Use files instead of UDP for signalling. (#585)
This commit is contained in:
parent
6333de802a
commit
872c911cb5
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@ -40,6 +40,10 @@ function_body_length:
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warning: 50
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error: 100
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nesting:
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type_level:
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warning: 5
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custom_rules:
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print_deprecation:
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regex: "\\b(print)\\b"
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@ -72,13 +72,22 @@
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"version" : "7.4.1"
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}
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},
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{
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"identity" : "kzfilewatchers",
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"kind" : "remoteSourceControl",
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"location" : "https://github.com/krzysztofzablocki/KZFileWatchers",
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"state" : {
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"branch" : "master",
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"revision" : "d27a9557427d261adccdf4b566acc9d9c0fec6f4"
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}
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},
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{
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"identity" : "matrix-analytics-events",
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"kind" : "remoteSourceControl",
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"location" : "https://github.com/matrix-org/matrix-analytics-events",
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"state" : {
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"branch" : "main",
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"revision" : "4bcc7f566b165cd2d8fde07d23bda77e1d9fbb2d"
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"revision" : "94598bd8ef3aa2a3d3848c656c37d5e95b6b1cff",
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"version" : "0.4.0"
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}
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},
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{
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@ -32,12 +32,15 @@ class MockRoomTimelineController: RoomTimelineControllerProtocol {
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var timelineItems: [RoomTimelineItemProtocol] = RoomTimelineItemFixtures.default
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private var connection: UITestsSignalling.Connection?
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private var client: UITestsSignalling.Client?
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init(listenForSignals: Bool = false) {
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if listenForSignals {
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connection = .init()
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Task { try await startListening() }
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guard listenForSignals else { return }
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do {
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try startListening()
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} catch {
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fatalError("Failure setting up signalling: \(error)")
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}
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}
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@ -70,20 +73,18 @@ class MockRoomTimelineController: RoomTimelineControllerProtocol {
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// MARK: - UI Test signalling
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/// The cancellable used for UI Tests signalling.
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private var signalCancellable: AnyCancellable?
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/// Allows the simulation of server responses by listening for signals from UI tests.
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private func startListening() async throws {
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try await connection?.connect()
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private func startListening() throws {
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let client = try UITestsSignalling.Client(mode: .app)
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Task {
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while let connection {
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do {
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try await handleSignal(connection.receive())
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} catch {
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connection.disconnect()
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self.connection = nil
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}
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}
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signalCancellable = client.signals.sink { [weak self] signal in
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Task { try await self?.handleSignal(signal) }
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}
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self.client = client
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}
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/// Handles a UI test signal as necessary.
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@ -106,7 +107,7 @@ class MockRoomTimelineController: RoomTimelineControllerProtocol {
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timelineItems.append(incomingItem)
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callbacks.send(.updatedTimelineItems)
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try? await connection?.send(.success)
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try client?.send(.success)
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}
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/// Prepends the next chunk of items to the `timelineItems` array.
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@ -119,6 +120,6 @@ class MockRoomTimelineController: RoomTimelineControllerProtocol {
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callbacks.send(.updatedTimelineItems)
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callbacks.send(.isBackPaginating(false))
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try? await connection?.send(.success)
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try client?.send(.success)
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}
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}
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@ -14,12 +14,13 @@
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// limitations under the License.
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//
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import Network
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import Combine
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import KZFileWatchers
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import SwiftUI
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enum UITestsSignal: String {
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/// An internal signal used to bring up the connection.
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case connect
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/// An internal signal used to indicate that one side of the connection is ready.
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case ready
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/// Ask the app to back paginate.
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case paginate
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/// Ask the app to simulate an incoming message.
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@ -28,211 +29,127 @@ enum UITestsSignal: String {
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case success
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}
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enum UITestsSignalError: Error {
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/// An unknown error occurred.
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case unknown
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/// Signalling could not be used as is hasn't been enabled.
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case disabled
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/// The connection was cancelled.
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case cancelled
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/// The connection hasn't been established.
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enum UITestsSignalError: String, LocalizedError {
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/// The app client failed to start as the tests client isn't ready.
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case testsClientNotReady
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/// Failed to send a signal as a connection hasn't been established.
