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
{
	[TestFixture]
	public class TestReservedOpen
	{
		/// <summary>
		/// Test construction of object.
		/// </summary>
		[Test]
		public void Testctor()
		{
			var handler = new ReservedOpen(
				Substitute.For<IBikeInfoMutable>(),
				() => true, // isConnectedDelegate
				(isConnexted) => Substitute.For<IConnector>(),
				Substitute.For<IGeolocation>(),
				Substitute.For<ILocksService>(),
				() => Substitute.For<IPollingUpdateTaskManager>(),
				Substitute.For<ISmartDevice>(),
				Substitute.For<IViewService>(),
				Substitute.For<IBikesViewModel>(),
				Substitute.For<IUser>());

			// Verify prerequisites.
			Assert.AreEqual("Rad zurückgeben oder mieten", handler.ButtonText);
			Assert.IsTrue(handler.IsButtonVisible);
			Assert.AreEqual("Alarm/ Sounds verwalten", handler.LockitButtonText);
			Assert.IsFalse(handler.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: User books bike.
		/// Final state: Booked.
		/// </summary>
		[Test]
		public void TestBook()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0  abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(false));

			bike.State.Value.Returns(InUseStateEnum.Booked); // Reqesthandler factory queries state to create appropriate request handler object.
			bike.LockInfo.State.Returns(LockingState.Open); // 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 = "Reading charging level...";
				locks[0].GetBatteryPercentageAsync();
				bikesViewModel.ActionText = "Renting bike...";
				connector.Command.DoBook(bike);
				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);
		}

		/// <summary>
		/// Use case: User books bike.
		/// Final state: Reserved closed.
		/// </summary>
		[Test]
		public void TestBookBookFailsWebConnectFailureException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0  abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(false));

			connector.Command.DoBook(bike).Returns(x => throw new WebConnectFailureException("Context info.", new Exception("Tst")));

			locks[0].CloseAsync().Returns(LockitLockingState.Closed);

			bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries 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 = "Reading charging level...";
				locks[0].GetBatteryPercentageAsync();
				bikesViewModel.ActionText = "Renting bike...";
				connector.Command.DoBook(bike);
				bikesViewModel.ActionText = "";
				viewService.DisplayAlert(
					"Connection error when renting the bike!",
					string.Format("Attention: Lock is closed!\r\n{0}\r\n{1}", "Context info.", "Is WIFI available/ mobile network available and mobile data activated / ... ?"),
					"OK");
				bikesViewModel.ActionText = "Wiederverschließe Schloss...";
				locks[0].CloseAsync();
				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("Open lock & rent bike", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: User books bike.
		/// Final state: Reserved closed.
		/// </summary>
		[Test]
		public void TestBookBookFailsException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0  abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(false));

			connector.Command.DoBook(bike).Returns(x => throw new Exception("Exception message."));

			locks[0].CloseAsync().Returns(LockitLockingState.Closed);

			bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries 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 = "Reading charging level...";
				locks[0].GetBatteryPercentageAsync();
				bikesViewModel.ActionText = "Renting bike...";
				connector.Command.DoBook(bike);
				bikesViewModel.ActionText = "";
				viewService.DisplayAlert("Error when renting the bike!", "Attention: Lock is closed!\r\nException message.", "OK");
				bikesViewModel.ActionText = "Wiederverschließe Schloss...";
				locks[0].CloseAsync();
				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("Open lock & rent bike", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Close lock and cancel reservation.
		/// Final state: Booked.
		/// </summary>
		[Test]
		public void TestCloseLockAndCancelReservation()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

			locks[0].CloseAsync().Returns(LockitLockingState.Closed);

			bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries 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 = "<h4><b>Lock is closing.<br/>Please wait until it is completely closed.</b></h4>";
				locks[0].CloseAsync();
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike);
				bikesViewModel.ActionText = "Disconnecting lock...";
				locks.DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());
				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);
		}

		/// <summary>
		/// Use case: Close lock and cancel reservation.
		/// Final state: Reserved open.
		/// </summary>
		[Test]
		public void TestCloseLockAndCancelReservationCloseFailsOutOfReachException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(
				string.Empty,
				"Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?",
				"Zurückgeben",
				"Mieten").Returns(Task.FromResult(true));

			locks[0].CloseAsync()
				.Returns<Task<LockitLockingState?>>(x => { throw new OutOfReachException(); });

			bike.State.Value.Returns(InUseStateEnum.Reserved); // Reqesthandler factory queries state to create appropriate request handler object.
			bike.LockInfo.State.Returns(LockingState.Open);

			var subsequent = handler.HandleRequestOption1().Result;

			locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

			// 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 = "<h4><b>Lock is closing.<br/>Please wait until it is completely closed.</b></h4>";
				locks[0].CloseAsync();
				bikesViewModel.ActionText = "";
				viewService.DisplayAlert(
					"Lock can not be closed!",
					"Lock cannot be closed until bike is near.\r\nPlease try again to close bike or report bike to support!",
					"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);
		}

