在 Swift 中使用 OHHTTPStubs 测试请求正文答案

【问题标题】：Test request body with OHHTTPStubs in Swift在 Swift 中使用 OHHTTPStubs 测试请求正文
【发布时间】：2017-05-20 11:16:20
【问题描述】：

我正在尝试测试使用 OHHTTPStubs 捕获的发送请求正文，但返回似乎有问题，因为 request.httpBody 是 nil。

我找到了关于这个问题的信息Testing for the request body in your stubs。但我是 iOS 开发的新手，不知道如何在 Swift 中访问 OHHTTPStubs_HTTPBody。我该怎么做？

【问题讨论】：

标签： ios swift ohhttpstubs

【解决方案1】：

我猜 Swift 中的大致等价物如下：

import OHHTTPStubs.NSURLRequest_HTTPBodyTesting
...
stub(isMethodPOST() && testBody()) { _ in
  return OHHTTPStubsResponse(data: validLoginResponseData, statusCode:200, headers:nil)
}).name = "login"

public func testBody() -> OHHTTPStubsTestBlock {
  return { req in 
    let body = req.ohhttpStubs_HTTPBody()
    let bodyString = String.init(data: body, encoding: String.Encoding.utf8)

    return bodyString == "user=foo&password=bar"
  }
}

因此，更准确地说，您可以通过在OHHTTPStubsTestBlock 中调用ohhttpStubs_HTTPBody() 方法来访问OHHTTPStubs_HTTPBody。

【讨论】：

从 Swift 3 开始有一个小的区别，因为请求是 URLRequest 并且 OHHTTPSubs 的扩展是为 NSURLRequest 编写的。这意味着您需要先对请求对象进行类型转换：let nsRequest = request as NSURLRequest，然后您可以使用nsRequest.ohhttpStubs_HTTPBody()

【解决方案2】：

对我有用的是：

func testYourStuff() {

    let semaphore = DispatchSemaphore(value: 0)

    stub(condition: isScheme(https)) { request in
        if request.url!.host == "blah.com" && request.url!.path == "/blah/stuff" {

            let data = Data(reading: request.httpBodyStream!)
            let dict = Support.dataToDict(with: data)

            // at this point of time you have your data to test
            // for example dictionary as I have
            XCTAssertTrue(...)

        } else {
            XCTFail()
        }

        // flag that we got inside of this block
        semaphore.signal()

        return OHHTTPStubsResponse(jsonObject: [:], statusCode:200, headers:nil)
    }

    // this code will be executed first,
    // but we still need to wait till our stub code will be completed
    CODE to make https request

    _ = semaphore.wait(timeout: DispatchTime.distantFuture)
}

// convert InputStream to Data
extension Data {

init(reading input: InputStream) {

    self.init()
    input.open()

    let bufferSize = 1024
    let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: bufferSize)
    while input.hasBytesAvailable {
        let read = input.read(buffer, maxLength: bufferSize)
        self.append(buffer, count: read)
    }
    buffer.deallocate(capacity: bufferSize)

    input.close()
  }
}

感谢此人将 InputStrem 转换为数据：Reading an InputStream into a Data object

【讨论】：