Fix flaky test: nil/wrong values passed

test/pleroma/web/activity_pub/activity_pub_test.exs

@@ -23,6 +23,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
   import Tesla.Mock
 
   setup do
+    clear_config([Pleroma.Upload, :uploader], Pleroma.Uploaders.Local)
+    clear_config([Pleroma.Uploaders.Local, :uploads], "uploads")
     mock(fn env -> apply(HttpRequestMock, :request, [env]) end)
     :ok
   end

test/pleroma/web/common_api_test.exs

@@ -27,6 +27,8 @@ defmodule Pleroma.Web.CommonAPITest do
   require Pleroma.Constants
 
   setup_all do
+    clear_config([Pleroma.Upload, :uploader], Pleroma.Uploaders.Local)
+    clear_config([Pleroma.Uploaders.Local, :uploads], "uploads")
     Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
     :ok
   end

test/pleroma/web/mastodon_api/controllers/media_controller_test.exs

@@ -13,6 +13,8 @@ defmodule Pleroma.Web.MastodonAPI.MediaControllerTest do
 
   describe "Upload media" do
     setup do: oauth_access(["write:media"])
+    setup do: clear_config([Pleroma.Upload, :uploader], Pleroma.Uploaders.Local)
+    setup do: clear_config([Pleroma.Uploaders.Local, :uploads], "uploads")
 
     setup do
       image = %Plug.Upload{

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

@@ -25,6 +25,8 @@ defmodule Pleroma.Web.MastodonAPI.StatusControllerTest do
   setup do: clear_config([:rich_media, :enabled])
   setup do: clear_config([:mrf, :policies])
   setup do: clear_config([:mrf_keyword, :reject])
+  setup do: clear_config([Pleroma.Upload, :uploader], Pleroma.Uploaders.Local)
+  setup do: clear_config([Pleroma.Uploaders.Local, :uploads], "uploads")
 
   describe "posting statuses" do
     setup do: oauth_access(["write:statuses"])

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

@@ -106,6 +106,9 @@ defmodule Pleroma.Web.PleromaAPI.ChatControllerTest do
     end
 
     test "it works with an attachment", %{conn: conn, user: user} do
+      clear_config([Pleroma.Upload, :uploader], Pleroma.Uploaders.Local)
+      clear_config([Pleroma.Uploaders.Local, :uploads], "uploads")
+
       file = %Plug.Upload{
         content_type: "image/jpeg",
         path: Path.absname("test/fixtures/image.jpg"),