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case notConnected
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/// Attempted to receive multiple signals at once.
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case awaitingAnotherSignal
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/// Receiving the next signal timed out.
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case timeout
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/// A network error occurred.
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case nwError(NWError)
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/// An unexpected signal was received. This error isn't used internally.
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case unexpected
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var errorDescription: String? { "UITestsSignalError.\(rawValue)" }
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}
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enum UITestsSignalling {
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/// The Bonjour service name used for the connection. The device name
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/// is included to allow UI tests to run on multiple devices simultaneously.
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private static let serviceName = "UITestsSignalling \(UIDevice.current.name) (\(Locale.current.identifier))"
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/// The Bonjour service type used for the connection.
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private static let serviceType = "_signalling._udp."
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/// The Bonjour domain used for the connection.
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private static let domain = "local."
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/// The DispatchQueue used for networking.
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private static let queue: DispatchQueue = .main
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/// A network listener that can be used in the UI tests runner to create a two-way `Connection` with the app.
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class Listener {
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/// The underlying network listener.
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private let listener: NWListener
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/// The established connection. This is stored in case the connection is established
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/// before `connection()` is awaited and so the continuation is still `nil`.
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private var establishedConnection: Connection?
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/// The continuation to call when a connection is established.
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private var connectionContinuation: CheckedContinuation<Connection, Error>?
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/// Creates a new signalling `Listener` and starts listening.
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init() throws {
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let service = NWListener.Service(name: UITestsSignalling.serviceName, type: UITestsSignalling.serviceType, domain: UITestsSignalling.domain)
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listener = try NWListener(service: service, using: .udp)
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listener.newConnectionHandler = { [weak self] nwConnection in
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let connection = Connection(nwConnection: nwConnection)
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nwConnection.start(queue: UITestsSignalling.queue)
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nwConnection.stateUpdateHandler = { state in
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switch state {
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case .ready:
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connection.receiveNextMessage()
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self?.establishedConnection = connection
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self?.connectionContinuation?.resume(returning: connection)
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case .failed(let error):
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self?.connectionContinuation?.resume(with: .failure(error))
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default:
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break
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}
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}
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self?.listener.cancel() // Stop listening for connections when one is discovered.
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}
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listener.start(queue: UITestsSignalling.queue)
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}
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/// Returns the negotiated `Connection` as and when it has been established.
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func connection() async throws -> Connection {
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guard listener.state == .setup else { throw UITestsSignalError.unknown }
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if let establishedConnection {
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return establishedConnection
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}
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return try await withCheckedThrowingContinuation { [weak self] continuation in
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self?.connectionContinuation = continuation
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}
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}
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/// Stops the listening when a connection hasn't been established.
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func cancel() {
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listener.cancel()
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if let connectionContinuation {
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connectionContinuation.resume(throwing: UITestsSignalError.cancelled)
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self.connectionContinuation = nil
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}
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}
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}
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/// A two-way UDP connection that can be used for signalling between the app and the UI tests runner.
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/// A two-way file-based signalling client that can be used to signal between the app and the UI tests runner.
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/// The connection should be created as follows:
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/// - Create a `Listener` in the UI tests before launching the app. This will automatically start listening for a connection.
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/// - With in the App, create a `Connection` and call `connect()` to establish a connection.
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/// - Await the `connection()` on the `Listener` when you need to send the signal.
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/// - The two `Connection` objects can now be used for two-way signalling.
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class Connection {
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/// The underlying network connection.
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private let connection: NWConnection
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/// A continuation to call each time a signal is received.
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private var nextMessageContinuation: CheckedContinuation<UITestsSignal, Error>?
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/// A task to handle the timeout when receiving a signal.
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private var nextMessageTimeoutTask: Task<Void, Never>? {
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didSet {
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oldValue?.cancel()
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}
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}
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/// - Create a `Client` in `tests` mode in your UI tests before launching the app. It will start listening for signals.
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/// - Within the app, create a `Client` in `app` mode. This will check that the tests are ready and echo back that the app is too.
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/// - Call `waitForApp()` in the tests when you need to send the signal. This will suspend execution until the app has signalled it is ready.
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/// - The two `Client` objects can now be used for two-way signalling.
