Fix most tests that call SearchIndexWorker.

test/mix/tasks/pleroma/digest_test.exs

@@ -23,6 +23,11 @@ defmodule Mix.Tasks.Pleroma.DigestTest do
 
   setup do: clear_config([Pleroma.Emails.Mailer, :enabled], true)
 
+  setup do
+    Mox.stub_with(Pleroma.UnstubbedConfigMock, Pleroma.Config)
+    :ok
+  end
+
   describe "pleroma.digest test" do
     test "Sends digest to the given user" do
       user1 = insert(:user)

test/mix/tasks/pleroma/user_test.exs

@@ -20,6 +20,11 @@ defmodule Mix.Tasks.Pleroma.UserTest do
   import Mock
   import Pleroma.Factory
 
+  setup do
+    Mox.stub_with(Pleroma.UnstubbedConfigMock, Pleroma.Config)
+    :ok
+  end
+
   setup_all do
     Mix.shell(Mix.Shell.Process)