有没有办法在单元测试中获取PassthroughSubject发布者的值？我想测试一个函数是否返回成功，并测试这个函数，我想看看何时发布者值为.loaded，然后就是成功。
class HomeViewModel: ObservableObject {
var homeState = PassthroughSubject<StatePublisher, Never>()
func load(item: HomeModel) {
self.homeState.send(.loading)
self.dataSource.load(item: item) { result in
switch result {
case .success:
self.homeState.send(.loaded)
case let .failure(error):
self.homeState.send(.error(message: error.localizedDescription))
}
}
}
}
class HomeViewModelTests: XCTestCase {
var sut: ViewModel!
var subscriptions = Set<AnyCancellable>()
override func setUpWithError() throws {
sut = ViewModel()
}
override func tearDownWithError() throws {
sut = nil
subscriptions = []
}
func testUpdateHomeSuccess() {
let expected = StatePublisher.loaded
var result …我有一个网络监视器，我想在状态发生变化时接收通知。
看起来像这样：
final class NetworkMonitor: ObservableObject {
let monitor = NWPathMonitor()
let queue = DispatchQueue(label: "Monitor")
static let shared = NetworkMonitor()
@Published var status: NetworkStatus = .connected
func start() {
self.monitor.pathUpdateHandler = { [weak self] path in
guard let self = self else { return }
DispatchQueue.main.async {
self.status = (path.status == .satisfied) ? .connected : .disconnected
}
}
self.monitor.start(queue: self.queue)
}
}
我在 Home 中创建一个网络监视器的@StateObject并通过环境对象发送它。
struct HomeView: View {
@StateObject var networkMonitor = NetworkMonitor()
var body: some …