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class Client {
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/// The file watcher responsible for receiving signals.
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private let fileWatcher: FileWatcher.Local
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/// Creates a new signalling `Connection`.
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init() {
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let endpoint = NWEndpoint.service(name: UITestsSignalling.serviceName,
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type: UITestsSignalling.serviceType,
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domain: UITestsSignalling.domain,
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interface: nil)
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connection = NWConnection(to: endpoint, using: .udp)
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}
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/// The file name used for the connection.
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///
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/// The device name is included to allow UI tests to run on multiple devices simultaneously.
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/// When using parallel execution, each execution will spawn a simulator clone with its own unique name.
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private let fileURL = {
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let directory = URL(filePath: "/Users/Shared")
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let deviceName = (UIDevice.current.name).replacing(" ", with: "-")
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return directory.appending(component: "UITestsSignalling-\(deviceName)")
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}()
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/// Creates a new signalling `Connection` from an established `NWConnection`.
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fileprivate init(nwConnection: NWConnection) {
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connection = nwConnection
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}
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/// A mode that defines the behaviour of the client.
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enum Mode: String { case app, tests }
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/// The mode that the client is using.
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let mode: Mode
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/// Attempts to establish a connection with a `Listener`.
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func connect() async throws {
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guard connection.state == .setup else { return }
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/// A publisher the will be sent every time a new signal is received.
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let signals = PassthroughSubject<UITestsSignal, Never>()
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/// Whether or not the client has established a connection.
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private(set) var isConnected = false
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/// Creates a new signalling `Client`.
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init(mode: Mode) throws {
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fileWatcher = .init(path: fileURL.path())
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self.mode = mode
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return try await withCheckedThrowingContinuation { continuation in
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connection.start(queue: UITestsSignalling.queue)
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connection.stateUpdateHandler = { state in
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switch state {
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case .ready:
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self.receiveNextMessage()
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continuation.resume()
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Task { try await self.send(.connect) }
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case .failed(let error):
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continuation.resume(with: .failure(error))
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default:
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break
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}
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}
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switch mode {
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case .tests:
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// The tests client is started first and writes to the file saying it is ready.
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try rawSignal(.ready).write(to: fileURL, atomically: false, encoding: .utf8)
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case .app:
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// The app client is started second and checks that there is a ready signal from the tests.
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guard try String(contentsOf: fileURL) == "\(Mode.tests):\(UITestsSignal.ready)" else { throw UITestsSignalError.testsClientNotReady }
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isConnected = true
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// The app client then echoes back to the tests that it is now ready.
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try send(.ready)
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}
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}
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/// Stops the connection.
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func disconnect() {
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connection.cancel()
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if let nextMessageContinuation {
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nextMessageContinuation.resume(throwing: UITestsSignalError.cancelled)
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self.nextMessageContinuation = nil
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nextMessageTimeoutTask = nil
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}
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}
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/// Sends a message to the other side of the connection.
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func send(_ signal: UITestsSignal) async throws {
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guard connection.state == .ready else { throw UITestsSignalError.notConnected }
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let data = signal.rawValue.data(using: .utf8)
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connection.send(content: data, completion: .idempotent)
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}
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/// Returns the next message received from the other side of the connection.
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func receive() async throws -> UITestsSignal {
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guard connection.state == .ready else { throw UITestsSignalError.notConnected }
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guard nextMessageContinuation == nil else { throw UITestsSignalError.awaitingAnotherSignal }
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return try await withCheckedThrowingContinuation { continuation in
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self.nextMessageContinuation = continuation
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// Add a 30 second timeout to stop tests from hanging
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self.nextMessageTimeoutTask = Task { [weak self] in
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guard let self else { return }
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try? await Task.sleep(for: .seconds(30))
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guard !Task.isCancelled,
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let nextMessageContinuation = self.nextMessageContinuation
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else { return }
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nextMessageContinuation.resume(throwing: UITestsSignalError.timeout)
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self.nextMessageContinuation = nil
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self.nextMessageTimeoutTask = nil
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}
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try fileWatcher.start { [weak self] result in
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self?.handleFileRefresh(result)
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}
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}
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/// Processes the next message received by the connection.
