don't use global mocks in setup callbacks

test/activity_test.exs

@@ -11,6 +11,11 @@ defmodule Pleroma.ActivityTest do
   alias Pleroma.ThreadMute
   import Pleroma.Factory
 
+  setup_all do
+    Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
+    :ok
+  end
+
   test "returns an activity by it's AP id" do
     activity = insert(:note_activity)
     found_activity = Activity.get_by_ap_id(activity.data["id"])
@@ -107,8 +112,6 @@ test "when association is not loaded" do
 
   describe "search" do
     setup do
-      Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
-
       user = insert(:user)
 
       params = %{

test/web/mastodon_api/controllers/search_controller_test.exs

@@ -13,7 +13,7 @@ defmodule Pleroma.Web.MastodonAPI.SearchControllerTest do
   import Tesla.Mock
   import Mock
 
-  setup do
+  setup_all do
     mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
     :ok
   end

test/web/push/impl_test.exs

@@ -13,8 +13,8 @@ defmodule Pleroma.Web.Push.ImplTest do
 
   import Pleroma.Factory
 
-  setup_all do
-    Tesla.Mock.mock_global(fn
+  setup do
+    Tesla.Mock.mock(fn
       %{method: :post, url: "https://example.com/example/1234"} ->
         %Tesla.Env{status: 200}