SEBPatch/SafeExamBrowser.Client.Unit.../Responsibilities/BrowserResponsibilityTests.cs

351 lines
13 KiB
C#

/*
* Copyright (c) 2025 ETH Zürich, IT Services
*
* 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.Browser.Contracts;
using SafeExamBrowser.Browser.Contracts.Events;
using SafeExamBrowser.Client.Contracts;
using SafeExamBrowser.Client.Responsibilities;
using SafeExamBrowser.Communication.Contracts.Proxies;
using SafeExamBrowser.Configuration.Contracts;
using SafeExamBrowser.Core.Contracts.ResponsibilityModel;
using SafeExamBrowser.I18n.Contracts;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Server.Contracts;
using SafeExamBrowser.Server.Contracts.Data;
using SafeExamBrowser.Settings;
using SafeExamBrowser.UserInterface.Contracts.MessageBox;
using SafeExamBrowser.UserInterface.Contracts.Shell;
using SafeExamBrowser.UserInterface.Contracts.Windows;
namespace SafeExamBrowser.Client.UnitTests.Responsibilities
{
[TestClass]
public class BrowserResponsibilityTests
{
private AppConfig appConfig;
private Mock<IBrowserApplication> browser;
private ClientContext context;
private Mock<ICoordinator> coordinator;
private Mock<IMessageBox> messageBox;
private Mock<IRuntimeProxy> runtime;
private Mock<IServerProxy> server;
private AppSettings settings;
private Mock<ISplashScreen> splashScreen;
private Mock<ITaskbar> taskbar;
private BrowserResponsibility sut;
[TestInitialize]
public void Initialize()
{
var logger = new Mock<ILogger>();
var responsibilities = new Mock<IResponsibilityCollection<ClientTask>>();
appConfig = new AppConfig();
browser = new Mock<IBrowserApplication>();
context = new ClientContext();
coordinator = new Mock<ICoordinator>();
messageBox = new Mock<IMessageBox>();
runtime = new Mock<IRuntimeProxy>();
server = new Mock<IServerProxy>();
settings = new AppSettings();
splashScreen = new Mock<ISplashScreen>();
taskbar = new Mock<ITaskbar>();
context.AppConfig = appConfig;
context.Browser = browser.Object;
context.Responsibilities = responsibilities.Object;
context.Runtime = runtime.Object;
context.Server = server.Object;
context.Settings = settings;
sut = new BrowserResponsibility(
context,
coordinator.Object,
logger.Object,
messageBox.Object,
runtime.Object,
splashScreen.Object,
taskbar.Object);
sut.Assume(ClientTask.RegisterEvents);
}
[TestMethod]
public void MustAutoStartBrowser()
{
settings.Browser.EnableBrowser = true;
browser.SetupGet(b => b.AutoStart).Returns(true);
sut.Assume(ClientTask.AutoStartApplications);
browser.Verify(b => b.Start(), Times.Once);
browser.Reset();
browser.SetupGet(b => b.AutoStart).Returns(false);
sut.Assume(ClientTask.AutoStartApplications);
browser.Verify(b => b.Start(), Times.Never);
}
[TestMethod]
public void MustNotAutoStartBrowserIfNotEnabled()
{
settings.Browser.EnableBrowser = false;
browser.SetupGet(b => b.AutoStart).Returns(true);
sut.Assume(ClientTask.AutoStartApplications);
browser.Verify(b => b.Start(), Times.Never);
}
[TestMethod]
public void Browser_MustHandleUserIdentifierDetection()
{
var counter = 0;
var identifier = "abc123";
settings.SessionMode = SessionMode.Server;
server.Setup(s => s.SendUserIdentifier(It.IsAny<string>())).Returns(() => new ServerResponse(++counter == 3));
browser.Raise(b => b.UserIdentifierDetected += null, identifier);
server.Verify(s => s.SendUserIdentifier(It.Is<string>(id => id == identifier)), Times.Exactly(3));
}
[TestMethod]
public void Browser_MustTerminateIfRequested()
{
runtime.Setup(p => p.RequestShutdown()).Returns(new CommunicationResult(true));
browser.Raise(b => b.TerminationRequested += null);
runtime.Verify(p => p.RequestShutdown(), Times.Once);
}
[TestMethod]
public void Reconfiguration_MustAllowIfNoQuitPasswordSet()
{
var args = new DownloadEventArgs();
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
coordinator.Setup(c => c.RequestReconfigurationLock()).Returns(true);
runtime.Setup(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>())).Returns(new CommunicationResult(true));
browser.Raise(b => b.ConfigurationDownloadRequested += null, "filepath.seb", args);
args.Callback(true, string.Empty);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Once);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Once);
Assert.IsTrue(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustNotAllowWithQuitPasswordAndNoUrl()
{
var args = new DownloadEventArgs();
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
settings.Security.AllowReconfiguration = true;
settings.Security.QuitPasswordHash = "abc123";
runtime.Setup(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>())).Returns(new CommunicationResult(true));
browser.Raise(b => b.ConfigurationDownloadRequested += null, "filepath.seb", args);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Never);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Never);
Assert.IsFalse(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustNotAllowConcurrentExecution()
{
var args = new DownloadEventArgs();
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
coordinator.Setup(c => c.RequestReconfigurationLock()).Returns(false);
runtime.Setup(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>())).Returns(new CommunicationResult(true));
browser.Raise(b => b.ConfigurationDownloadRequested += null, "filepath.seb", args);
args.Callback?.Invoke(true, string.Empty);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Once);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Never);
Assert.IsFalse(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustAllowIfUrlMatches()
{
var args = new DownloadEventArgs { Url = "sebs://www.somehost.org/some/path/some_configuration.seb?query=123" };
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
coordinator.Setup(c => c.RequestReconfigurationLock()).Returns(true);
settings.Security.AllowReconfiguration = true;
settings.Security.QuitPasswordHash = "abc123";
settings.Security.ReconfigurationUrl = "sebs://www.somehost.org/some/path/*.seb?query=123";
runtime.Setup(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>())).Returns(new CommunicationResult(true));
browser.Raise(b => b.ConfigurationDownloadRequested += null, "filepath.seb", args);
args.Callback(true, string.Empty);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Once);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Once);
Assert.IsTrue(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustDenyIfNotAllowed()
{
var args = new DownloadEventArgs();
settings.Security.AllowReconfiguration = false;
settings.Security.QuitPasswordHash = "abc123";
browser.Raise(b => b.ConfigurationDownloadRequested += null, "filepath.seb", args);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Never);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Never);
Assert.IsFalse(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustDenyIfUrlDoesNotMatch()
{
var args = new DownloadEventArgs { Url = "sebs://www.somehost.org/some/path/some_configuration.seb?query=123" };
settings.Security.AllowReconfiguration = false;
settings.Security.QuitPasswordHash = "abc123";
settings.Security.ReconfigurationUrl = "sebs://www.somehost.org/some/path/other_configuration.seb?query=123";
browser.Raise(b => b.ConfigurationDownloadRequested += null, "filepath.seb", args);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Never);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Never);
Assert.IsFalse(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustCorrectlyHandleDownload()
{
var downloadPath = @"C:\Folder\Does\Not\Exist\filepath.seb";
var downloadUrl = @"https://www.host.abc/someresource.seb";
var filename = "filepath.seb";
var args = new DownloadEventArgs();
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
coordinator.Setup(c => c.RequestReconfigurationLock()).Returns(true);
messageBox.Setup(m => m.Show(
It.IsAny<TextKey>(),
It.IsAny<TextKey>(),
It.IsAny<MessageBoxAction>(),
It.IsAny<MessageBoxIcon>(),
It.IsAny<IWindow>())).Returns(MessageBoxResult.Yes);
runtime.Setup(r => r.RequestReconfiguration(
It.Is<string>(p => p == downloadPath),
It.Is<string>(u => u == downloadUrl))).Returns(new CommunicationResult(true));
settings.Security.AllowReconfiguration = true;
browser.Raise(b => b.ConfigurationDownloadRequested += null, filename, args);
args.Callback(true, downloadUrl, downloadPath);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Once);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Never);
runtime.Verify(r => r.RequestReconfiguration(It.Is<string>(p => p == downloadPath), It.Is<string>(u => u == downloadUrl)), Times.Once);
Assert.AreEqual(downloadPath, args.DownloadPath);
Assert.IsTrue(args.AllowDownload);
}
[TestMethod]
public void Reconfiguration_MustCorrectlyHandleFailedDownload()
{
var downloadPath = @"C:\Folder\Does\Not\Exist\filepath.seb";
var downloadUrl = @"https://www.host.abc/someresource.seb";
var filename = "filepath.seb";
var args = new DownloadEventArgs();
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
coordinator.Setup(c => c.RequestReconfigurationLock()).Returns(true);
messageBox.Setup(m => m.Show(
It.IsAny<TextKey>(),
It.IsAny<TextKey>(),
It.IsAny<MessageBoxAction>(),
It.IsAny<MessageBoxIcon>(),
It.IsAny<IWindow>())).Returns(MessageBoxResult.Yes);
runtime.Setup(r => r.RequestReconfiguration(
It.Is<string>(p => p == downloadPath),
It.Is<string>(u => u == downloadUrl))).Returns(new CommunicationResult(true));
settings.Security.AllowReconfiguration = true;
browser.Raise(b => b.ConfigurationDownloadRequested += null, filename, args);
args.Callback(false, downloadPath);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Once);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Once);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Never);
}
[TestMethod]
public void Reconfiguration_MustCorrectlyHandleFailedRequest()
{
var downloadPath = @"C:\Folder\Does\Not\Exist\filepath.seb";
var downloadUrl = @"https://www.host.abc/someresource.seb";
var filename = "filepath.seb";
var args = new DownloadEventArgs();
appConfig.TemporaryDirectory = @"C:\Folder\Does\Not\Exist";
coordinator.Setup(c => c.RequestReconfigurationLock()).Returns(true);
messageBox.Setup(m => m.Show(
It.IsAny<TextKey>(),
It.IsAny<TextKey>(),
It.IsAny<MessageBoxAction>(),
It.IsAny<MessageBoxIcon>(),
It.IsAny<IWindow>())).Returns(MessageBoxResult.Yes);
runtime.Setup(r => r.RequestReconfiguration(
It.Is<string>(p => p == downloadPath),
It.Is<string>(u => u == downloadUrl))).Returns(new CommunicationResult(false));
settings.Security.AllowReconfiguration = true;
browser.Raise(b => b.ConfigurationDownloadRequested += null, filename, args);
args.Callback(true, downloadUrl, downloadPath);
coordinator.Verify(c => c.RequestReconfigurationLock(), Times.Once);
coordinator.Verify(c => c.ReleaseReconfigurationLock(), Times.Once);
messageBox.Verify(m => m.Show(
It.IsAny<TextKey>(),
It.IsAny<TextKey>(),
It.IsAny<MessageBoxAction>(),
It.Is<MessageBoxIcon>(i => i == MessageBoxIcon.Error),
It.IsAny<IWindow>()), Times.Once);
runtime.Verify(r => r.RequestReconfiguration(It.IsAny<string>(), It.IsAny<string>()), Times.Once);
}
[TestMethod]
public void MustNotFailIfDependencyIsNull()
{
context.Browser = null;
sut.Assume(ClientTask.DeregisterEvents);
}
}
}