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fileprivate func receiveNextMessage() {
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connection.receiveMessage { [weak self] completeContent, _, isComplete, error in
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guard let self else { return }
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guard isComplete else { fatalError("Partial messages not supported") }
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guard let completeContent,
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let message = String(data: completeContent, encoding: .utf8),
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let signal = UITestsSignal(rawValue: message)
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else {
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let error: UITestsSignalError = error.map { .nwError($0) } ?? .unknown
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self.nextMessageContinuation?.resume(with: .failure(error))
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self.nextMessageContinuation = nil
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self.nextMessageTimeoutTask = nil
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return
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}
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if signal != .connect {
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self.nextMessageContinuation?.resume(returning: signal)
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self.nextMessageContinuation = nil
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self.nextMessageTimeoutTask = nil
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}
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self.receiveNextMessage()
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/// Suspends execution until the app's Client has signalled that it's ready.
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func waitForApp() async {
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guard mode == .tests else { fatalError("The app can't wait for itself.") }
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guard !isConnected else { return }
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await _ = signals.values.first { $0 == .ready }
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NSLog("UITestsSignalling: Connected to app.")
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}
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/// Stops listening for signals.
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func stop() throws {
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try fileWatcher.stop()
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}
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/// Sends a signal.
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func send(_ signal: UITestsSignal) throws {
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guard isConnected else { throw UITestsSignalError.notConnected }
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let rawSignal = rawSignal(signal)
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try rawSignal.write(to: fileURL, atomically: false, encoding: .utf8)
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NSLog("UITestsSignalling: Sent \(rawSignal)")
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}
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/// The signal formatted as a string, prefixed with an identifier for the sender.
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/// E.g. The tests client would produce `tests:ready` for the ready signal.
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private func rawSignal(_ signal: UITestsSignal) -> String {
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"\(mode.rawValue):\(signal.rawValue)"
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}
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/// Handles a file refresh to receive a new signal.
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fileprivate func handleFileRefresh(_ result: FileWatcher.RefreshResult) {
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switch result {
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case .noChanges:
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guard let data = try? Data(contentsOf: fileURL) else { return }
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processFileData(data)
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case .updated(let data):
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processFileData(data)
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}
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}
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/// Processes string data from the file and publishes its signal.
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private func processFileData(_ data: Data) {
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guard let message = String(data: data, encoding: .utf8) else { return }
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let components = message.components(separatedBy: ":")
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guard components.count == 2,
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components[0] != mode.rawValue, // Filter out messages sent by this client.
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let signal = UITestsSignal(rawValue: components[1])
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else { return }
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if signal == .ready {
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isConnected = true
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}
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signals.send(signal)
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NSLog("UITestsSignalling: Received \(message)")
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}
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}
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}
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|
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@ -120,6 +120,7 @@ targets:
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- package: DTCoreText
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- package: KeychainAccess
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- package: Kingfisher
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- package: KZFileWatchers
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- package: PostHog
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- package: SwiftyBeaver
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- package: SwiftState
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@ -19,8 +19,6 @@ import XCTest
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@MainActor
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class RoomScreenUITests: XCTestCase {
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let connectionWaitDuration: Duration = .seconds(2)
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|
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func testPlainNoAvatar() {
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let app = Application.launch(.roomPlainNoAvatar)
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|
@ -46,47 +44,44 @@ class RoomScreenUITests: XCTestCase {
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app.assertScreenshot(.roomSmallTimeline)
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}
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func disabled_testSmallTimelineWithIncomingAndPagination() async throws {
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let listener = try UITestsSignalling.Listener()
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func testSmallTimelineWithIncomingAndPagination() async throws {
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let client = try UITestsSignalling.Client(mode: .tests)
|
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let app = Application.launch(.roomSmallTimelineIncomingAndSmallPagination)
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let connection = try await listener.connection()
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try await Task.sleep(for: connectionWaitDuration) // Allow the connection to settle on CI/Intel...
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defer { connection.disconnect() }
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await client.waitForApp()
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defer { try? client.stop() }
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// When a back pagination occurs and an incoming message arrives.
