Pleroma.Factory
 
+  require Pleroma.Constants
+
   describe "fetch the latest Follow" do
     test "fetches the latest Follow activity" do
       %Activity{data: %{"type" => "Follow"}} = activity = insert(:follow_activity)
@@ -87,6 +89,32 @@ defmodule Pleroma.Web.ActivityPub.UtilsTest do
     end
   end
 
+  describe "make_unlike_data/3" do
+    test "returns data for unlike activity" do
+      user = insert(:user)
+      like_activity = insert(:like_activity, data_attrs: %{"context" => "test context"})
+
+      assert Utils.make_unlike_data(user, like_activity, nil) == %{
+               "type" => "Undo",
+               "actor" => user.ap_id,
+               "object" => like_activity.data,
+               "to" => [user.follower_address, like_activity.data["actor"]],
+               "cc" => [Pleroma.Constants.as_public()],
+               "context" => like_activity.data["context"]
+             }
+
+      assert Utils.make_unlike_data(user, like_activity, "9mJEZK0tky1w2xD2vY") == %{
+               "type" => "Undo",
+               "actor" => user.ap_id,
+               "object" => like_activity.data,
+               "to" => [user.follower_address, like_activity.data["actor"]],
+               "cc" => [Pleroma.Constants.as_public()],
+               "context" => like_activity.data["context"],
+               "id" => "9mJEZK0tky1w2xD2vY"
+             }
+    end
+  end
+
   describe "make_like_data" do
     setup do
       user = insert(:user)
@@ -299,4 +327,78 @@ defmodule Pleroma.Web.ActivityPub.UtilsTest do
       assert Repo.get(Activity, follow_activity_two.id).data["state"] == "reject"
     end
   end
+
+  describe "update_element_in_object/3" do
+    test "updates likes" do
+      user = insert(:user)
+      activity = insert(:note_activity)
+      object = Object.normalize(activity)
+
+      assert {:ok, updated_object} =
+               Utils.update_element_in_object(
+                 "like",
+                 [user.ap_id],
+                 object
+               )
+
+      assert updated_object.data["likes"] == [user.ap_id]
+      assert updated_object.data["like_count"] == 1
+    end
+  end
+
+  describe "add_like_to_object/2" do
+    test "add actor to likes" do
+      user = insert(:user)
+      user2 = insert(:user)
+      object = insert(:note)
+
+      assert {:ok, updated_object} =
+               Utils.add_like_to_object(
+                 %Activity{data: %{"actor" => user.ap_id}},
+                 object
+               )
+
+      assert updated_object.data["likes"] == [user.ap_id]
+      assert updated_object.data["like_count"] == 1
+
+      assert {:ok, updated_object2} =
+               Utils.add_like_to_object(
+                 %Activity{data: %{"actor" => user2.ap_id}},
+                 updated_object
+               )
+
+      assert updated_object2.data["likes"] == [user2.ap_id, user.ap_id]
+      assert updated_object2.data["like_count"] == 2
+    end
+  end
+
+  describe "remove_like_from_object/2" do
+    test "removes ap_id from likes" do
+      user = insert(:user)
+      user2 = insert(:user)
+      object = insert(:note, data: %{"likes" => [user.ap_id, user2.ap_id], "like_count" => 2})
+
+      assert {:ok, updated_object} =
+               Utils.remove_like_from_object(
+                 %Activity{data: %{"actor" => user.ap_id}},
+                 object
+               )
+
+      assert updated_object.data["likes"] == [user2.ap_id]
+      assert updated_object.data["like_count"] == 1
+    end
+  end
+
+  describe "get_existing_like/2" do
+    test "fetches existing like" do
+      note_activity = insert(:note_activity)
+      assert object = Object.normalize(note_activity)
+
+      user = insert(:user)
+      refute Utils.get_existing_like(user.ap_id, object)
+      {:ok, like_activity, _object} = ActivityPub.like(user, object)
+
+      assert ^like_activity = Utils.get_existing_like(user.ap_id, object)
+    end
+  end
 end