C# AsyncControllerActionInvoker類代碼示例

        public void InvokeAction_ActionThrowsException_ThreadAbort()
        {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            Assert.Throws<ThreadAbortException>(
                delegate { invoker.BeginInvokeAction(controllerContext, "ActionCallsThreadAbort", null, null); });
        }

        public void InvokeAction_ActionThrowsException_NotHandled()
        {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            Assert.Throws<Exception>(
                delegate { invoker.BeginInvokeAction(controllerContext, "ActionThrowsExceptionAndIsNotHandled", null, null); },
                @"Some exception text.");
        }

        public void InvokeAction_ActionNotFound() {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act
            IAsyncResult asyncResult = invoker.BeginInvokeAction(controllerContext, "ActionNotFound", null, null);
            bool retVal = invoker.EndInvokeAction(asyncResult);

            // Assert
            Assert.IsFalse(retVal);
        }

        public void InvokeAction_AuthorizationFilterShortCircuits() {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act
            IAsyncResult asyncResult = invoker.BeginInvokeAction(controllerContext, "AuthorizationFilterShortCircuits", null, null);
            bool retVal = invoker.EndInvokeAction(asyncResult);

            // Assert
            Assert.IsTrue(retVal);
            Assert.AreEqual("From authorization filter", ((TestController)controllerContext.Controller).Log);
        }

        public void InvokeAction_ActionThrowsException_Handled() {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            IAsyncResult asyncResult = invoker.BeginInvokeAction(controllerContext, "ActionThrowsExceptionAndIsHandled", null, null);
            Assert.IsNull(((TestController)controllerContext.Controller).Log, "Result filter shouldn't have executed yet.");

            bool retVal = invoker.EndInvokeAction(asyncResult);
            Assert.IsTrue(retVal);
            Assert.AreEqual("From exception filter", ((TestController)controllerContext.Controller).Log);
        }

        public void InvokeAction_AuthenticationFilterChallenges()
        {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act
            IAsyncResult asyncResult = invoker.BeginInvokeAction(controllerContext, "AuthenticationFilterChallenges", null, null);
            bool retVal = invoker.EndInvokeAction(asyncResult);

            // Assert
            Assert.True(retVal);
            Assert.Equal("From authentication filter challenge", ((TestController)controllerContext.Controller).Log);
        }

        public void InvokeAction_ResultThrowsException_NotHandled() {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            IAsyncResult asyncResult = invoker.BeginInvokeAction(controllerContext, "ResultThrowsExceptionAndIsNotHandled", null, null);
            ExceptionHelper.ExpectException<Exception>(
                delegate {
                    invoker.EndInvokeAction(asyncResult);
                },
                @"Some exception text.");
        }

        public void InvokeActionMethod_SynchronousDescriptor()
        {
            // Arrange
            ControllerContext controllerContext = new ControllerContext();
            Dictionary<string, object> parameters = new Dictionary<string, object>();
            ActionResult expectedResult = new ViewResult();

            Mock<ActionDescriptor> mockActionDescriptor = new Mock<ActionDescriptor>();
            mockActionDescriptor.Setup(d => d.Execute(controllerContext, parameters)).Returns(expectedResult);

            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act
            IAsyncResult asyncResult = invoker.BeginInvokeActionMethod(controllerContext, mockActionDescriptor.Object, parameters, null, null);
            ActionResult returnedResult = invoker.EndInvokeActionMethod(asyncResult);

            // Assert
            Assert.Equal(expectedResult, returnedResult);
        }

        public void InvokeAction_ThrowsIfControllerContextIsNull()
        {
            // Arrange
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            Assert.ThrowsArgumentNull(
                delegate { invoker.BeginInvokeAction(null, "someAction", null, null); }, "controllerContext");
        }

        public void InvokeAction_ThrowsIfActionNameIsNull()
        {
            // Arrange
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            Assert.ThrowsArgumentNullOrEmpty(
                delegate { invoker.BeginInvokeAction(new ControllerContext(), null, null, null); }, "actionName");
        }

        public void InvokeAction_ResultThrowsException_Handled()
        {
            // Arrange
            ControllerContext controllerContext = GetControllerContext();
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            IAsyncResult asyncResult = invoker.BeginInvokeAction(controllerContext, "ResultThrowsExceptionAndIsHandled", null, null);
            bool retVal = invoker.EndInvokeAction(asyncResult);

            Assert.True(retVal);
            Assert.Equal("From exception filter", ((TestController)controllerContext.Controller).Log);
        }

        public void InvokeAction_RequestValidationFails()
        {
            // Arrange
            ControllerContext controllerContext = GetControllerContext(passesRequestValidation: false);
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            Assert.Throws<HttpRequestValidationException>(
                delegate { invoker.BeginInvokeAction(controllerContext, "NormalAction", null, null); });
        }

        public void InvokeAction_RequestValidationFails() {
            // Arrange
            ControllerContext controllerContext = GetControllerContext(false /* passesRequestValidation */);
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();

