test_interest.py 文件源码

def test_find_payments(self):
        cls = LowestBalanceFirstMethod(Decimal('100.00'))
        s1 = Mock(spec_set=CCStatement)
        type(s1).minimum_payment = PropertyMock(return_value=Decimal('2.00'))
        type(s1).principal = PropertyMock(return_value=Decimal('10.00'))
        s2 = Mock(spec_set=CCStatement)
        type(s2).minimum_payment = PropertyMock(return_value=Decimal('5.00'))
        type(s2).principal = PropertyMock(return_value=Decimal('25.00'))
        s3 = Mock(spec_set=CCStatement)
        type(s3).minimum_payment = PropertyMock(return_value=Decimal('2.00'))
        type(s3).principal = PropertyMock(return_value=Decimal('1234.56'))
        s4 = Mock(spec_set=CCStatement)
        type(s4).minimum_payment = PropertyMock(return_value=Decimal('7.00'))
        type(s4).principal = PropertyMock(return_value=Decimal('3.00'))
        assert cls.find_payments([s1, s2, s3, s4]) == [
            Decimal('2.00'),
            Decimal('5.00'),
            Decimal('2.00'),
            Decimal('91.00')
        ]