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try await performOperation(.incomingMessage, using: connection)
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try await performOperation(.paginate, using: connection)
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try await performOperation(.incomingMessage, using: client)
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try await performOperation(.paginate, using: client)
|
||||
|
||||
// Then the 4 visible messages should stay aligned to the bottom.
|
||||
app.assertScreenshot(.roomSmallTimelineIncomingAndSmallPagination)
|
||||
}
|
||||
|
||||
func disabled_testSmallTimelineWithLargePagination() async throws {
|
||||
let listener = try UITestsSignalling.Listener()
|
||||
func testSmallTimelineWithLargePagination() async throws {
|
||||
let client = try UITestsSignalling.Client(mode: .tests)
|
||||
|
||||
let app = Application.launch(.roomSmallTimelineLargePagination)
|
||||
|
||||
let connection = try await listener.connection()
|
||||
try await Task.sleep(for: connectionWaitDuration) // Allow the connection to settle on CI/Intel...
|
||||
defer { connection.disconnect() }
|
||||
await client.waitForApp()
|
||||
defer { try? client.stop() }
|
||||
|
||||
// When a large back pagination occurs.
|
||||
try await performOperation(.paginate, using: connection)
|
||||
try await performOperation(.paginate, using: client)
|
||||
|
||||
// The bottom of the timeline should remain visible with more items added above.
|
||||
app.assertScreenshot(.roomSmallTimelineLargePagination)
|
||||
}
|
||||
|
||||
func disabled_testTimelineLayoutInMiddle() async throws {
|
||||
let listener = try UITestsSignalling.Listener()
|
||||
func testTimelineLayoutInMiddle() async throws {
|
||||
let client = try UITestsSignalling.Client(mode: .tests)
|
||||
|
||||
let app = Application.launch(.roomLayoutMiddle)
|
||||
|
||||
let connection = try await listener.connection()
|
||||
try await Task.sleep(for: connectionWaitDuration) // Allow the connection to settle on CI/Intel...
|
||||
defer { connection.disconnect() }
|
||||
await client.waitForApp()
|
||||
defer { try? client.stop() }
|
||||
|
||||
// Given a timeline that is neither at the top nor the bottom.
|
||||
app.tables.element.swipeDown()
|
||||
|
@ -94,13 +89,13 @@ class RoomScreenUITests: XCTestCase {
|
|||
app.assertScreenshot(.roomLayoutMiddle, step: 0) // Assert initial state for comparison.
|
||||
|
||||
// When a back pagination occurs.
|
||||
try await performOperation(.paginate, using: connection)
|
||||
try await performOperation(.paginate, using: client)
|
||||
|
||||
// Then the UI should remain unchanged.
|
||||
app.assertScreenshot(.roomLayoutMiddle, step: 0)
|
||||
|
||||
// When an incoming message arrives
|
||||
try await performOperation(.incomingMessage, using: connection)
|
||||
try await performOperation(.incomingMessage, using: client)
|
||||
|
||||
// Then the UI should still remain unchanged.
|
||||
app.assertScreenshot(.roomLayoutMiddle, step: 0)
|
||||
|
@ -112,14 +107,13 @@ class RoomScreenUITests: XCTestCase {
|
|||
app.assertScreenshot(.roomLayoutMiddle, step: 1)
|
||||
}
|
||||
|
||||
func disabled_testTimelineLayoutAtTop() async throws {
|
||||
let listener = try UITestsSignalling.Listener()
|
||||
func testTimelineLayoutAtTop() async throws {
|
||||
let client = try UITestsSignalling.Client(mode: .tests)
|
||||
|
||||
let app = Application.launch(.roomLayoutTop)
|
||||
|
||||
let connection = try await listener.connection()
|
||||
try await Task.sleep(for: connectionWaitDuration) // Allow the connection to settle on CI/Intel...
|
||||
defer { connection.disconnect() }
|
||||
await client.waitForApp()
|
||||
defer { try? client.stop() }
|
||||
|
||||
// Given a timeline that is scrolled to the top.
|
||||
while !app.staticTexts["Bacon ipsum dolor amet commodo incididunt ribeye dolore cupidatat short ribs."].isHittable {
|
||||
|
@ -129,23 +123,22 @@ class RoomScreenUITests: XCTestCase {
|
|||
app.assertScreenshot(.roomLayoutTop, insets: cropped) // Assert initial state for comparison.
