def test_from_son_from_string(self):
        field = DateTimeField()

        dt_str = "2010-11-12 13:14:15"
        dt = datetime(2010, 11, 12, 13, 14, 15)

        expect(field.from_son(dt_str)).to_equal(dt)
    def test_from_son(self):
        field = DateTimeField()

        dt = datetime(2010, 11, 12, 13, 14, 15)

        expect(field.from_son(dt)).to_equal(dt)