????1.????????

STFail(failure_description?? ...)

????failure_description:??????????????????????NSString???????nil??

????...:?????????????failure_description???????????????б??

????2.????????????????????

STAssertEqualObjects(object_1?? object_2?? failure_description?? ...)

????object_1:??????????

????object_2:??????????

?????????[object_1 isEqualTo:object_2]???????????NO???????????

????3.?????????????????

STAssertEquals(value_1?? value_2?? failure_description?? ...)

????value_1:?????????????????????塣

????value_2:?????????????????????塣

?????????value_1??????value_2???????????

????4.?????????????????????????????????

STAssertEqualsWithAccuracy(value_1?? value_2?? accuracy?? fialure_description?? ...)

????value_1:??????????????????

????value_2:??????????????????

????accuracy:??????????????????

???????????????????????????????