[Housekeeping] Improve test stability (#232)

* Ensured all tests use at least the DataCase module

* addressed one flakey test

* More flakey tests

* Consolidated Mox usage

test/pinchflat_web/controllers/media_profile_controller_test.exs

@@ -1,7 +1,6 @@
 defmodule PinchflatWeb.MediaProfileControllerTest do
   use PinchflatWeb.ConnCase
 
-  import Mox
   import Pinchflat.MediaFixtures
   import Pinchflat.SourcesFixtures
   import Pinchflat.ProfilesFixtures
@@ -16,8 +15,6 @@ defmodule PinchflatWeb.MediaProfileControllerTest do
   }
   @invalid_attrs %{name: nil, output_path_template: nil}
 
-  setup :verify_on_exit!
-
   setup do
     Settings.set(onboarding: false)
 
@@ -41,7 +38,7 @@ defmodule PinchflatWeb.MediaProfileControllerTest do
       Settings.set(onboarding: true)
       conn = get(conn, ~p"/media_profiles/new")
 
-      refute html_response(conn, 200) =~ "MENU"
+      refute html_response(conn, 200) =~ "<span>MENU</span>"
     end
   end