def METHOD_NAME(self):
    kClosed = True
    interval = Intervald(0., kClosed, 1., not kClosed)
    self.assertAlmostEqual(interval.left_value(), 0.)
    self.assertTrue(interval.is_left_closed())
    self.assertAlmostEqual(interval.right_value(), 1.)
    self.assertFalse(interval.is_right_closed())