def METHOD_NAME(self):
    """
    GIVEN:
        - Default settings
        - Email certificate is set
    WHEN:
        - Email certificate file doesn't exist
    THEN:
        - system check error reported for email certificate
    """
    self.assertIsNotFile("/tmp/not_actually_here.pem")
    msgs = settings_values_check(None)
    self.assertEqual(len(msgs), 1)
    msg = msgs[0]
    self.assertIn("Email cert /tmp/not_actually_here.pem is not a file", msg.msg)