using System; using System.Threading.Tasks; using Newtonsoft.Json; using NSubstitute; using NUnit.Framework; using TINK.Model.Bikes.BikeInfoNS.BluetoothLock; using TINK.Model.Connector; using TINK.Model.Device; using TINK.Model.State; using TINK.Model.User; using TINK.Repository.Exception; using TINK.Repository.Response; using TINK.Services.BluetoothLock; using TINK.Services.BluetoothLock.Exception; using TINK.Services.BluetoothLock.Tdo; using TINK.Services.Geolocation; using TINK.View; using TINK.ViewModel; using TINK.ViewModel.Bikes; using TINK.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler; namespace TestTINKLib.Fixtures.ObjectTests.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler { public class TestReservedDisconnected { /// /// Test construction of object. /// [Test] public void Testctor() { var handler = new ReservedDisconnected( Substitute.For(), () => true, // isConnectedDelegate (isConnexted) => Substitute.For(), Substitute.For(), Substitute.For(), () => Substitute.For(), Substitute.For(), Substitute.For(), Substitute.For(), Substitute.For()); // Verify prerequisites. Assert.AreEqual("Cancel bike reservation", handler.ButtonText); Assert.IsTrue(handler.IsButtonVisible); Assert.AreEqual("Search lock", handler.LockitButtonText); Assert.IsTrue(handler.IsLockitButtonVisible); } /// /// Use case: Cancel reservation. /// Comment: User deceide to abort cancelling (user is ased whether to really cancel) /// Final state: Same as initial state. /// [Test] public void TestCancelReservationCancel() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); bike.Id.Returns("0"); viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(false)); var subsequent = handler.HandleRequestOption1().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No"); bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText); Assert.IsTrue(subsequent.IsButtonVisible); Assert.AreEqual("Search lock", subsequent.LockitButtonText); Assert.IsTrue(subsequent.IsLockitButtonVisible); } /// /// Use case: Cancel reservation. /// Final state: Disposable. /// [Test] public void TestCancelReservation() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); bike.Id.Returns("0"); viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true)); bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object. bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requsthandler factory queries lock state to create appropriate request handler object. var subsequent = handler.HandleRequestOption1().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Canceling reservation..."; connector.Command.DoCancelReservation(bike); // Booking must be performed bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Reserve bike", subsequent.ButtonText); Assert.IsTrue(subsequent.IsButtonVisible); Assert.AreEqual("DisposableDisconnected", subsequent.LockitButtonText); Assert.IsFalse(subsequent.IsLockitButtonVisible); } /// /// Use case: Cancel reservation. /// Comment: Exception is thrown. /// Final state: Same as initial state. /// [Test] public void TestCancelReservationDoCancelReservationInvalidAuthorizationResponseException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); bike.Id.Returns("0"); viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true)); var l_oResponse = JsonConvert.DeserializeObject(@" { ""response"" : ""authorization"", ""authcookie"" : ""4da3044c8657a04ba60e2eaa753bc51a"", ""user_group"" : [ ""TINK"", ""Konrad"" ], ""response_state"" : ""OK"", ""apiserver"" : ""https://tinkwwp.copri-bike.de"" }"); connector.Command.DoCancelReservation(bike).Returns(x => throw new InvalidAuthorizationResponseException("mustermann@server.de", l_oResponse)); bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object. bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requsthandler factory queries lock state to create appropriate request handler object. var subsequent = handler.HandleRequestOption1().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Canceling reservation..."; connector.Command.DoCancelReservation(bike); // Booking must be performed bikesViewModel.ActionText = ""; viewService.DisplayAlert( "Error when canceling the reservation!", "Can not login user mustermann@server.de. Mail address unknown or password invalid.", "OK"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText); Assert.IsTrue(subsequent.IsButtonVisible); Assert.AreEqual("Search lock", subsequent.LockitButtonText); Assert.IsTrue(subsequent.IsLockitButtonVisible); } /// /// Use case: Cancel reservation. /// Comment: Canceling reservation fails. /// Final state: Same as initial state. /// [Test] public void TestCancelReservationDoCancelReservationWebConnectFailureException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); bike.Id.Returns("0"); viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true)); connector.Command.DoCancelReservation(bike).Returns(x => throw new WebConnectFailureException("Context info", new Exception("chub"))); bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object. bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requsthandler factory queries lock state to create appropriate request handler object. var subsequent = handler.HandleRequestOption1().