Tests: Make as many tests as possible async.

In general, tests that match these criteria can be made async:

- Doesn't use real Cachex.
- Doesn't write to the Config / Application Environment.
- Uses Mock. Using Mox is fine.
- Uses the streamer.

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

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.ChatControllerTest do
-  use Pleroma.Web.ConnCase
+  use Pleroma.Web.ConnCase, async: true
 
   import Pleroma.Factory
 

test/pleroma/web/admin_api/controllers/report_controller_test.exs

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.ReportControllerTest do
-  use Pleroma.Web.ConnCase
+  use Pleroma.Web.ConnCase, async: true
 
   import Pleroma.Factory
 

test/pleroma/web/admin_api/controllers/status_controller_test.exs

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.StatusControllerTest do
-  use Pleroma.Web.ConnCase
+  use Pleroma.Web.ConnCase, async: true
 
   import Pleroma.Factory
 

test/pleroma/web/admin_api/search_test.exs

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.SearchTest do
-  use Pleroma.Web.ConnCase
+  use Pleroma.Web.ConnCase, async: true
 
   alias Pleroma.Web.AdminAPI.Search
 

test/pleroma/web/admin_api/views/moderation_log_view_test.exs

@@ -2,7 +2,7 @@
 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 defmodule Pleroma.Web.AdminAPI.ModerationLogViewTest do
-  use Pleroma.DataCase
+  use Pleroma.DataCase, async: true
 
   alias Pleroma.Web.AdminAPI.ModerationLogView
 

test/pleroma/web/admin_api/views/report_view_test.exs

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.ReportViewTest do
-  use Pleroma.DataCase
+  use Pleroma.DataCase, async: true
 
   import Pleroma.Factory