datetimetester.py 文件源码

def test_astimezone(self):
        # Pretty boring!  The TZ test is more interesting here.  astimezone()
        # simply can't be applied to a naive object.
        dt = self.theclass.now()
        f = FixedOffset(44, "")
        self.assertRaises(TypeError, dt.astimezone) # not enough args
        self.assertRaises(TypeError, dt.astimezone, f, f) # too many args
        self.assertRaises(TypeError, dt.astimezone, dt) # arg wrong type
        self.assertRaises(ValueError, dt.astimezone, f) # naive
        self.assertRaises(ValueError, dt.astimezone, tz=f)  # naive

        class Bogus(tzinfo):
            def utcoffset(self, dt): return None
            def dst(self, dt): return timedelta(0)
        bog = Bogus()
        self.assertRaises(ValueError, dt.astimezone, bog)   # naive
        self.assertRaises(ValueError,
                          dt.replace(tzinfo=bog).astimezone, f)

        class AlsoBogus(tzinfo):
            def utcoffset(self, dt): return timedelta(0)
            def dst(self, dt): return None
        alsobog = AlsoBogus()
        self.assertRaises(ValueError, dt.astimezone, alsobog) # also naive