小编Asi*_*waz的帖子

Swift 5 引入了新的 Result 类型来处理异步函数的结果。我想知道如何将这种新的结果类型用于 URLSession。

我有以下代码。

func getCategorByAPI()
    {
        //Base Url is from an static variable
        let url = URL(string: URLManager.aPIBaseURL+"category")!
        var request  = URLRequest(url: url)
        request.httpMethod = "GET"
        let boundary = "Boundary-\(UUID().uuidString)"
        request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")

        let task = URLSession.shared.dataTask(with: request as URLRequest) {
            data, response, error in

            if error != nil {
                //print("error=\(error)")
                return
            }

            do {
                let json = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary
                print(json)
            }catch
            {
                print(error)
            }

        }

        task.resume()
    }

如何使用 swift …

我正在尝试快速进行单元测试。MyFileManager我有一个名为和的两类SomeViewModel

class MyFileManager {
    static let shared = MyFileManager()
    
    func isStored(atPath path: String) -> Bool {
        return FileManager.default.fileExists(atPath: path)
    }
    func readData(atPath path: String) -> Data? {
        return try? Data(contentsOf: URL(fileURLWithPath: path))
    }
}

class SomeViewModel {
    func getCachedData() -> Data? {
        let path = "xxxxx"
        
        if MyFileManager.shared.isStored(atPath: path) {
            return MyFileManager.shared.readData(atPath: path)
        } else {
            return nil
        }
    }
}

我写了一个测试代码。我不确定这段代码是否会给我 100% 的代码覆盖率。这是单元测试

class LinePhoneTests: XCTestCase {

    override func setUpWithError() throws {
        testGetCachedData()
    }

    func testGetCachedData() …