def testAxisConstruction(self):
    axis = common.Axis()
    self.assertTrue(axis.min != None)
    self.assertTrue(axis.max is None)
    axis = common.Axis(-2, 16)
    self.assertEqual(axis.min, -2)
    self.assertEqual(axis.max, 16)
dataset/ETHPy150Open baz/app-sales-machine/lib/graphy/common_test.py/CommonTest.testAxisConstruction/operator `is` -> `!=`