Extended unit tests for client component.

SafeExamBrowser.Client.UnitTests/ClientControllerTests.cs

@@ -28,6 +28,8 @@ using SafeExamBrowser.Logging.Contracts;
 using SafeExamBrowser.Monitoring.Contracts.Applications;
 using SafeExamBrowser.Monitoring.Contracts.Display;
 using SafeExamBrowser.Monitoring.Contracts.System;
+using SafeExamBrowser.Server.Contracts;
+using SafeExamBrowser.Server.Contracts.Data;
 using SafeExamBrowser.Settings;
 using SafeExamBrowser.Settings.Monitoring;
 using SafeExamBrowser.UserInterface.Contracts;
@@ -57,6 +59,7 @@ namespace SafeExamBrowser.Client.UnitTests
 		private Mock<IMessageBox> messageBox;
 		private Mock<IOperationSequence> operationSequence;
 		private Mock<IRuntimeProxy> runtimeProxy;
+		private Mock<IServerProxy> server;
 		private Guid sessionId;
 		private AppSettings settings;
 		private Mock<Action> shutdown;
@@ -85,6 +88,7 @@ namespace SafeExamBrowser.Client.UnitTests
 			messageBox = new Mock<IMessageBox>();
 			operationSequence = new Mock<IOperationSequence>();
 			runtimeProxy = new Mock<IRuntimeProxy>();
+			server = new Mock<IServerProxy>();
 			sessionId = Guid.NewGuid();
 			settings = new AppSettings();
 			shutdown = new Mock<Action>();
@@ -120,6 +124,7 @@ namespace SafeExamBrowser.Client.UnitTests
 			context.AppConfig = appConfig;
 			context.Browser = browser.Object;
 			context.ClientHost = clientHost.Object;
+			context.Server = server.Object;
 			context.SessionId = sessionId;
 			context.Settings = settings;
 		}
@@ -192,6 +197,25 @@ namespace SafeExamBrowser.Client.UnitTests
 			Assert.IsTrue(boundsTaskbar == 4);
 		}
 
+		[TestMethod]
+		public void ApplicationMonitor_MustPermitApplicationIfChosenByUserAfterFailedTermination()
+		{
+			var lockScreen = new Mock<ILockScreen>();
+			var result = new LockScreenResult();
+
+			lockScreen.Setup(l => l.WaitForResult()).Returns(result);
+			runtimeProxy.Setup(p => p.RequestShutdown()).Returns(new CommunicationResult(true));
+			uiFactory
+				.Setup(f => f.CreateLockScreen(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<IEnumerable<LockScreenOption>>()))
+				.Returns(lockScreen.Object)
+				.Callback<string, string, IEnumerable<LockScreenOption>>((m, t, o) => result.OptionId = o.First().Id);
+
+			sut.TryStart();
+			applicationMonitor.Raise(m => m.TerminationFailed += null, new List<RunningApplication>());
+
+			runtimeProxy.Verify(p => p.RequestShutdown(), Times.Never);
+		}
+
 		[TestMethod]
 		public void ApplicationMonitor_MustRequestShutdownIfChosenByUserAfterFailedTermination()
 		{
@@ -288,6 +312,21 @@ namespace SafeExamBrowser.Client.UnitTests
 				It.Is<IWindow>(w => w == lockScreen.Object)), Times.Exactly(attempt - 1));
 		}
 
+		[TestMethod]
+		public void Browser_MustHandleSessionIdentifierDetection()
+		{
+			var counter = 0;
+			var identifier = "abc123";
+
+			settings.SessionMode = SessionMode.Server;
+			server.Setup(s => s.SendSessionIdentifier(It.IsAny<string>())).Returns(() => new ServerResponse(++counter == 3));
+
+			sut.TryStart();
+			browser.Raise(b => b.SessionIdentifierDetected += null, identifier);
+
+			server.Verify(s => s.SendSessionIdentifier(It.Is<string>(id => id == identifier)), Times.Exactly(3));
+		}
+
 		[TestMethod]
 		public void Browser_MustTerminateIfRequested()
 		{
@@ -299,6 +338,26 @@ namespace SafeExamBrowser.Client.UnitTests
 			runtimeProxy.Verify(p => p.RequestShutdown(), Times.Once);
 		}
 
