test_number.py 文件源码

def test_exact_div(self):
        """Util.number.exact_div"""

        # Positive numbers
        self.assertEqual(1, number.exact_div(1, 1))
        self.assertRaises(ValueError, number.exact_div, 1, 2)
        self.assertEqual(1, number.exact_div(2, 2))
        self.assertRaises(ValueError, number.exact_div, 3, 2)
        self.assertEqual(2, number.exact_div(4, 2))

        # Negative numbers
        self.assertEqual(-1, number.exact_div(-1, 1))
        self.assertEqual(-1, number.exact_div(1, -1))
        self.assertRaises(ValueError, number.exact_div, -1, 2)
        self.assertEqual(1, number.exact_div(-2, -2))
        self.assertEqual(-2, number.exact_div(-4, 2))

        # Zero dividend
        self.assertEqual(0, number.exact_div(0, 1))
        self.assertEqual(0, number.exact_div(0, 2))

        # Zero divisor (allow_divzero == False)
        self.assertRaises(ZeroDivisionError, number.exact_div, 0, 0)
        self.assertRaises(ZeroDivisionError, number.exact_div, 1, 0)

        # Zero divisor (allow_divzero == True)
        self.assertEqual(0, number.exact_div(0, 0, allow_divzero=True))
        self.assertRaises(ValueError, number.exact_div, 1, 0, allow_divzero=True)