|
||||
|
||||
// When a back pagination occurs.
|
||||
try await performOperation(.paginate, using: connection)
|
||||
try await performOperation(.paginate, using: client)
|
||||
|
||||
// Then the bottom of the timeline should remain unchanged (with new items having been added above).
|
||||
app.assertScreenshot(.roomLayoutTop, insets: cropped)
|
||||
}
|
||||
|
||||
func disabled_testTimelineLayoutAtBottom() async throws {
|
||||
let listener = try UITestsSignalling.Listener()
|
||||
func testTimelineLayoutAtBottom() async throws {
|
||||
let client = try UITestsSignalling.Client(mode: .tests)
|
||||
|
||||
let app = Application.launch(.roomLayoutBottom)
|
||||
|
||||
let connection = try await listener.connection()
|
||||
try await Task.sleep(for: connectionWaitDuration) // Allow the connection to settle on CI/Intel...
|
||||
defer { connection.disconnect() }
|
||||
await client.waitForApp()
|
||||
defer { try? client.stop() }
|
||||
|
||||
// When an incoming message arrives.
|
||||
try await performOperation(.incomingMessage, using: connection)
|
||||
try await performOperation(.incomingMessage, using: client)
|
||||
|
||||
// Then the timeline should scroll down to reveal the message.
|
||||
app.assertScreenshot(.roomLayoutBottom, step: 0)
|
||||
|
@ -159,10 +152,10 @@ class RoomScreenUITests: XCTestCase {
|
|||
|
||||
// MARK: - Helper Methods
|
||||
|
||||
private func performOperation(_ operation: UITestsSignal, using connection: UITestsSignalling.Connection) async throws {
|
||||
try await connection.send(operation)
|
||||
guard try await connection.receive() == .success else { throw UITestsSignalError.unexpected }
|
||||
try await Task.sleep(for: connectionWaitDuration) // Allow the timeline to update, and the connection to be ready
|
||||
private func performOperation(_ operation: UITestsSignal, using client: UITestsSignalling.Client) async throws {
|
||||
try client.send(operation)
|
||||
await _ = client.signals.values.first { $0 == .success }
|
||||
try await Task.sleep(for: .milliseconds(500)) // Allow the timeline to update
|
||||
}
|
||||
|
||||
private func tapMessageComposer(in app: XCUIApplication) async throws {
|
||||
|
|
|
@ -34,6 +34,7 @@ targets:
|
|||
- package: DTCoreText
|
||||
- package: KeychainAccess
|
||||
- package: Kingfisher
|
||||
- package: KZFileWatchers
|
||||
- package: PostHog
|
||||
- package: SwiftyBeaver
|
||||
- package: SwiftState
|
||||
|
|
|
@ -1 +1 @@
|
|||
Fix UI Tests for OnboardingScreen, BugReportScreen, ServerSelectionScreen, and UserSessionFlows.
|
||||
Fix UI Tests for OnboardingScreen, BugReportScreen, ServerSelectionScreen, and UserSessionFlows. Fix UITestsSignalling by switching to file-based communication with a publisher.
|
|
@ -46,7 +46,7 @@ packages:
|
|||
path: DesignKit
|
||||
AnalyticsEvents:
|
||||
url: https://github.com/matrix-org/matrix-analytics-events
|
||||
branch: main
|
||||
exactVersion: 0.4.0
|
||||
AppAuth:
|
||||
url: https://github.com/openid/AppAuth-iOS
|
||||
majorVersion: 1.5.0
|
||||
|
@ -65,6 +65,9 @@ packages:
|
|||
Kingfisher:
|
||||
url: https://github.com/onevcat/Kingfisher
|
||||
majorVersion: 7.2.0
|
||||
KZFileWatchers:
|
||||
url: https://github.com/krzysztofzablocki/KZFileWatchers
|
||||
branch: master
|
||||
Introspect:
|
||||
url: https://github.com/siteline/SwiftUI-Introspect
|
||||
majorVersion: 0.1.4
|
||||
|
|
Loading…
Reference in New Issue