C# HttpConfiguration.Initializer方法代码示例

        internal static HttpConfiguration ApplyControllerSettings(HttpControllerSettings settings, HttpConfiguration configuration)
        {
            if (!settings.IsFormatterCollectionInitialized && !settings.IsParameterBindingRuleCollectionInitialized && !settings.IsServiceCollectionInitialized)
            {
                return configuration;
            }

            // Create a clone of the original configuration, including its initialization rules.
            // Invoking Initialize therefore initializes the cloned config the same way as the original.
            HttpConfiguration newConfiguration = new HttpConfiguration(configuration, settings);
            newConfiguration.Initializer(newConfiguration);
            return newConfiguration;
        }

        public void ApplyControllerSettings_Clone_Can_Enable_Tracing_When_Original_Disabled_It()
        {
            // Arrange
            bool calledTrace = false;
            HttpConfiguration config = new HttpConfiguration();
            Mock<ITraceWriter> mockTracer = new Mock<ITraceWriter>() { CallBase = true };
            mockTracer.Setup(m => m.Trace(It.IsAny<HttpRequestMessage>(),
                                          It.IsAny<string>(),
                                          It.IsAny<TraceLevel>(),
                                          It.IsAny<Action<TraceRecord>>())).Callback(() => { calledTrace = true; });

            config.Initializer(config);    // ensures TraceManager is called, but it will be a NOP

            HttpControllerSettings settings = new HttpControllerSettings(config);
            settings.Services.Replace(typeof(ITraceWriter), mockTracer.Object);

            // Act
            HttpConfiguration clonedConfig = HttpConfiguration.ApplyControllerSettings(settings, config);
            clonedConfig.Services.GetContentNegotiator().Negotiate(typeof(string), new HttpRequestMessage(), Enumerable.Empty<MediaTypeFormatter>());

            // Assert
            Assert.True(calledTrace);
        }

        public void MapHttpAttributeRoutes_AddsLinkGenerationRoutes()
        {
            // Arrange
            HttpConfiguration config = new HttpConfiguration();
            var routePrefixes = new Collection<IRoutePrefix>() { };
            var routeProviders = new Collection<RouteAttribute>()
                {
                    new RouteAttribute("get1") { Name = "one" },
                    new RouteAttribute("get2") { Name = "two" },
                    new RouteAttribute("get3") { Name = "three" }
                };
            SetUpConfiguration(config, routePrefixes, routeProviders);

            // Act
            config.MapHttpAttributeRoutes();
            config.Initializer(config);

            // Assert
            HttpRouteCollection routes = config.Routes;
            Assert.Equal(4, routes.Count); // 1 attr route, plus 3 generation routes
            Assert.IsType<RouteCollectionRoute>(routes.ElementAt(0));
            for (int i = 1; i < 4; i++)
            {
                Assert.IsType<LinkGenerationRoute>(routes.ElementAt(i));
            }

            Assert.IsType<LinkGenerationRoute>(routes["one"]);
            Assert.IsType<LinkGenerationRoute>(routes["two"]);
            Assert.IsType<LinkGenerationRoute>(routes["three"]);
        }

        public void ApplyControllerSettings_Clone_Inherits_Tracing_On_PerController_Services()
        {
            // Arrange
            bool calledTrace = false;
            HttpConfiguration config = new HttpConfiguration();
            Mock<ITraceWriter> mockTracer = new Mock<ITraceWriter>() { CallBase = true };
            mockTracer.Setup(m => m.Trace(It.IsAny<HttpRequestMessage>(),
                                          It.IsAny<string>(),
                                          It.IsAny<TraceLevel>(),
                                          It.IsAny<Action<TraceRecord>>())).Callback(() => { calledTrace = true; });

            config.Services.Replace(typeof(ITraceWriter), mockTracer.Object);
            config.Initializer(config);    // installs tracer on original config

            HttpControllerSettings settings = new HttpControllerSettings(config);
            Mock<IContentNegotiator> mockNegotiator = new Mock<IContentNegotiator>() { CallBase = true };
            settings.Services.Replace(typeof(IContentNegotiator), mockNegotiator.Object);

