/// <inheritdoc />
public async Task InvokeAsync(ViewComponentContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var methodInfo = context.ViewComponentDescriptor?.MethodInfo;
if (methodInfo == null)
{
throw new InvalidOperationException(Resources.FormatPropertyOfTypeCannotBeNull(
nameof(ViewComponentDescriptor.MethodInfo),
nameof(ViewComponentDescriptor)));
}
var isAsync = typeof(Task).IsAssignableFrom(methodInfo.ReturnType);
IViewComponentResult result;
if (isAsync)
{
result = await InvokeAsyncCore(context);
}
else
{
// We support falling back to synchronous if there is no InvokeAsync method, in this case we'll still
// execute the IViewResult asynchronously.
result = InvokeSyncCore(context);
}
await result.ExecuteAsync(context);
}
private static ViewComponentContext GetViewComponentContext(IView view, Stream stream)
{
var actionContext = new ActionContext(new DefaultHttpContext(), new RouteData(), new ActionDescriptor());
var viewData = new ViewDataDictionary(new EmptyModelMetadataProvider());
var viewContext = new ViewContext(
actionContext,
view,
viewData,
new TempDataDictionary(actionContext.HttpContext, new SessionStateTempDataProvider()),
TextWriter.Null,
new HtmlHelperOptions());
var writer = new StreamWriter(stream) { AutoFlush = true };
var viewComponentDescriptor = new ViewComponentDescriptor()
{
TypeInfo = typeof(object).GetTypeInfo(),
};
var viewComponentContext = new ViewComponentContext(
viewComponentDescriptor,
new Dictionary<string, object>(),
new HtmlTestEncoder(),
viewContext,
writer);
return viewComponentContext;
}
/// <inheritdoc />
public virtual object Create(ViewComponentContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var componentType = context.ViewComponentDescriptor.TypeInfo;
if (componentType.IsValueType ||
componentType.IsInterface ||
componentType.IsAbstract ||
(componentType.IsGenericType && componentType.IsGenericTypeDefinition))
{
var message = Resources.FormatValueInterfaceAbstractOrOpenGenericTypesCannotBeActivated(
componentType.FullName,
GetType().FullName);
throw new InvalidOperationException(message);
}
var viewComponent = _typeActivatorCache.CreateInstance<object>(
context.ViewContext.HttpContext.RequestServices,
context.ViewComponentDescriptor.TypeInfo.AsType());
return viewComponent;
}
/// <summary>
/// Encodes and writes the <see cref="Content"/>.
/// </summary>
/// <param name="context">The <see cref="ViewComponentContext"/>.</param>
public void Execute(ViewComponentContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
context.HtmlEncoder.Encode(context.Writer, Content);
}
private void PrepareViewComponentContext(HttpTestContext testContext, ViewComponentContext viewComponentContext)
{
this.TestContext = testContext;
this.Arguments = viewComponentContext.Arguments;
this.HtmlEncoder = viewComponentContext.HtmlEncoder;
this.ViewComponentDescriptor = viewComponentContext.ViewComponentDescriptor;
this.ViewContext = viewComponentContext.ViewContext;
TestHelper.SetActionContextToAccessor(this.ViewContext);
}
public void Activate(ViewComponentContext viewComponentContext, object viewComponent)
{
var propertiesToActivate = propertyActivatorCache.GetOrAdd(viewComponent.GetType(), getPropertiesToActivate);
for (var i = 0; i < propertiesToActivate.Length; i++)
{
var activateInfo = propertiesToActivate[i];
activateInfo.Activate(viewComponent, viewComponentContext);
}
}
public static ViewComponentContextMock FromViewComponentContext(HttpTestContext testContext, ViewComponentContext viewComponentContext)
{
CommonValidator.CheckForNullReference(testContext, nameof(HttpTestContext));
CommonValidator.CheckForNullReference(viewComponentContext, nameof(ViewComponentContext));
viewComponentContext.ViewComponentDescriptor = viewComponentContext.ViewComponentDescriptor ?? new ViewComponentDescriptor();
viewComponentContext.ViewContext = ViewContextMock.FromViewContext(testContext, viewComponentContext.ViewContext ?? new ViewContext());
