コード例 #1
0
ファイル: operations_test.py プロジェクト: jwg4/bytesize
    def testRMethods(self):
        """ Test certain r* methods. These methods must be invoked
            explicitly, rather than by means of an operator, in order
            to be executed. Otherwise, their companion non-R method
            will be invoked instead.
        """
        s = Size(2, GiB)

        # rtruediv, retains fractional quantities
        self.assertEqual(s.__rtruediv__(s), Fraction(1))
        with self.assertRaises(SizeNonsensicalOpError):
            s.__rtruediv__("str") # pylint: disable=pointless-statement

        # rdivmod
        self.assertEqual(
            Size(16, MiB).__rdivmod__(Size(24, MiB)),
            (1, Size(8, MiB))
        )
        with self.assertRaises(SizeNonsensicalOpError):
            divmod(s.__rdivmod__("str"))

        # // rfloordiv
        self.assertEqual(s.__rfloordiv__(s), 1)
        with self.assertRaises(SizeNonsensicalOpError):
            s.__rfloordiv__("str") # pylint: disable=pointless-statement

        # rmod
        self.assertEqual(s.__rmod__(s), Size(0))
        with self.assertRaises(SizeNonsensicalOpError):
            s.__rmod__("str") # pylint: disable=expression-not-assigned, pointless-statement

        # rsub
        self.assertEqual(s.__rsub__(s), Size(0))
        with self.assertRaises(SizeNonsensicalOpError):
            s.__rsub__(2) # pylint: disable=pointless-statement