`$this->createMock( User::class )` will return a mock User object
with all fields defaulting to null and this will fail when the
`onGetPreferences()` hook fires in CA since that gets consumed by
`getFormDescriptor()` in PreferencesFactory.
This patch changes the mock user object to a test user object and
this is fine because it's already an integration test.
Bug: T357854
Change-Id: I3d80fc1e59ff00a1a08def41c53d82bc093b6e00
Changes to the use statements done automatically via script
Addition of missing use statement done manually
Change-Id: I8fad94b215664fb77acf8cd8140232271d2c2837
It needs a database connection to create the user, which is unnecessary
here.
Depends-On: I80723b886b2b5a5d75cbb73571e1b19ea4a09af5
Change-Id: I260b8ca433733b7754616e6e24778935597981a5
