seb-win-refactoring/SafeExamBrowser.Service.UnitTests/Operations/SessionInitializationOperationTests.cs

139 lines
4 KiB
C#

/*
* Copyright (c) 2020 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 System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Moq;
using SafeExamBrowser.Configuration.Contracts;
using SafeExamBrowser.Core.Contracts.OperationModel;
using SafeExamBrowser.Lockdown.Contracts;
using SafeExamBrowser.Logging.Contracts;
using SafeExamBrowser.Service.Operations;
using SafeExamBrowser.Settings;
namespace SafeExamBrowser.Service.UnitTests.Operations
{
[TestClass]
public class SessionInitializationOperationTests
{
private Mock<IAutoRestoreMechanism> autoRestoreMechanism;
private Mock<ILogger> logger;
private Mock<Func<string, EventWaitHandle>> serviceEventFactory;
private SessionContext sessionContext;
private SessionInitializationOperation sut;
[TestInitialize]
public void Initialize()
{
autoRestoreMechanism = new Mock<IAutoRestoreMechanism>();
logger = new Mock<ILogger>();
serviceEventFactory = new Mock<Func<string, EventWaitHandle>>();
sessionContext = new SessionContext();
serviceEventFactory.Setup(f => f.Invoke(It.IsAny<string>())).Returns(new EventStub());
sessionContext.AutoRestoreMechanism = autoRestoreMechanism.Object;
sessionContext.Configuration = new ServiceConfiguration
{
AppConfig = new AppConfig { ServiceEventName = $"{nameof(SafeExamBrowser)}-{nameof(SessionInitializationOperationTests)}" },
Settings = new AppSettings()
};
sut = new SessionInitializationOperation(logger.Object, serviceEventFactory.Object, sessionContext);
}
[TestMethod]
public void Perform_MustCloseOldAndInitializeNewServiceEvent()
{
var stub = new EventStub();
sessionContext.ServiceEvent = stub;
var result = sut.Perform();
Assert.AreEqual(OperationResult.Success, result);
Assert.IsTrue(stub.IsClosed);
Assert.AreNotSame(stub, sessionContext.ServiceEvent);
Assert.IsInstanceOfType(sessionContext.ServiceEvent, typeof(EventWaitHandle));
}
[TestMethod]
public void Perform_MustStopAutoRestoreMechanism()
{
var result = sut.Perform();
autoRestoreMechanism.Verify(m => m.Stop(), Times.Once);
Assert.AreEqual(OperationResult.Success, result);
}
[TestMethod]
public void Revert_MustDeleteConfiguration()
{
sessionContext.Configuration = new ServiceConfiguration();
sessionContext.ServiceEvent = new EventStub();
var result = sut.Revert();
Assert.AreEqual(OperationResult.Success, result);
Assert.IsNull(sessionContext.Configuration);
}
[TestMethod]
public void Revert_MustSetServiceEvent()
{
sessionContext.IsRunning = true;
sessionContext.ServiceEvent = new EventWaitHandle(false, EventResetMode.AutoReset);
var wasSet = false;
var task = Task.Run(() => wasSet = sessionContext.ServiceEvent.WaitOne(1000));
var result = sut.Revert();
task.Wait();
Assert.AreEqual(OperationResult.Success, result);
Assert.IsTrue(wasSet);
}
[TestMethod]
public void Revert_MustNotSetServiceEventIfNoSessionActive()
{
sessionContext.IsRunning = false;
sessionContext.ServiceEvent = new EventWaitHandle(false, EventResetMode.AutoReset);
var wasSet = false;
var task = Task.Run(() => wasSet = sessionContext.ServiceEvent.WaitOne(1000));
var result = sut.Revert();
task.Wait();
Assert.AreEqual(OperationResult.Success, result);
Assert.IsFalse(wasSet);
}
[TestMethod]
public void Revert_MustStartAutoRestoreMechanism()
{
var result = sut.Revert();
autoRestoreMechanism.Verify(m => m.Start(), Times.Once);
Assert.AreEqual(OperationResult.Success, result);
}
[TestMethod]
public void Revert_MustResetSessionFlag()
{
sessionContext.IsRunning = true;
var result = sut.Revert();
Assert.AreEqual(OperationResult.Success, result);
Assert.IsFalse(sessionContext.IsRunning);
}
}
}