+		[TestMethod]
+		public void Communication_MustCorrectlyHandleExamSelection()
+		{
+			var args = new ExamSelectionRequestEventArgs
+			{
+				Exams = new List<(string id, string lms, string name, string url)> { ("", "", "", "") },
+				RequestId = Guid.NewGuid()
+			};
+			var dialog = new Mock<IExamSelectionDialog>();
+
+			dialog.Setup(d => d.Show(It.IsAny<IWindow>())).Returns(new ExamSelectionDialogResult { Success = true });
+			uiFactory.Setup(f => f.CreateExamSelectionDialog(It.IsAny<IEnumerable<Exam>>())).Returns(dialog.Object);
+
+			sut.TryStart();
+			clientHost.Raise(c => c.ExamSelectionRequested += null, args);
+
+			runtimeProxy.Verify(p => p.SubmitExamSelectionResult(It.Is<Guid>(g => g == args.RequestId), true, null), Times.Once);
+			uiFactory.Verify(f => f.CreateExamSelectionDialog(It.IsAny<IEnumerable<Exam>>()), Times.Once);
+		}
+
 		[TestMethod]
 		public void Communication_MustCorrectlyHandleMessageBoxRequest()
 		{
@@ -377,6 +436,22 @@ namespace SafeExamBrowser.Client.UnitTests
 				It.IsAny<IWindow>()), Times.Once);
 		}
 
+		[TestMethod]
+		public void Communication_MustCorrectlyHandleServerCommunicationFailure()
+		{
+			var args = new ServerFailureActionRequestEventArgs { RequestId = Guid.NewGuid() };
+			var dialog = new Mock<IServerFailureDialog>();
+
+			dialog.Setup(d => d.Show(It.IsAny<IWindow>())).Returns(new ServerFailureDialogResult());
+			uiFactory.Setup(f => f.CreateServerFailureDialog(It.IsAny<string>(), It.IsAny<bool>())).Returns(dialog.Object);
+
+			sut.TryStart();
+			clientHost.Raise(c => c.ServerFailureActionRequested += null, args);
+
+			runtimeProxy.Verify(r => r.SubmitServerFailureActionResult(It.Is<Guid>(g => g == args.RequestId), It.IsAny<bool>(), It.IsAny<bool>(), It.IsAny<bool>()), Times.Once);
+			uiFactory.Verify(f => f.CreateServerFailureDialog(It.IsAny<string>(), It.IsAny<bool>()), Times.Once);
+		}
+
 		[TestMethod]
 		public void Communication_MustCorrectlyInitiateShutdown()
 		{
@@ -463,6 +538,21 @@ namespace SafeExamBrowser.Client.UnitTests
 			Assert.IsTrue(boundsTaskbar == 3);
 		}
 
+		[TestMethod]
+		public void DisplayMonitor_MustShowLockScreenOnDisplayChange()
+		{
+			var lockScreen = new Mock<ILockScreen>();
+
+			displayMonitor.Setup(m => m.ValidateConfiguration(It.IsAny<DisplaySettings>())).Returns(new ValidationResult { IsAllowed = false });
+			lockScreen.Setup(l => l.WaitForResult()).Returns(new LockScreenResult());
+			uiFactory.Setup(f => f.CreateLockScreen(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<IEnumerable<LockScreenOption>>())).Returns(lockScreen.Object);
+
+			sut.TryStart();
+			displayMonitor.Raise(d => d.DisplayChanged += null);
+
+			lockScreen.Verify(l => l.Show(), Times.Once);
+		}
+
 		[TestMethod]
 		public void Operations_MustAskForAutomaticApplicationTermination()
 		{
@@ -785,6 +875,17 @@ namespace SafeExamBrowser.Client.UnitTests
 				It.IsAny<IWindow>()), Times.Once);
 		}
 
+		[TestMethod]
+		public void Server_MustInitiateShutdownOnEvent()
+		{
+			runtimeProxy.Setup(r => r.RequestShutdown()).Returns(new CommunicationResult(true));
+
+			sut.TryStart();
+			server.Raise(s => s.TerminationRequested += null);
+
+			runtimeProxy.Verify(p => p.RequestShutdown(), Times.Once);
+		}
+
 		[TestMethod]
 		public void Shutdown_MustAskUserToConfirm()
 		{
@@ -1103,6 +1204,59 @@ namespace SafeExamBrowser.Client.UnitTests
 			browser.Verify(b => b.Start(), Times.Never);
 		}
 
+		[TestMethod]
+		public void SystemMonitor_MustShowLockScreenOnSessionSwitch()
+		{
+			var lockScreen = new Mock<ILockScreen>();
+
+			settings.Service.IgnoreService = true;
+			lockScreen.Setup(l => l.WaitForResult()).Returns(new LockScreenResult());
+			uiFactory.Setup(f => f.CreateLockScreen(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<IEnumerable<LockScreenOption>>())).Returns(lockScreen.Object);
+
+			sut.TryStart();
+			systemMonitor.Raise(m => m.SessionSwitched += null);
+
+			lockScreen.Verify(l => l.Show(), Times.Once);
+		}
+
+		[TestMethod]
+		public void SystemMonitor_MustTerminateIfRequestedByUser()
+		{
+			var lockScreen = new Mock<ILockScreen>();
+			var result = new LockScreenResult();
+
+			settings.Service.IgnoreService = true;
+			lockScreen.Setup(l => l.WaitForResult()).Returns(result);
+			runtimeProxy.Setup(r => r.RequestShutdown()).Returns(new CommunicationResult(true));
+			uiFactory
+				.Setup(f => f.CreateLockScreen(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<IEnumerable<LockScreenOption>>()))
+				.Callback(new Action<string, string, IEnumerable<LockScreenOption>>((message, title, options) => result.OptionId = options.Last().Id))
+				.Returns(lockScreen.Object);
+
+			sut.TryStart();
+			systemMonitor.Raise(m => m.SessionSwitched += null);
+
+			lockScreen.Verify(l => l.Show(), Times.Once);
+			runtimeProxy.Verify(p => p.RequestShutdown(), Times.Once);
+		}
+
+		[TestMethod]
+		public void SystemMonitor_MustDoNothingIfSessionSwitchAllowed()
+		{
+			var lockScreen = new Mock<ILockScreen>();
+
+			settings.Service.IgnoreService = false;
+			settings.Service.DisableUserLock = false;
+			settings.Service.DisableUserSwitch = false;
+			lockScreen.Setup(l => l.WaitForResult()).Returns(new LockScreenResult());
+			uiFactory.Setup(f => f.CreateLockScreen(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<IEnumerable<LockScreenOption>>())).Returns(lockScreen.Object);
+
+			sut.TryStart();
+			systemMonitor.Raise(m => m.SessionSwitched += null);
+
+			lockScreen.Verify(l => l.Show(), Times.Never);
+		}
+
 		[TestMethod]
 		public void TerminationActivator_MustCorrectlyInitiateShutdown()
 		{

SafeExamBrowser.Client.UnitTests/Operations/ProctoringOperationTests.cs

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2021 ETH Zürich, Educational Development and Technology (LET)
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using SafeExamBrowser.Client.Operations;
+using SafeExamBrowser.Core.Contracts.Notifications;
+using SafeExamBrowser.Core.Contracts.OperationModel;
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Proctoring.Contracts;
+using SafeExamBrowser.Settings;
+using SafeExamBrowser.Settings.Proctoring;
+using SafeExamBrowser.UserInterface.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.Shell;
+
+namespace SafeExamBrowser.Client.UnitTests.Operations
+{
+	[TestClass]
+	public class ProctoringOperationTests
+	{
+		private Mock<IActionCenter> actionCenter;
+		private ClientContext context;
+		private Mock<IProctoringController> controller;
+		private Mock<ILogger> logger;
+		private Mock<INotification> notification;
+		private AppSettings settings;
+		private Mock<ITaskbar> taskbar;
+		private Mock<IUserInterfaceFactory> uiFactory;
+
+		private ProctoringOperation sut;
+
+		[TestInitialize]
+		public void Initialize()
+		{
+			actionCenter = new Mock<IActionCenter>();
+			context = new ClientContext();
+			controller = new Mock<IProctoringController>();
+			logger = new Mock<ILogger>();
+			notification = new Mock<INotification>();
+			settings = new AppSettings();
+			taskbar = new Mock<ITaskbar>();
+			uiFactory = new Mock<IUserInterfaceFactory>();
+
+			context.Settings = settings;
+			sut = new ProctoringOperation(actionCenter.Object, context, controller.Object, logger.Object, notification.Object, taskbar.Object, uiFactory.Object);
+		}
+
+		[TestMethod]
+		public void Perform_MustInitializeProctoringCorrectly()
+		{
+			settings.Proctoring.Enabled = true;
+			settings.Proctoring.ShowTaskbarNotification = true;
+
+			Assert.AreEqual(OperationResult.Success, sut.Perform());
+
+			actionCenter.Verify(a => a.AddNotificationControl(It.IsAny<INotificationControl>()), Times.Once);
+			controller.Verify(c => c.Initialize(It.Is<ProctoringSettings>(s => s == settings.Proctoring)));
+			notification.VerifyNoOtherCalls();
+			taskbar.Verify(t => t.AddNotificationControl(It.IsAny<INotificationControl>()), Times.Once);
+			uiFactory.Verify(u => u.CreateNotificationControl(It.Is<INotification>(n => n == notification.Object), Location.ActionCenter), Times.Once);
+			uiFactory.Verify(u => u.CreateNotificationControl(It.Is<INotification>(n => n == notification.Object), Location.Taskbar), Times.Once);
+		}
+
+		[TestMethod]
+		public void Perform_MustDoNothingIfNotEnabled()
+		{
+			settings.Proctoring.Enabled = false;
+
+			Assert.AreEqual(OperationResult.Success, sut.Perform());
+
+			actionCenter.VerifyNoOtherCalls();
+			controller.VerifyNoOtherCalls();
+			notification.VerifyNoOtherCalls();
+			taskbar.VerifyNoOtherCalls();
+			uiFactory.VerifyNoOtherCalls();
+		}
+
+		[TestMethod]
+		public void Revert_MustFinalizeProctoringCorrectly()
+		{
+			settings.Proctoring.Enabled = true;
+
+			Assert.AreEqual(OperationResult.Success, sut.Revert());
+
+			actionCenter.VerifyNoOtherCalls();
+			controller.Verify(c => c.Terminate(), Times.Once);
+			notification.Verify(n => n.Terminate(), Times.Once);
+			taskbar.VerifyNoOtherCalls();
+			uiFactory.VerifyNoOtherCalls();
+		}
+
+		[TestMethod]
+		public void Revert_MustDoNothingIfNotEnabled()
+		{
+			settings.Proctoring.Enabled = false;
+
+			Assert.AreEqual(OperationResult.Success, sut.Revert());
+
+			actionCenter.VerifyNoOtherCalls();
+			controller.VerifyNoOtherCalls();
+			notification.VerifyNoOtherCalls();
+			taskbar.VerifyNoOtherCalls();
+			uiFactory.VerifyNoOtherCalls();
+		}
+	}
+}

SafeExamBrowser.Client.UnitTests/Operations/ServerOperationTests.cs

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2021 ETH Zürich, Educational Development and Technology (LET)
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using SafeExamBrowser.Client.Operations;
+using SafeExamBrowser.Configuration.Contracts;
+using SafeExamBrowser.Core.Contracts.OperationModel;
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Server.Contracts;
+using SafeExamBrowser.Settings;
+using SafeExamBrowser.Settings.Server;
+
+namespace SafeExamBrowser.Client.UnitTests.Operations
+{
+	[TestClass]
+	public class ServerOperationTests
+	{
+		private AppConfig appConfig;
+		private ClientContext context;
+		private Mock<ILogger> logger;
+		private Mock<IServerProxy> server;
+		private AppSettings settings;
+
+		private ServerOperation sut;
+
+		[TestInitialize]
+		public void Initialize()
+		{
+			appConfig = new AppConfig();
+			context = new ClientContext();
+			logger = new Mock<ILogger>();
+			server = new Mock<IServerProxy>();
+			settings = new AppSettings();
+
+			context.AppConfig = appConfig;
+			context.Settings = settings;
+
+			sut = new ServerOperation(context, logger.Object, server.Object);
+		}
+
+		[TestMethod]
+		public void Perform_MustInitializeCorrectly()
+		{
+			settings.SessionMode = SessionMode.Server;
+
+			Assert.AreEqual(OperationResult.Success, sut.Perform());
+
+			server.Verify(s => s.Initialize(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<ServerSettings>()), Times.Once);
+			server.Verify(s => s.StartConnectivity(), Times.Once);
+		}
+
+		[TestMethod]
+		public void Perform_MustDoNothingIfNotActive()
+		{
+			settings.SessionMode = SessionMode.Normal;
+
+			Assert.AreEqual(OperationResult.Success, sut.Perform());
+
+			server.VerifyNoOtherCalls();
+		}
+
+		[TestMethod]
+		public void Revert_MustFinalizeCorrectly()
+		{
+			settings.SessionMode = SessionMode.Server;
+
+			Assert.AreEqual(OperationResult.Success, sut.Revert());
+
+			server.Verify(s => s.StopConnectivity(), Times.Once);
+		}
+
+		[TestMethod]
+		public void Revert_MustDoNothingIfNotActive()
+		{
+			settings.SessionMode = SessionMode.Normal;
+
+			Assert.AreEqual(OperationResult.Success, sut.Revert());
+
+			server.VerifyNoOtherCalls();
+		}
+	}
+}

SafeExamBrowser.Client.UnitTests/SafeExamBrowser.Client.UnitTests.csproj

@@ -99,7 +99,9 @@
     <Compile Include="Operations\DisplayMonitorOperationTests.cs" />
     <Compile Include="Operations\KeyboardInterceptorOperationTests.cs" />
     <Compile Include="Operations\MouseInterceptorOperationTests.cs" />
+    <Compile Include="Operations\ProctoringOperationTests.cs" />
     <Compile Include="Operations\RuntimeConnectionOperationTests.cs" />
+    <Compile Include="Operations\ServerOperationTests.cs" />
     <Compile Include="Operations\ShellOperationTests.cs" />
     <Compile Include="Communication\ClientHostTests.cs" />
     <Compile Include="Notifications\AboutNotificationControllerTests.cs" />
@@ -161,6 +163,10 @@
       <Project>{6d563a30-366d-4c35-815b-2c9e6872278b}</Project>
       <Name>SafeExamBrowser.Monitoring.Contracts</Name>
     </ProjectReference>
+    <ProjectReference Include="..\SafeExamBrowser.Proctoring.Contracts\SafeExamBrowser.Proctoring.Contracts.csproj">
+      <Project>{8e52bd1c-0540-4f16-b181-6665d43f7a7b}</Project>
+      <Name>SafeExamBrowser.Proctoring.Contracts</Name>
+    </ProjectReference>
     <ProjectReference Include="..\SafeExamBrowser.Server.Contracts\SafeExamBrowser.Server.Contracts.csproj">
       <Project>{db701e6f-bddc-4cec-b662-335a9dc11809}</Project>
       <Name>SafeExamBrowser.Server.Contracts</Name>

SafeExamBrowser.Client/CompositionRoot.cs

@@ -258,7 +258,7 @@ namespace SafeExamBrowser.Client
 		private IOperation BuildServerOperation()
 		{
 			var server = new ServerProxy(context.AppConfig, ModuleLogger(nameof(ServerProxy)), powerSupply, wirelessAdapter);
-			var operation = new ServerOperation(actionCenter, context, logger, server, taskbar);
+			var operation = new ServerOperation(context, logger, server);
 
 			context.Server = server;
 

SafeExamBrowser.Client/Operations/ServerOperation.cs

@@ -12,31 +12,21 @@ using SafeExamBrowser.I18n.Contracts;
 using SafeExamBrowser.Logging.Contracts;
 using SafeExamBrowser.Server.Contracts;
 using SafeExamBrowser.Settings;
-using SafeExamBrowser.UserInterface.Contracts.Shell;
 
 namespace SafeExamBrowser.Client.Operations
 {
 	internal class ServerOperation : ClientOperation
 	{
-		private readonly IActionCenter actionCenter;
 		private readonly ILogger logger;
 		private readonly IServerProxy server;
-		private readonly ITaskbar taskbar;
 
 		public override event ActionRequiredEventHandler ActionRequired { add { } remove { } }
 		public override event StatusChangedEventHandler StatusChanged;
 
-		public ServerOperation(
-			IActionCenter actionCenter,
-			ClientContext context,
-			ILogger logger,
-			IServerProxy server,
-			ITaskbar taskbar) : base(context)
+		public ServerOperation(ClientContext context, ILogger logger, IServerProxy server) : base(context)
 		{
-			this.actionCenter = actionCenter;
 			this.logger = logger;
 			this.server = server;
-			this.taskbar = taskbar;
 		}
 
 		public override OperationResult Perform()