            // Act
            HttpConfiguration clonedConfig = HttpConfiguration.ApplyControllerSettings(settings, config);
            clonedConfig.Services.GetContentNegotiator().Negotiate(typeof(string), new HttpRequestMessage(), Enumerable.Empty<MediaTypeFormatter>());

            // Assert
            Assert.True(calledTrace);
        }

        public void ApplyControllerSettings_Clone_Inherits_Tracing_On_PerController_Formatters()
        {
            // Arrange
            bool calledTrace = false;
            HttpConfiguration config = new HttpConfiguration();
            Mock<ITraceWriter> mockTracer = new Mock<ITraceWriter>() { CallBase = true };
            mockTracer.Setup(m => m.Trace(It.IsAny<HttpRequestMessage>(),
                                          It.IsAny<string>(),
                                          It.IsAny<TraceLevel>(),
                                          It.IsAny<Action<TraceRecord>>())).Callback(() => { calledTrace = true; });

            config.Services.Replace(typeof(ITraceWriter), mockTracer.Object);
            config.Initializer(config);    // installs tracer on original config

            HttpControllerSettings settings = new HttpControllerSettings(config);
            Mock<MediaTypeFormatter> mockFormatter = new Mock<MediaTypeFormatter>() { CallBase = true };
            settings.Formatters.Clear();
            settings.Formatters.Add(mockFormatter.Object);

            // Act
            HttpConfiguration clonedConfig = HttpConfiguration.ApplyControllerSettings(settings, config);
            clonedConfig.Formatters[0].GetPerRequestFormatterInstance(typeof(string), new HttpRequestMessage(), new MediaTypeHeaderValue("application/mine"));

            // Assert
            Assert.True(calledTrace);
        }

        public void Initialize_Can_Be_Chained()
        {
            // Arrange
            HttpConfiguration config1 = new HttpConfiguration();
            HttpConfiguration configPassedToAction1 = null;
            config1.Initializer = (c) => configPassedToAction1 = c;

            HttpConfiguration config2 = new HttpConfiguration();
            HttpConfiguration configPassedToAction2 = null;
            config2.Initializer = (c) => { config1.Initializer(config1); configPassedToAction2 = c; };

            // Act
            config2.Initializer(config2);

            // Assert
            Assert.Same(config1, configPassedToAction1);
            Assert.Same(config2, configPassedToAction2);
        }

        public void Initialize_Initializer_Can_Be_Reused()
        {
            // Arrange
            HttpConfiguration config1 = new HttpConfiguration();
            HttpConfiguration configPassedToAction = null;
            config1.Initializer = (c) => configPassedToAction = c;

            HttpConfiguration config2 = new HttpConfiguration();
            config2.Initializer = config1.Initializer;

            // Act
            config2.Initializer(config2);

            // Assert
            Assert.Same(config2, configPassedToAction);
        }

        public void Initialize_Default_Initializer_Can_Be_Removed()
        {
            // Arrange
            var config = new HttpConfiguration();
            config.Initializer = (c) => { };
            bool initializeCalled = false;
            Mock<ITraceManager> mock = new Mock<ITraceManager>() { CallBase = true };
            mock.Setup(m => m.Initialize(config)).Callback(() => initializeCalled = true);
            config.Services.Replace(typeof(ITraceManager), mock.Object);

            // Act
            config.Initializer(config);

            // Assert
            Assert.False(initializeCalled);
        }

        public void Initializer_Sets_Formatter_RequiredMemberSelector_By_Default()
        {
            // Arrange
            var config = new HttpConfiguration();
            Mock<MediaTypeFormatter> mockFormatter = new Mock<MediaTypeFormatter>() { CallBase = true };
            mockFormatter.Object.RequiredMemberSelector = null;

            config.Formatters.Clear();
            config.Formatters.Add(mockFormatter.Object);

            // Act
            config.Initializer(config);

            // Assert
            Assert.NotNull(mockFormatter.Object.RequiredMemberSelector);
        }

        public void Initializer_Initializes_TraceManager_By_Default()
        {
            // Arrange
            var config = new HttpConfiguration();
            Mock<ITraceManager> mock = new Mock<ITraceManager>() { CallBase = true };
            mock.Setup(m => m.Initialize(config)).Verifiable();
            config.Services.Replace(typeof(ITraceManager), mock.Object);

            // Act
            config.Initializer(config);

            // Assert
            mock.Verify();
        }