如何在XCTest上测试sendAsynchronousRequest :. [英] How to test a sendAsynchronousRequest: on XCTest

问题描述

很抱歉noob问题，但我正在尝试测试连接，但我无法验证请求的返回，因为测试在完成处理程序有机会执行之前结束。说明：

Sorry for the noob question, but I'm trying to test a connection, but I'm not able do verify the return of the request, because the test ends before the completion handler have a chance to execute. To ilustrate:

-(void)testConnection
{

    [[Conector sharedInstance] performAsynchronousRequestWithServerRequest:_srvRequest completionHandler:^(RequestAsynchronousStatus finishStatus, NSData *data) {
        if (finishStatus == RequestAsynchronousOK){
            _data = data;
            NSLog(@"Data OK");
        }
    }];

    XCTAssertNotNil(_data, @"Data was nil");

}

当我尝试断言时，_data将始终为零，因为完成处理程序尚未执行。有一种机制可以强制测试等待，直到我从sendAsynchronousRequest：方法得到一些响应。
提前致谢。

When I try to assert, _data will always be nil, because the completion handler wasn't executed yet. There is a mechanism to force the test to wait until I have some response from the sendAsynchronousRequest: method. Thanks in advance.

推荐答案

这看起来就像你需要的那样：

This looks like exactly what you need:

XCAsyncTestCase ：具有异步功能的SenTestCase子类。

XCAsyncTestCase: Asynchronous capable SenTestCase subclass.

基本上，你应该像这样编写你的测试：

Basically, you should write your test like this:

- (void)testConnection
{
    [[Conector sharedInstance] performAsynchronousRequestWithServerRequest:_srvRequest completionHandler:^(RequestAsynchronousStatus finishStatus, NSData *data) {
        if (finishStatus == RequestAsynchronousOK)
        {
            _data = data;
            [self notify:XCTAsyncTestCaseStatusSucceeded];
            NSLog(@"Data OK");
        }
    }];

    [self waitForTimeout:10];

    XCTAssertNotNil(_data, @"Data was nil");
}

注意 waitForTimeout：通话和通知：通话。 10秒应该足以进行测试，但这取决于请求本身。

Notice the waitForTimeout: call and the notify: calls. 10 seconds should be enough for the test, though it would depend on the request itself.

你甚至可以更具体地等待某种状态，如下所示： / p>

You could even get more specific and wait for a certain status, like so:

[self waitForStatus: XCTAsyncTestCaseStatusSucceeded timeout:10];

这样，如果连接无法通知 XCTAsyncTestCaseStatusSucceeded 状态，等待调用将超时，您的测试将失败（应该如此）。

This way, if the connection fails to notify the XCTAsyncTestCaseStatusSucceeded status, the wait call will timeout and your test would fail (as it should).

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