public async Tasks.Task VerifyProjectAdded_DifferentProviders()
        {
            var projectGuid = Guid.NewGuid();

            var mockIVsStartupProjectsListService = IVsStartupProjectsListServiceFactory.CreateMockInstance(projectGuid);
            var iVsStartupProjectsListService     = mockIVsStartupProjectsListService.Object;

            var serviceProvider = SVsServiceProviderFactory.Create(iVsStartupProjectsListService);

            var debuggerLaunchProvider = CreateDebuggerLaunchProviderInstance();

            debuggerLaunchProvider.Debuggers.Add(GetLazyDebugLaunchProvider(debugs: false));
            debuggerLaunchProvider.Debuggers.Add(GetLazyDebugLaunchProvider(debugs: true));
            var activeConfiguredProjectWithLaunchProviders = IActiveConfiguredProjectFactory.ImplementValue(() => debuggerLaunchProvider);

            var startupProjectRegistrar = CreateInstance(
                projectGuid,
                serviceProvider,
                activeConfiguredProjectWithLaunchProviders);

            var testWrapperMethod = new DataFlowExtensionMethodCaller(new DataFlowExtensionMethodWrapperMock());

            startupProjectRegistrar.WrapperMethodCaller = testWrapperMethod;

            await startupProjectRegistrar.OnProjectFactoryCompletedAsync();

            mockIVsStartupProjectsListService.Verify(s => s.AddProject(ref projectGuid), Times.Once);
            mockIVsStartupProjectsListService.Verify(s => s.RemoveProject(ref projectGuid), Times.Never);
        }
        public async Tasks.Task VerifyProjectNotAdded()
        {
            var projectGuid = Guid.NewGuid();

            var mockIVsStartupProjectsListService = IVsStartupProjectsListServiceFactory.CreateMockInstance(projectGuid);
            var iVsStartupProjectsListService     = mockIVsStartupProjectsListService.Object;

            var serviceProvider = SVsServiceProviderFactory.Create(iVsStartupProjectsListService);

            var debuggerLaunchProvider = CreateDebuggerLaunchProviderInstance();

            debuggerLaunchProvider.Debuggers.Add(GetLazyDebugLaunchProvider(debugs: false));
            var activeConfiguredProjectWithLaunchProviders = IActiveConfiguredProjectFactory.ImplementValue(() => debuggerLaunchProvider);

            var startupProjectRegistrar = CreateInstance(
                serviceProvider,
                activeConfiguredProjectWithLaunchProviders);

            var testWrapperMethod = new DataFlowExtensionMethodCaller(new DataFlowExtensionMethodWrapperMock());

            startupProjectRegistrar.WrapperMethodCaller = testWrapperMethod;

            await startupProjectRegistrar.Load();

            var projectSubscriptionUpdate = IProjectSubscriptionUpdateFactory.FromJson(@"{
    ""ProjectChanges"": {
        ""ConfigurationGeneral"": {
            ""Difference"": {
                ""ChangedProperties"": [ ""Something"" ]
            }
        }
    }
}");
            await startupProjectRegistrar.ConfigurationGeneralRuleBlock_ChangedAsync(
                IProjectVersionedValueFactory <IProjectSubscriptionUpdate> .Create(projectSubscriptionUpdate));

            mockIVsStartupProjectsListService.Verify(s => s.RemoveProject(ref projectGuid), Times.Never);
            mockIVsStartupProjectsListService.Verify(s => s.AddProject(ref projectGuid), Times.Never);

            projectSubscriptionUpdate = IProjectSubscriptionUpdateFactory.FromJson(@"{
    ""ProjectChanges"": {
        ""ConfigurationGeneral"": {
            ""Difference"": {
                ""ChangedProperties"": [ ""ProjectGuid"" ]
            },
            ""After"": {
                ""Properties"": {
                   ""ProjectGuid"": ""GuidNotParsable""
                }
            }
        }
    }
}");
            await startupProjectRegistrar.ConfigurationGeneralRuleBlock_ChangedAsync(
                IProjectVersionedValueFactory <IProjectSubscriptionUpdate> .Create(projectSubscriptionUpdate));

            mockIVsStartupProjectsListService.Verify(s => s.RemoveProject(ref projectGuid), Times.Never);
            mockIVsStartupProjectsListService.Verify(s => s.AddProject(ref projectGuid), Times.Never);
        }