在 nunit 中模拟单例 c# class

Question

我有一个 class，像这样：-

namespace CalendarIntegration.Google
{
    public sealed class GoogleSyncEventProcessor : ICalendarSyncEventProcessor
    {

public void ProcessEventRequest(object events, int soUserId, string calendarId, bool addLogs = false)
        {
            if (GoogleWatchManager.Instance.IsGoogleTwoWaySynLive)
            {

GoogleWatchManager 是进一步密封的class。

namespace CalendarIntegration.Google
{
    public sealed class GoogleWatchManager
    {
        readonly bool isGoogleTwoWaySyncLive = true;
        public GoogleWatchManager()
        {
                   isGoogleTwoWaySyncLive = false;
        }

 virtual public bool IsGoogleTwoWaySynLive
        {
            get { return isGoogleTwoWaySyncLive; }
        }

我想要 fake/mock GoogleWatchManager class 并在 nunit 测试用例中设置 GoogleWatchManager.Instance.IsGoogleTwoWaySynLive 的值，默认情况下它在 GoogleWatchManager class.

我尝试了以下方法，但它不起作用-

using EFBL;
using NUnit.Framework;
using EFBL.CalendarIntegration.CalendarSync;
using EFBL.CalendarIntegration.Google;
using Moq;

namespace EFBL.CalendarIntegration.Google
{
    [TestFixture]
    public class GoogleSyncEventProcessorSpec
    {
        public GoogleSyncEventProcessor google;
        public GoogleWatchManager googleManager;

        public void SetUp()
        {
        }

        [Test]
        public void ProcessEventRequest_NoEvents_ExceptionThrown()
        {
            var mock = new Mock<GoogleWatchManager>();
            mock.SetupGet(foo => foo.IsGoogleTwoWaySynLive).Returns(true);
            //             watch.Setup(i => i.IsGoogleTwoWaySynLive).Returns(false);
            // var mock = new Mock<GoogleWatchManager>().Object;
            GoogleSyncEventProcessor obj = GoogleSyncEventProcessor.Instance;

            obj.ProcessEventRequest(null, -1, "");
            //            isGoogleTwoWaySyncLive
        }
    }
}

非常感谢任何帮助，提前致谢。

Answer 1

解决方法如下：-

using System;
using EFBL;
using NUnit.Framework;
using TypeMock.ArrangeActAssert;
using System.Diagnostics;

namespace EFBL.CalendarIntegration.Google
{
    [TestFixture]
    public class GoogleSyncEventProcessorSpec
    {
        public GoogleSyncEventProcessor googleSync;
        public GoogleWatchManager googleManager;

        [SetUp]
        public void Init() {
            googleManager = Isolate.Fake.Instance<GoogleWatchManager>();
            googleSync = GoogleSyncEventProcessor.Instance;
        }

        [Test]
        public void RequiresThatTwoWaySyncLiveBeFalse()
        {
            Isolate.NonPublic.Property.WhenGetCalled(googleManager, "IsGoogleTwoWaySynLive").WillReturn(false);
            Assert.AreEqual(false, googleManager.IsGoogleTwoWaySynLive);
        }

在 nunit 中模拟单例 c# class

Mocking a singleton c# class in nunit

nunit

unit-testing

moq

mocking

sealed