模拟UNNotificationResponse和UNNotification(以及init()标记为不可用的其他iOS平台类)

要做到这一点,请执行以下操作。

在调试时获取对象的真实示例,并使用模拟器保存在文件系统中。

func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {

let encodedObject = NSKeyedArchiver.archivedData(withRootObject: notification)

let  path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] + "/notification.mock"

fileManager.createFile(atPath: path, contents: encodedObject, attributes: nil)

在Mac中找到该对象,并将该文件添加到与测试类相同的目标中。

现在在测试中取消归档。

let path = Bundle(for: type(of: self)).path(forResource: "notification", ofType: "mock")

let data = FileManager.default.contents(atPath: path ?? "")

let notification = NSKeyedUnarchiver.unarchiveObject(with: data ?? Data()) as? UNNotification

简单回答:你不能!

相反,分解您的

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Swift.Void)

然后测试从那里调用的方法。

快乐测试:)

看起来您可以初始化 UNNotificationContent 物体。我选择重做推送处理方法 未通知内容 对象而不是 UNNotificationResponse / UNNotification .

在iOS上实现推送通知的单元测试时,我使用了下一个扩展来创建UNNotificationResponse和UNNotification实例:

extension UNNotificationResponse {

    static func testNotificationResponse(with payloadFilename: String) -> UNNotificationResponse {
        let parameters = parametersFromFile(payloadFilename) // 1
        let request = notificationRequest(with: parameters) // 2 
        return UNNotificationResponse(coder: TestNotificationCoder(with: request))! // 3
    }
}

1. 从文件加载推送通知负载
2. 使用userInfo中的指定参数创建UNNotificationRequest实例
3. 使用NSCoder子类创建UNNotificationResponse实例

以下是我在上面使用的函数:

extension UNNotificationResponse {

    private static func notificationRequest(with parameters: [AnyHashable: Any]) -> UNNotificationRequest {
        let notificationContent = UNMutableNotificationContent()
        notificationContent.title = "Test Title"
        notificationContent.body = "Test Body"
        notificationContent.userInfo = parameters

        let dateInfo = Calendar.current.dateComponents([.year, .month, .day, .hour, .minute, .second], from: Date())
        let trigger = UNCalendarNotificationTrigger(dateMatching: dateInfo, repeats: false)

        let notificationRequest = UNNotificationRequest(identifier: "testIdentifier", content: notificationContent, trigger: trigger)
        return notificationRequest
    }
}

fileprivate class TestNotificationCoder: NSCoder {

    private enum FieldKey: String {
        case date, request, sourceIdentifier, intentIdentifiers, notification, actionIdentifier, originIdentifier, targetConnectionEndpoint, targetSceneIdentifier
    }
    private let testIdentifier = "testIdentifier"
    private let request: UNNotificationRequest
    override var allowsKeyedCoding: Bool { true }

    init(with request: UNNotificationRequest) {
        self.request = request
    }

    override func decodeObject(forKey key: String) -> Any? {
        let fieldKey = FieldKey(rawValue: key)
        switch fieldKey {
        case .date:
            return Date()
        case .request:
            return request
        case .sourceIdentifier, .actionIdentifier, .originIdentifier:
            return testIdentifier
        case .notification:
            return UNNotification(coder: self)
        default:
            return nil
        }
    }
}

如果 UNNotificationResponse 值无关紧要,您只需要执行应用程序委托的方法,您可以通过创建子类化的模拟来实现这一点 NSKeyedArchiver 这样地:

class MockCoder: NSKeyedArchiver {
    override func decodeObject(forKey key: String) -> Any { "" }
}

然后你可以这样称呼它:

let notificationMock = try XCTUnwrap(UNNotificationResponse(coder: MockCoder()))

appDelegate.userNotificationCenter(UNUserNotificationCenter.current(), didReceive: notificationMock) { }

你的应用程序代表的 userNotificationCenter(_:didReceive:withCompletionHandler:) 方法现在将被调用,允许您对自己的内容进行断言(至少假设没有针对通知本身的断言)。

您可以使用 class_createInstance(UNNotification.classForKeyedArchiver() ...) 并将其价值视为不被注意

如果你想操纵它 content 和 date 您可以子类化的成员 UNNotification 使用相同的公式更改类名并强制转换到子类来创建它,然后覆盖那些打开的成员并返回所需的任何内容