		/// <summary>
		/// Use case: Close lock and cancel reservation.
		/// Final state: Same as initial state.
		/// </summary>
		[Test]
		public void TestCloseLockAndCancelReservationCloseFailsException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(
				string.Empty,
				"Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?",
				"Zurückgeben",
				"Mieten").Returns(Task.FromResult(true));

			locks[0].CloseAsync()
				.Returns<Task<LockitLockingState?>>(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.Open);

			var subsequent = handler.HandleRequestOption1().Result;

			locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

			// 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 = "<h4><b>Lock is closing.<br/>Please wait until it is completely closed.</b></h4>";
				locks[0].CloseAsync();
				bikesViewModel.ActionText = "";
				viewService.DisplayAlert(
					"Lock can not be closed!",
					"Please try to lock again or report bike to support!\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", subsequent.ButtonText);
			Assert.IsTrue(subsequent.IsButtonVisible);
			Assert.AreEqual("Search lock", subsequent.LockitButtonText);
			Assert.IsTrue(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Close lock and cancel reservation.
		/// Final state: Reserved closed.
		/// </summary>
		[Test]
		public void TestCloseLockAndCancelReservationCancelReservationInvalidAuthorizationResponseException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			var response = JsonConvert.DeserializeObject<AuthorizationResponse>(@"
            {
                  ""response"" : ""authorization"",
                  ""authcookie"" : ""4da3044c8657a04ba60e2eaa753bc51a"",
                  ""user_group"" : [ ""TINK"", ""Konrad"" ],
                  ""response_state"" : ""OK"",
                  ""apiserver"" : ""https://tinkwwp.copri-bike.de""
               }");

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

			locks[0].CloseAsync().Returns(LockitLockingState.Closed);

			connector.Command.DoCancelReservation(bike).Returns(x => throw new InvalidAuthorizationResponseException("mustermann@server.de", response));

			bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

			locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

			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 = "<h4><b>Lock is closing.<br/>Please wait until it is completely closed.</b></h4>";
				locks[0].CloseAsync();
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike);
				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("InvalidState", subsequent.ButtonText);
			Assert.IsFalse(subsequent.IsButtonVisible);
			Assert.AreEqual("InvalidState", subsequent.LockitButtonText);
			Assert.IsFalse(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Close lock and cancel reservation.
		/// Final state: Reserved closed.
		/// </summary>
		[Test]
		public void TestCloseLockAndCancelReservationCancelReservationWebConnectFailureException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

			locks[0].CloseAsync().Returns(LockitLockingState.Closed);

			connector.Command.DoCancelReservation(bike).Returns(x => throw new WebConnectFailureException("Context info", new Exception("chub")));

			bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

			var subsequent = handler.HandleRequestOption1().Result;

			locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

			// 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 = "<h4><b>Lock is closing.<br/>Please wait until it is completely closed.</b></h4>";
				locks[0].CloseAsync();
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike);
				bikesViewModel.ActionText = "";
				viewService.DisplayAlert(
					"Connection error when canceling the reservation!",
					"Context info\r\nIs WIFI available/ mobile network 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("InvalidState", subsequent.ButtonText);
			Assert.IsFalse(subsequent.IsButtonVisible);
			Assert.AreEqual("InvalidState", subsequent.LockitButtonText);
			Assert.IsFalse(subsequent.IsLockitButtonVisible);
		}

		/// <summary>
		/// Use case: Close lock and cancel reservation.
		/// Final state: Reserved closed.
		/// </summary>
		[Test]
		public void TestCloseLockAndCancelReservationCancelReservationException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var command = Substitute.For<ICommand>();
			var geolocation = Substitute.For<IGeolocation>();
			var locks = Substitute.For<ILocksService>();
			var pollingManager = Substitute.For<IPollingUpdateTaskManager>();
			var viewService = Substitute.For<IViewService>();
			var bikesViewModel = Substitute.For<IBikesViewModel>();
			var activeUser = Substitute.For<IUser>();

			var handler = new ReservedOpen(
				bike,
				() => true, // isConnectedDelegate
				(isConnexted) => connector,
				geolocation,
				locks,
				() => pollingManager,
				Substitute.For<ISmartDevice>(),
				viewService,
				bikesViewModel,
				activeUser);

			bike.Id.Returns("0");

			viewService.DisplayAlert(string.Empty, "Rad Nr. 0 abschließen und zurückgeben oder Rad mieten?", "Zurückgeben", "Mieten").Returns(Task.FromResult(true));

			locks[0].CloseAsync().Returns(LockitLockingState.Closed);

			connector.Command.DoCancelReservation(bike).Returns(x => throw new Exception("Exception message.", new Exception("chub")));

			bike.State.Value.Returns(InUseStateEnum.Disposable); // Reqesthandler factory queries state to create appropriate request handler object.

			var subsequent = handler.HandleRequestOption1().Result;

			locks.DidNotReceive().DisconnectAsync(Arg.Any<int>(), Arg.Any<Guid>());

			// 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 = "<h4><b>Lock is closing.<br/>Please wait until it is completely closed.</b></h4>";
				locks[0].CloseAsync();
				bikesViewModel.ActionText = "Canceling reservation...";
				connector.Command.DoCancelReservation(bike);
				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("InvalidState", subsequent.ButtonText);
			Assert.IsFalse(subsequent.IsButtonVisible);
			Assert.AreEqual("InvalidState", subsequent.LockitButtonText);
			Assert.IsFalse(subsequent.IsLockitButtonVisible);
		}
	}
}