Question

我的应用程序中有以下方法，我需要编写单元测试用例任何人都可以建议我如何测试是否调用成功块或错误块。

- (IBAction)loginButtonTapped:(id)sender
{
    void (^SuccessBlock)(id, NSDictionary*) = ^(id response, NSDictionary* headers) {
        [self someMethod];
    };

    void (^ErrorBlock)(id, NSDictionary*, id) = ^(NSError* error, NSDictionary* headers, id response) {
        // some code
    };

    [ServiceClass deleteWebService:@“http://someurl"
                              data:nil
                  withSuccessBlock:SuccessBlock
                    withErrorBlock:ErrorBlock];
}

Answer 1

你必须使用期望，这是一个相对最近推出的API。添加它们是为了解决您现在遇到的问题，验证调用异步方法的回调。

请注意，您还可以设置一个会影响测试结果的超时（例如，慢速网络连接可以触发误报，除非您当然要检查慢速连接，尽管有更好的方法可以做到这一点）

- (void)testThatCallbackIsCalled {

    // Given
    XCTestExpectation *expectation = [self expectationWithDescription:@"Expecting Callback"];

    // When
    void (^SuccessBlock)(id, NSDictionary*) = ^(id response, NSDictionary* headers) {

        // Then
        [self someMethod];
        [expectation fulfill]; // This tells the test that your expectation was fulfilled i.e. the callback was called.
    };

    void (^ErrorBlock)(id, NSDictionary*, id) = ^(NSError* error, NSDictionary* headers, id response) {

     // some code

    };

    [ServiceClass deleteWebService:@“http://someurl"

                                           data:nil

                               withSuccessBlock:SuccessBlock

                                 withErrorBlock:ErrorBlock];
    };

    // Here we set the timeout, play around to find what works best for your case to avoid false positives.
    [self waitForExpectationsWithTimeout:2.0 handler:nil];

}

回调方法ios的单元测试用例

1 个答案: