public async Task IsImplicitlyActive_WhenAccessedInActivateAsync_ReturnsTrue()
        {
            var project = ConfiguredProjectFactory.ImplementProjectConfiguration("Debug|AnyCPU");
            var service = CreateInstance(project, out ProjectValueDataSource <IConfigurationGroup <ProjectConfiguration> > source);

            service.Load();

            bool?result = null;
            var  implicitActiveService = IImplicitlyActiveServiceFactory.ImplementActivateAsync(() =>
            {
                result = service.IsImplicitlyActive;
            });

            service.ImplicitlyActiveServices.Add(implicitActiveService);

            var configurationGroups = IConfigurationGroupFactory.CreateFromConfigurationNames("Debug|AnyCPU");
            await source.SendAndCompleteAsync(configurationGroups, service.TargetBlock);

            Assert.True(result);
        }
        public async Task WhenActiveConfigurationChangesAndMatches_CallsActivateAsync(string[] configurations, string currentConfiguration)
        {
            var project = ConfiguredProjectFactory.ImplementProjectConfiguration(currentConfiguration);
            var service = CreateInstance(project, out ProjectValueDataSource <IConfigurationGroup <ProjectConfiguration> > source);

            service.Load();

            int callCount             = 0;
            var implicitActiveService = IImplicitlyActiveServiceFactory.ImplementActivateAsync(() =>
            {
                callCount++;
            });

            service.ImplicitlyActiveServices.Add(implicitActiveService);

            var configurationGroups = IConfigurationGroupFactory.CreateFromConfigurationNames(configurations);
            await source.SendAndCompleteAsync(configurationGroups, service.TargetBlock);

            Assert.Equal(1, callCount);
        }