test_marshal.py 文件源码

def test_floats(self):
        # Test a few floats
        small = 1e-25
        n = sys.maxsize * 3.7e250
        while n > small:
            for expected in (-n, n):
                self.helper(float(expected))
            n /= 123.4567

        f = 0.0
        s = marshal.dumps(f, 2)
        got = marshal.loads(s)
        self.assertEqual(f, got)
        # and with version <= 1 (floats marshalled differently then)
        s = marshal.dumps(f, 1)
        got = marshal.loads(s)
        self.assertEqual(f, got)

        n = sys.maxsize * 3.7e-250
        while n < small:
            for expected in (-n, n):
                f = float(expected)
                self.helper(f)
                self.helper(f, 1)
            n *= 123.4567