viewComponentContext.Arguments = viewComponentContext.Arguments ?? new Dictionary<string, object>();
viewComponentContext.HtmlEncoder = viewComponentContext.HtmlEncoder ?? HtmlEncoder.Default;
return new ViewComponentContextMock(testContext, viewComponentContext);
}
public ObjectMethodExecutor GetViewComponentMethodExecutor(ViewComponentContext viewComponentContext)
{
var cache = CurrentCache;
var viewComponentDescriptor = viewComponentContext.ViewComponentDescriptor;
ObjectMethodExecutor executor;
if (cache.Entries.TryGetValue(viewComponentDescriptor, out executor))
{
return executor;
}
executor = ObjectMethodExecutor.Create(viewComponentDescriptor.MethodInfo, viewComponentDescriptor.TypeInfo);
cache.Entries.TryAdd(viewComponentDescriptor, executor);
return executor;
}
/// <inheritdoc />
public virtual void Release(ViewComponentContext context, object viewComponent)
{
if (context == null)
{
throw new InvalidOperationException(nameof(context));
}
if (viewComponent == null)
{
throw new InvalidOperationException(nameof(viewComponent));
}
var disposable = viewComponent as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
/// <inheritdoc />
public virtual void Release(ViewComponentContext context, object viewComponent)
{
if (context == null)
{
throw new InvalidOperationException(nameof(context));
}
if (viewComponent == null)
{
throw new InvalidOperationException(nameof(viewComponent));
}
var disposable = viewComponent as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
public async Task InvokeAsync(ViewComponentContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var executor = _viewComponentInvokerCache.GetViewComponentMethodExecutor(context);
var returnType = executor.MethodReturnType;
if (returnType == typeof(void) || returnType == typeof(Task))
{
throw new InvalidOperationException(Resources.ViewComponent_MustReturnValue);
}
IViewComponentResult result;
object?component = null;
try
{
component = _viewComponentFactory.CreateViewComponent(context);
if (executor.IsMethodAsync)
{
result = await InvokeAsyncCore(executor, component, context);
}
else
{
// We support falling back to synchronous if there is no InvokeAsync method, in this case we'll still
// execute the IViewResult asynchronously.
result = InvokeSyncCore(executor, component, context);
}
}
finally
{
if (component != null)
{
await _viewComponentFactory.ReleaseViewComponentAsync(context, executor);
}
}
await result.ExecuteAsync(context);
}
public void Constructor_PerformsDefensiveCopies()
{
// Arrange
var httpContext = new DefaultHttpContext();
var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor());
var viewData = new ViewDataDictionary(new EmptyModelMetadataProvider());
var tempData = new TempDataDictionary(httpContext, new SessionStateTempDataProvider());
var viewContext = new ViewContext(
actionContext,
NullView.Instance,
viewData,
tempData,
TextWriter.Null,
new HtmlHelperOptions());
var viewComponentDescriptor = new ViewComponentDescriptor();
// Act
var viewComponentContext = new ViewComponentContext(
viewComponentDescriptor,
new Dictionary <string, object>(),
new HtmlTestEncoder(),
viewContext,
TextWriter.Null);
// Assert
// New ViewContext but initial View and TextWriter copied over.
Assert.NotSame(viewContext, viewComponentContext.ViewContext);
Assert.Same(tempData, viewComponentContext.TempData);
Assert.Same(viewContext.View, viewComponentContext.ViewContext.View);
Assert.Same(viewContext.Writer, viewComponentContext.ViewContext.Writer);
// Double-check the convenience properties.
Assert.Same(viewComponentContext.ViewContext.ViewData, viewComponentContext.ViewData);
Assert.Same(viewComponentContext.ViewContext.TempData, viewComponentContext.TempData);
Assert.Same(viewComponentContext.ViewContext.Writer, viewComponentContext.Writer);
// New VDD instance but initial ModelMetadata copied over.