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Canceling reservation..."; connector.Command.DoCancelReservation(bike); // Booking must be performed bikesViewModel.ActionText = ""; viewService.DisplayAlert( "Connection error when canceling the reservation!", "Context info\r\nIs WIFI available/ mobile networt available and mobile data activated / ... ?", "OK"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText); Assert.IsTrue(subsequent.IsButtonVisible); Assert.AreEqual("Search lock", subsequent.LockitButtonText); Assert.IsTrue(subsequent.IsLockitButtonVisible); } /// /// Use case: Cancel reservation. /// Comment: Canceling reservation fails. /// Final state: Same as initial state. /// [Test] public void TestCancelReservationDoCancelReservationException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); bike.Id.Returns("0"); viewService.DisplayAlert(string.Empty, string.Format("Cancel reservation for bike {0}?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true)); connector.Command.DoCancelReservation(bike).Returns(x => throw new Exception("Exception message.")); bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object. bike.LockInfo.State.Returns(LockingState.UnknownDisconnected); // Requsthandler factory queries lock state to create appropriate request handler object. var subsequent = handler.HandleRequestOption1().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Canceling reservation..."; connector.Command.DoCancelReservation(bike); // Booking must be performed bikesViewModel.ActionText = ""; viewService.DisplayAlert( "Error when canceling the reservation!", "Exception message.", "OK"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", subsequent.ButtonText); Assert.IsTrue(subsequent.IsButtonVisible); Assert.AreEqual("Search lock", subsequent.LockitButtonText); Assert.IsTrue(subsequent.IsLockitButtonVisible); } /// /// Use case: Search. /// Final state: reserved closed /// [Test] public void TestSearch() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var timeOuts = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); bike.Id.Returns("0"); locks.ConnectAsync(Arg.Any(), Arg.Any()) .Returns(Task.FromResult(new LockInfoTdo.Builder { State = LockitLockingState.Closed }.Build())); locks.TimeOut.Returns(timeOuts); viewService.DisplayAlert(string.Empty, string.Format("Rent bike {0} and open lock?", "Nr. 0"), "Yes", "No").Returns(Task.FromResult(true)); locks[0].OpenAsync() .Returns(Task.FromResult((LockitLockingState?)LockitLockingState.Open)); // Return lock state indicating success bike.State.Value.Returns(InUseStateEnum.Booked); // Booking call leads to setting of state to booked. var subsequent = handler.HandleRequestOption2().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Request server..."; connector.Command.CalculateAuthKeys(bike); bikesViewModel.ActionText = "Searching lock..."; locks.ConnectAsync(Arg.Any(), Arg.Any()); bikesViewModel.ActionText = ""; bikesViewModel.ActionText = "Renting bike..."; connector.Command.DoBook(bike); // Booking must be performed bikesViewModel.ActionText = "Opening lock..."; locks.Received()[0].OpenAsync(); // Lock must be opened bikesViewModel.ActionText = "Reading charging level..."; locks[0].GetBatteryPercentageAsync(); bikesViewModel.ActionText = "Updating lock state..."; connector.Command.UpdateLockingStateAsync(bike, null); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Close lock & return bike", subsequent.ButtonText); Assert.IsTrue(subsequent.IsButtonVisible); Assert.AreEqual("Close lock", subsequent.LockitButtonText); Assert.IsTrue(subsequent.IsLockitButtonVisible); } /// /// Use case: Search. /// Final state: Same as initial state. /// [Test] public void TestSearchCalculateAuthKeysFailsWebConnectFailureException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); connector.Command.CalculateAuthKeys(bike).Returns(x => throw new WebConnectFailureException("Context info.", new Exception("Tst"))); bike.State.Value.Returns(InUseStateEnum.Booked); bike.LockInfo.State.Returns(LockingState.UnknownFromHardwareError); var subsequent = handler.HandleRequestOption2().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Request server..."; bikesViewModel.ActionText = ""; viewService.DisplayAlert("Error when connecting to lock!", "Internet must be reachable to connect to lock of reserved bike.\r\nContext info.