def test_supervisor_protected_method(self):
    self.assertIsNone(self.sample.protected(), 'Not raised on protected method')
    self.assertListEqual(self.supervisor.protected(), [1, 2, 3], 'Protected data do not match')
def test_supervisor_protected_method(self):
    self.assertIsNone(self.sample.protected(), 'Not raised on protected method')
    self.assertListEqual(self.supervisor.protected(), [1, 2, 3], 'Protected data do not match')