'Ensures that users are removed if they exist and exit cleanly otherwise.'

def test_remove(self):

    User.objects.create(username=TEST_USERNAME, email=TEST_EMAIL)
    self.assertEqual([(TEST_USERNAME, TEST_EMAIL)], [(u.username, u.email) for u in User.objects.all()])
    call_command('manage_user', TEST_USERNAME, TEST_EMAIL, '--remove')
    self.assertEqual([], list(User.objects.all()))
    call_command('manage_user', TEST_USERNAME, TEST_EMAIL, '--remove')
    self.assertEqual([], list(User.objects.all()))