            // Act & assert
            ExceptionHelper.ExpectException<HttpRequestValidationException>(
                delegate {
                    invoker.BeginInvokeAction(controllerContext, "NormalAction", null, null);
                });
        }

        private ActionResult BeingInvokeActionMethodWithFiltersTester(Func<IAsyncResult> beginFunction, Func<ActionResult> endFunction, bool checkBegin, bool checkEnd, IActionFilter[] filters)
        {
            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();
            ControllerContext controllerContext = new ControllerContext();
            Dictionary<string, object> parameters = new Dictionary<string, object>();
            Mock<AsyncActionDescriptor> mockActionDescriptor = new Mock<AsyncActionDescriptor>();
            bool endExecuteCalled = false;
            bool beginExecuteCalled = false;
            Func<ActionResult> endExecute = () =>
            {
                endExecuteCalled = true;
                return endFunction();
            };
            Func<IAsyncResult> beingExecute = () =>
            {
                beginExecuteCalled = true;
                return beginFunction();
            };

            mockActionDescriptor.Setup(d => d.BeginExecute(controllerContext, parameters, It.IsAny<AsyncCallback>(), It.IsAny<object>())).Returns(beingExecute);
            mockActionDescriptor.Setup(d => d.EndExecute(It.IsAny<IAsyncResult>())).Returns(endExecute);

            IAsyncResult outerAsyncResult = null;
            try
            {
                outerAsyncResult = invoker.BeginInvokeActionMethodWithFilters(controllerContext, filters, mockActionDescriptor.Object, parameters, null, null);
            }
            catch (Exception ex)
            {
                if (checkEnd)
                {
                    // Testing end, so not expecting exception thrown from begin
                    Assert.NotNull(ex);
                }
                else
                {
                    throw ex;
                }
            }

            Assert.NotNull(outerAsyncResult);
            Assert.Equal(checkBegin, beginExecuteCalled);
            Assert.False(endExecuteCalled);

            ActionExecutedContext postContext = invoker.EndInvokeActionMethodWithFilters(outerAsyncResult);

            Assert.NotNull(postContext);
            if (checkEnd)
            {
                Assert.True(endExecuteCalled);
            }
            return postContext.Result;
        }

        public void InvokeActionMethodWithFilters_ShortCircuited() {
            // Arrange
            List<string> actionLog = new List<string>();
            ControllerContext controllerContext = new ControllerContext();
            Dictionary<string, object> parameters = new Dictionary<string, object>();
            ActionResult actionResult = new ViewResult();

            ActionFilterImpl filter1 = new ActionFilterImpl() {
                OnActionExecutingImpl = delegate(ActionExecutingContext filterContext) {
                    actionLog.Add("OnActionExecuting1");
                },
                OnActionExecutedImpl = delegate(ActionExecutedContext filterContext) {
                    actionLog.Add("OnActionExecuted1");
                }
            };
            ActionFilterImpl filter2 = new ActionFilterImpl() {
                OnActionExecutingImpl = delegate(ActionExecutingContext filterContext) {
                    actionLog.Add("OnActionExecuting2");
                    filterContext.Result = actionResult;
                },
                OnActionExecutedImpl = delegate(ActionExecutedContext filterContext) {
                    actionLog.Add("OnActionExecuted2");
                }
            };

            Mock<AsyncActionDescriptor> mockActionDescriptor = new Mock<AsyncActionDescriptor>();
            mockActionDescriptor.Expect(d => d.BeginExecute(controllerContext, parameters, It.IsAny<AsyncCallback>(), It.IsAny<object>())).Throws(new Exception("I shouldn't have been called."));
            mockActionDescriptor.Expect(d => d.EndExecute(It.IsAny<IAsyncResult>())).Throws(new Exception("I shouldn't have been called."));

            AsyncControllerActionInvoker invoker = new AsyncControllerActionInvoker();
            IActionFilter[] filters = new IActionFilter[] { filter1, filter2 };

            // Act
            IAsyncResult outerAsyncResult = invoker.BeginInvokeActionMethodWithFilters(controllerContext, filters, mockActionDescriptor.Object, parameters, null, null);
            ActionExecutedContext postContext = invoker.EndInvokeActionMethodWithFilters(outerAsyncResult);

            // Assert
            CollectionAssert.AreEqual(
                new string[] { "OnActionExecuting1", "OnActionExecuting2", "OnActionExecuted1" },
                actionLog);
            Assert.AreEqual(actionResult, postContext.Result);
        }