Assert.NotSame(viewData, viewComponentContext.ViewData);
Assert.Same(viewData.ModelMetadata, viewComponentContext.ViewData.ModelMetadata);
}
public void ReleaseViewComponent_CallsDispose_OnTheInstance()
{
// Arrange
var context = new ViewComponentContext
{
};
var component = new ActivablePropertiesViewComponent();
var viewComponentActivator = new Mock<IViewComponentActivator>();
viewComponentActivator.Setup(vca => vca.Release(context, component))
.Callback<ViewComponentContext, object>((c, o) => (o as IDisposable)?.Dispose());
var factory = new DefaultViewComponentFactory(viewComponentActivator.Object);
// Act
factory.ReleaseViewComponent(context, component);
// Assert
Assert.Equal(true, component.Disposed);
}
private async Task <IHtmlContent> InvokeCoreAsync(ViewComponentDescriptor descriptor, object arguments)
{
var argumentDictionary = GetArgumentDictionary(descriptor, arguments);
var viewBuffer = new ViewBuffer(_viewBufferScope, descriptor.FullName, ViewBuffer.ViewComponentPageSize);
using (var writer = new ViewBufferTextWriter(viewBuffer, _viewContext.Writer.Encoding))
{
var context = new ViewComponentContext(descriptor, argumentDictionary, _htmlEncoder, _viewContext, writer);
var invoker = _invokerFactory.CreateInstance(context);
if (invoker == null)
{
throw new InvalidOperationException(
Resources.FormatViewComponent_IViewComponentFactory_ReturnedNull(descriptor.FullName));
}
await invoker.InvokeAsync(context);
return(viewBuffer);
}
}
public void ReleaseViewComponent_CallsDispose_OnTheInstance()
{
// Arrange
var context = new ViewComponentContext
{
};
var component = new ActivablePropertiesViewComponent();
var viewComponentActivator = new Mock <IViewComponentActivator>();
viewComponentActivator.Setup(vca => vca.Release(context, component))
.Callback <ViewComponentContext, object>((c, o) => (o as IDisposable)?.Dispose());
var factory = new DefaultViewComponentFactory(viewComponentActivator.Object);
// Act
factory.ReleaseViewComponent(context, component);
// Assert
Assert.True(component.Disposed);
}
/// <inheritdoc />
public object Create(ViewComponentContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var componentType = context.ViewComponentDescriptor.TypeInfo;
if (componentType == null)
{
throw new ArgumentException(Resources.FormatPropertyOfTypeCannotBeNull(
nameof(context.ViewComponentDescriptor.TypeInfo),
nameof(context.ViewComponentDescriptor)));
}
var viewComponent = _typeActivatorCache.CreateInstance <object>(
context.ViewContext.HttpContext.RequestServices,
context.ViewComponentDescriptor.TypeInfo.AsType());
return(viewComponent);
}
public void Constructor_PerformsDefensiveCopies()
{
// Arrange
var httpContext = new DefaultHttpContext();
var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor());
var viewData = new ViewDataDictionary(new EmptyModelMetadataProvider());
var viewContext = new ViewContext(
actionContext,
NullView.Instance,
viewData,
new TempDataDictionary(httpContext, new SessionStateTempDataProvider()),
TextWriter.Null,
new HtmlHelperOptions());
var viewComponentDescriptor = new ViewComponentDescriptor();
// Act
var viewComponentContext = new ViewComponentContext(
viewComponentDescriptor,
new Dictionary<string, object>(),
new HtmlTestEncoder(),
viewContext,
TextWriter.Null);
// Assert
// New ViewContext but initial View and TextWriter copied over.
Assert.NotSame(viewContext, viewComponentContext.ViewContext);
Assert.Same(viewContext.View, viewComponentContext.ViewContext.View);
Assert.Same(viewContext.Writer, viewComponentContext.ViewContext.Writer);
// Double-check the convenience properties.
Assert.Same(viewComponentContext.ViewContext.ViewData, viewComponentContext.ViewData);
Assert.Same(viewComponentContext.ViewContext.Writer, viewComponentContext.Writer);
// New VDD instance but initial ModelMetadata copied over.