\r\nIs WIFI available/ mobile networt available and mobile data activated / ... ?", "OK"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", handler.ButtonText); Assert.IsTrue(handler.IsButtonVisible); Assert.AreEqual("Search lock", handler.LockitButtonText); Assert.IsTrue(handler.IsLockitButtonVisible); } /// /// Use case: Search. /// Final state: Same as initial state. /// [Test] public void TestSearchCalculateAuthKeysFailsException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); connector.Command.CalculateAuthKeys(bike).Returns(x => throw new Exception("Exception message.")); bike.State.Value.Returns(InUseStateEnum.Booked); bike.LockInfo.State.Returns(LockingState.UnknownFromHardwareError); var subsequent = handler.HandleRequestOption2().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Request server..."; bikesViewModel.ActionText = ""; viewService.DisplayAlert("Error when connecting to lock!", "Communication error during lock search.\r\nException message.", "OK"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", handler.ButtonText); Assert.IsTrue(handler.IsButtonVisible); Assert.AreEqual("Search lock", handler.LockitButtonText); Assert.IsTrue(handler.IsLockitButtonVisible); } /// /// Use case: Search. /// Final state: Same as initial state. /// [Test] public void TestSearchConnectFailsOutOfReachException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var timeOuts = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); locks.ConnectAsync(Arg.Any(), Arg.Any()) .Returns>(x => { throw new OutOfReachException(); }); locks.TimeOut.Returns(timeOuts); bike.State.Value.Returns(InUseStateEnum.Booked); var subsequent = handler.HandleRequestOption2().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Request server..."; connector.Command.CalculateAuthKeys(bike); bikesViewModel.ActionText = "Searching lock..."; locks.ConnectAsync(Arg.Any(), Arg.Any()); bikesViewModel.ActionText = ""; viewService.DisplayAlert( "Error when connecting to lock!", "Lock can only be found when reserved bike is nearby.", "Retry", "Cancel"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", handler.ButtonText); Assert.IsTrue(handler.IsButtonVisible); Assert.AreEqual("Search lock", handler.LockitButtonText); Assert.IsTrue(handler.IsLockitButtonVisible); } /// /// Use case: Search. /// Final state: Same as initial state. /// [Test] public void TestSearchConnectFailsException() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var timeOuts = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); locks.ConnectAsync(Arg.Any(), Arg.Any()) .Returns>(x => throw new Exception("Execption message.")); locks.TimeOut.Returns(timeOuts); bike.State.Value.Returns(InUseStateEnum.Booked); var subsequent = handler.HandleRequestOption2().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Request server..."; connector.Command.CalculateAuthKeys(bike); bikesViewModel.ActionText = "Searching lock..."; locks.ConnectAsync(Arg.Any(), Arg.Any()); bikesViewModel.ActionText = ""; viewService.DisplayAdvancedAlert( "Error when connecting to lock!", "Lock of reserved bike can not be found.", "", "Retry", "Cancel"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", handler.ButtonText); Assert.IsTrue(handler.IsButtonVisible); Assert.AreEqual("Search lock", handler.LockitButtonText); Assert.IsTrue(handler.IsLockitButtonVisible); } /// /// Use case: Search. /// Final state: Same as initial state. /// [Test] public void TestSearchConnectNotOpen() { var bike = Substitute.For(); var connector = Substitute.For(); var command = Substitute.For(); var geolocation = Substitute.For(); var locks = Substitute.For(); var pollingManager = Substitute.For(); var viewService = Substitute.For(); var bikesViewModel = Substitute.For(); var activeUser = Substitute.For(); var timeOuts = Substitute.For(); var handler = new ReservedDisconnected( bike, () => true, // isConnectedDelegate (isConnexted) => connector, geolocation, locks, () => pollingManager, Substitute.For(), viewService, bikesViewModel, activeUser); locks.ConnectAsync(Arg.Any(), Arg.Any()) .Returns(new LockInfoTdo.Builder { State = null }.Build()); locks.TimeOut.Returns(timeOuts); bike.State.Value.Returns(InUseStateEnum.Booked); var subsequent = handler.HandleRequestOption2().Result; // Verify behaviour Received.InOrder(() => { bikesViewModel.Received(1).IsIdle = false; // GUI must be locked bikesViewModel.ActionText = "One moment please..."; pollingManager.StopUpdatePeridically(); // Polling must be stopped before any COPR and lock service action bikesViewModel.ActionText = "Request server..."; connector.Command.CalculateAuthKeys(bike); bikesViewModel.ActionText = "Searching lock..."; locks.ConnectAsync(Arg.Any(), Arg.Any()); bikesViewModel.ActionText = ""; viewService.DisplayAlert("Error when connecting to lock!", "Lock status of the reserved bike could not be determined.", "OK"); bikesViewModel.ActionText = "Updating..."; pollingManager.StartUpdateAyncPeridically(); // polling must be restarted again bikesViewModel.ActionText = ""; bikesViewModel.Received(1).IsIdle = true; // GUI must be unlocked }); // Verify state after action Assert.AreEqual("Cancel bike reservation", handler.ButtonText); Assert.IsTrue(handler.IsButtonVisible); Assert.AreEqual("Search lock", handler.LockitButtonText); Assert.IsTrue(handler.IsLockitButtonVisible); } } }