it works!!

test/web/thread_mute_test.exs

@@ -10,31 +10,32 @@ defmodule Pleroma.Web.ThreadMuteTest do
 
   describe "mute tests" do
     setup do
-      user = insert(:user, %{id: "1"})
+      user = insert(:user)
 
-      activity =
-        insert(:note_activity, %{
-          data: %{
-            "context" => "http://localhost:4000/contexts/361ca23e-ffa7-4773-b981-a355a18dc592"
-          }
-        })
+      activity = insert(:note_activity)
 
       [user: user, activity: activity]
     end
 
     test "add mute", %{user: user, activity: activity} do
       id = activity.id
-      {:ok, mute} = add_mute(user, id)
-
-      assert mute.user_id == "1"
-      assert mute.context == "http://localhost:4000/contexts/361ca23e-ffa7-4773-b981-a355a18dc592"
+      {:ok, _activity} = add_mute(user, id)
     end
 
     test "remove mute", %{user: user, activity: activity} do
       id = activity.id
 
       add_mute(user, id)
-      {1, nil} = remove_mute(user, id)
+      {:ok, _activity} = remove_mute(user, id)
+    end
+
+    test "check mute", %{user: user, activity: activity} do
+      id = activity.id
+
+      add_mute(user, id)
+      assert muted?(user, activity)
+      remove_mute(user, id)
+      refute muted?(user, activity)
     end
   end
 end