Assert.NotSame(viewData, viewComponentContext.ViewData);
Assert.Same(viewData.ModelMetadata, viewComponentContext.ViewData.ModelMetadata);
}
public async Task ReleaseViewComponentAsync_CallsDisposeAsync_OnAsyncDisposableComponents()
{
// Arrange
var context = new ViewComponentContext
{
};
var component = new AsyncDisposableViewComponent();
var viewComponentActivator = new Mock <IViewComponentActivator>();
viewComponentActivator.Setup(vca => vca.ReleaseAsync(context, component))
.Callback <ViewComponentContext, object>((c, o) => (o as IAsyncDisposable)?.DisposeAsync())
.Returns(default(ValueTask));
var factory = new DefaultViewComponentFactory(viewComponentActivator.Object);
// Act
await factory.ReleaseViewComponentAsync(context, component);
// Assert
Assert.True(component.Disposed);
}
public void CreateViewComponent_ActivatesProperties_OnTheInstance()
{
// Arrange
var context = new ViewComponentContext
{
};
var component = new ActivablePropertiesViewComponent();
var activator = new Mock<IViewComponentActivator>();
activator.Setup(a => a.Create(context))
.Returns(component);
var factory = new DefaultViewComponentFactory(activator.Object);
// Act
var result = factory.CreateViewComponent(context);
// Assert
var activablePropertiesComponent = Assert.IsType<ActivablePropertiesViewComponent>(result);
Assert.Same(component, activablePropertiesComponent);
Assert.Same(component.Context, activablePropertiesComponent.Context);
}
public void CreateViewComponent_ActivatesProperties_OnTheInstance()
{
// Arrange
var context = new ViewComponentContext
{
};
var component = new ActivablePropertiesViewComponent();
var activator = new Mock <IViewComponentActivator>();
activator.Setup(a => a.Create(context))
.Returns(component);
var factory = new DefaultViewComponentFactory(activator.Object);
// Act
var result = factory.CreateViewComponent(context);
// Assert
var activablePropertiesComponent = Assert.IsType <ActivablePropertiesViewComponent>(result);
Assert.Same(component, activablePropertiesComponent);
Assert.Same(component.Context, activablePropertiesComponent.Context);
}
private static IViewEngine ResolveViewEngine(ViewComponentContext context)
{
return(context.ViewContext.HttpContext.RequestServices.GetRequiredService <ICompositeViewEngine>());
}
/// <summary>Releases the view component.</summary>
/// <param name="context">The <see cref="ViewComponentContext"/> associated with the viewComponent.</param>
/// <param name="viewComponent">The view component to release.</param>
public void Release(ViewComponentContext context, object viewComponent)
{
// No-op.
}
private async Task <IViewComponentResult> InvokeAsyncCore(ObjectMethodExecutor executor, ViewComponentContext context)
{
var component = _viewComponentFactory.CreateViewComponent(context);
using (_logger.ViewComponentScope(context))
{
var arguments = ControllerActionExecutor.PrepareArguments(context.Arguments, executor);
_diagnosticSource.BeforeViewComponent(context, component);
_logger.ViewComponentExecuting(context, arguments);
var startTimestamp = _logger.IsEnabled(LogLevel.Debug) ? Stopwatch.GetTimestamp() : 0;
object resultAsObject = null;
var taskGenericType = executor.TaskGenericType;
if (taskGenericType == typeof(IViewComponentResult))
{
resultAsObject = await(Task <IViewComponentResult>) executor.Execute(component, arguments);
}
else if (taskGenericType == typeof(string))
{
resultAsObject = await(Task <string>) executor.Execute(component, arguments);
}
else if (taskGenericType == typeof(IHtmlContent))
{
resultAsObject = await(Task <IHtmlContent>) executor.Execute(component, arguments);
}
else
{
resultAsObject = await executor.ExecuteAsync(component, arguments);
}
var viewComponentResult = CoerceToViewComponentResult(resultAsObject);
_logger.ViewComponentExecuted(context, startTimestamp, viewComponentResult);
_diagnosticSource.AfterViewComponent(context, viewComponentResult, component);
_viewComponentFactory.ReleaseViewComponent(context, component);
return(viewComponentResult);
}
}
private IViewComponentResult InvokeSyncCore(ObjectMethodExecutor executor, object component, ViewComponentContext context)
{
using (_logger.ViewComponentScope(context))
{
var arguments = PrepareArguments(context.Arguments, executor);
_diagnosticListener.BeforeViewComponent(context, component);
_logger.ViewComponentExecuting(context, arguments);
var stopwatch = ValueStopwatch.StartNew();
object?result;
result = executor.Execute(component, arguments);
var viewComponentResult = CoerceToViewComponentResult(result);
