Tests: Add a helper method to reduce sleeping times in test.

This will 'time travel', i.e. change the inserted_at and update_at
fields of the object in question. This is used to backdate things
were we used sleeping before to ensure time differences.

test/pleroma/chat_test.exs

@@ -73,7 +73,8 @@ test "a returning chat will have an updated `update_at` field" do
       other_user = insert(:user)
 
       {:ok, chat} = Chat.bump_or_create(user.id, other_user.ap_id)
-      :timer.sleep(1500)
+      {:ok, chat} = time_travel(chat, -2)
+
       {:ok, chat_two} = Chat.bump_or_create(user.id, other_user.ap_id)
 
       assert chat.id == chat_two.id

test/pleroma/conversation/participation_test.exs

@@ -96,12 +96,11 @@ test "it creates a participation for a conversation and a user" do
     {:ok, %Participation{} = participation} =
       Participation.create_for_user_and_conversation(user, conversation)
 
+    {:ok, participation} = time_travel(participation, -2)
+
     assert participation.user_id == user.id
     assert participation.conversation_id == conversation.id
 
-    # Needed because updated_at is accurate down to a second
-    :timer.sleep(1000)
-
     # Creating again returns the same participation
     {:ok, %Participation{} = participation_two} =
       Participation.create_for_user_and_conversation(user, conversation)

test/pleroma/web/pleroma_api/controllers/chat_controller_test.exs

@@ -394,11 +394,11 @@ test "it return a list of chats the current user is participating in, in descend
       tridi = insert(:user)
 
       {:ok, chat_1} = Chat.get_or_create(user.id, har.ap_id)
-      :timer.sleep(1000)
-      {:ok, _chat_2} = Chat.get_or_create(user.id, jafnhar.ap_id)
-      :timer.sleep(1000)
+      {:ok, chat_1} = time_travel(chat_1, -3)
+      {:ok, chat_2} = Chat.get_or_create(user.id, jafnhar.ap_id)
+      {:ok, _chat_2} = time_travel(chat_2, -2)
       {:ok, chat_3} = Chat.get_or_create(user.id, tridi.ap_id)
-      :timer.sleep(1000)
+      {:ok, chat_3} = time_travel(chat_3, -1)
 
       # bump the second one
       {:ok, chat_2} = Chat.bump_or_create(user.id, jafnhar.ap_id)

test/pleroma/web/twitter_api/password_controller_test.exs

@@ -37,8 +37,7 @@ test "it returns an error when the token has expired", %{conn: conn} do
 
       user = insert(:user)
       {:ok, token} = PasswordResetToken.create_token(user)
-
-      :timer.sleep(2000)
+      {:ok, token} = time_travel(token, -2)
 
       response =
         conn
@@ -55,7 +54,7 @@ test "it fails for an expired token", %{conn: conn} do
 
       user = insert(:user)
       {:ok, token} = PasswordResetToken.create_token(user)
-      :timer.sleep(2000)
+      {:ok, token} = time_travel(token, -2)
       {:ok, _access_token} = Token.create(insert(:oauth_app), user, %{})
 
       params = %{

test/support/helpers.ex

@@ -55,6 +55,14 @@ defmacro __using__(_opts) do
           clear_config: 2
         ]
 
+      def time_travel(entity, seconds) do
+        new_time = NaiveDateTime.add(entity.inserted_at, seconds)
+
+        entity
+        |> Ecto.Changeset.change(%{inserted_at: new_time, updated_at: new_time})
+        |> Pleroma.Repo.update()
+      end
+
       def to_datetime(%NaiveDateTime{} = naive_datetime) do
         naive_datetime
         |> DateTime.from_naive!("Etc/UTC")