Xcode中的XCTest和异步测试

So Apple said in the release note of Xcode 6 that we can now do asynchronous testing directly with XCTest.

所以Apple在Xcode 6的发行说明中说我们现在可以直接使用XCTest进行异步测试。

Anyone knows how to do it using Xcode 6 Beta 3 (Using objective-C or Swift)? I don't want the known semaphore method, but the new Apple way.

任何人都知道如何使用Xcode 6 Beta 3（使用Objective-C或Swift）？我不想要已知的信号量方法，而是新的Apple方式。

I searched into the released note and more but I found nothing. The XCTest header is not very explicit either.

我搜索了发布的音符以及更多，但我一无所获。 XCTest标头也不是很明确。

4 个解决方案

#1

Obj-C example:

Obj-C示例：

- (void)testAsyncMethod
{

    //Expectation
    XCTestExpectation *expectation = [self expectationWithDescription:@"Testing Async Method Works!"];

    [MyClass asyncMethodWithCompletionBlock:^(NSError *error, NSHTTPURLResponse *httpResponse, NSData *data) {

        if(error)
        {
            NSLog(@"error is: %@", error);
        }else{
            NSInteger statusCode = [httpResponse statusCode];
            XCTAssertEqual(statusCode, 200);
            [expectation fulfill];
        }

    }];


    [self waitForExpectationsWithTimeout:5.0 handler:^(NSError *error) {

        if(error)
        {
            XCTFail(@"Expectation Failed with error: %@", error);
        }

    }];
}

#2

The sessions video is perfect, basically you want to do something like this

会话视频是完美的，基本上你想做这样的事情

func testFetchNews() {
    let expectation = self.expectationWithDescription("fetch posts")

    Post.fetch(.Top, completion: {(posts: [Post]!, error: Fetcher.ResponseError!) in
        XCTAssert(true, "Pass")
        expectation.fulfill()
    })

    self.waitForExpectationsWithTimeout(5.0, handler: nil)
}

#3

Session 414 covers async testing in Xcode6

会话414涵盖Xcode6中的异步测试

https://developer.apple.com/videos/wwdc/2014/#414

#4

How I did in swift2

我是怎么做的swift2

Step 1: define expectation

第1步：定义期望

let expectation = self.expectationWithDescription("get result bla bla")

Step 2: tell the test to fulfill expectation right below where you capture response

第2步：告诉测试在下面捕获响应的位置满足期望

responseThatIGotFromAsyncRequest = response.result.value
expectation.fulfill()

Step 3: Tell the test to wait till the expectation is fulfilled

第3步：告诉测试等到期望满足

waitForExpectationsWithTimeout(10)

STep 4: make assertion after async call is finished

STep 4：在异步调用完成后进行断言

XCTAssertEqual(responseThatIGotFromAsyncRequest, expectedResponse)

#1