_logger.ViewComponentExecuted(context, stopwatch.GetElapsedTime(), viewComponentResult);
_diagnosticListener.AfterViewComponent(context, viewComponentResult, component);
return(viewComponentResult);
}
}
/// <summary>Creates a view component.</summary>
/// <param name="context"></param>
/// <returns>A view component instance.</returns>
public object Create(ViewComponentContext context) =>
this.container.GetInstance(context.ViewComponentDescriptor.TypeInfo.AsType());
/// <inheritdoc />
public virtual void Release(ViewComponentContext context, object viewComponent)
{
}
private async Task <IViewComponentResult> InvokeAsyncCore(ObjectMethodExecutor executor, object component, ViewComponentContext context)
{
using (_logger.ViewComponentScope(context))
{
var arguments = PrepareArguments(context.Arguments, executor);
_diagnosticListener.BeforeViewComponent(context, component);
_logger.ViewComponentExecuting(context, arguments);
var stopwatch = ValueStopwatch.StartNew();
object resultAsObject;
var returnType = executor.MethodReturnType;
if (returnType == typeof(Task <IViewComponentResult>))
{
var task = executor.Execute(component, arguments);
if (task is null)
{
throw new InvalidOperationException(Resources.ViewComponent_MustReturnValue);
}
resultAsObject = await(Task <IViewComponentResult>) task;
}
else if (returnType == typeof(Task <string>))
{
var task = executor.Execute(component, arguments);
if (task is null)
{
throw new InvalidOperationException(Resources.ViewComponent_MustReturnValue);
}
resultAsObject = await(Task <string>) task;
}
else if (returnType == typeof(Task <IHtmlContent>))
{
var task = executor.Execute(component, arguments);
if (task is null)
{
throw new InvalidOperationException(Resources.ViewComponent_MustReturnValue);
}
resultAsObject = await(Task <IHtmlContent>) task;
}
else
{
resultAsObject = await executor.ExecuteAsync(component, arguments);
}
var viewComponentResult = CoerceToViewComponentResult(resultAsObject);
_logger.ViewComponentExecuted(context, stopwatch.GetElapsedTime(), viewComponentResult);
_diagnosticListener.AfterViewComponent(context, viewComponentResult, component);
return(viewComponentResult);
}
}
/// <summary>
/// Locates and renders a view specified by <see cref="ViewName"/>. If <see cref="ViewName"/> is <c>null</c>,
/// then the view name searched for is<c>"Default"</c>.
/// </summary>
/// <param name="context">The <see cref="ViewComponentContext"/> for the current component execution.</param>
/// <returns>A <see cref="Task"/> which will complete when view rendering is completed.</returns>
public async Task ExecuteAsync(ViewComponentContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var viewEngine = ViewEngine ?? ResolveViewEngine(context);
var viewContext = context.ViewContext;
var isNullOrEmptyViewName = string.IsNullOrEmpty(ViewName);
ViewEngineResult result = null;
IEnumerable <string> originalLocations = null;
if (!isNullOrEmptyViewName)
{
// If view name was passed in is already a path, the view engine will handle this.
result = viewEngine.GetView(viewContext.ExecutingFilePath, ViewName, isMainPage: false);
originalLocations = result.SearchedLocations;
}
if (result == null || !result.Success)
{
// This will produce a string like:
//
// Components/Cart/Default
//
// The view engine will combine this with other path info to search paths like:
//
// Views/Shared/Components/Cart/Default.cshtml
// Views/Home/Components/Cart/Default.cshtml
// Areas/Blog/Views/Shared/Components/Cart/Default.cshtml
//
// This supports a controller or area providing an override for component views.
var viewName = isNullOrEmptyViewName ? DefaultViewName : ViewName;
var qualifiedViewName = string.Format(
CultureInfo.InvariantCulture,
ViewPathFormat,
context.ViewComponentDescriptor.ShortName,
viewName);
result = viewEngine.FindView(viewContext, qualifiedViewName, isMainPage: false);
}
var view = result.EnsureSuccessful(originalLocations).View;
using (view as IDisposable)
{
if (_diagnosticListener == null)
{
_diagnosticListener = viewContext.HttpContext.RequestServices.GetRequiredService <DiagnosticListener>();
}
_diagnosticListener.ViewComponentBeforeViewExecute(context, view);
var childViewContext = new ViewContext(
viewContext,
view,
ViewData ?? context.ViewData,
context.Writer);
await view.RenderAsync(childViewContext);
_diagnosticListener.ViewComponentAfterViewExecute(context, view);
}
}
public void WithCustomViewComponentContextShouldSetItToAccessor()
{
MyApplication
.StartsFrom<DefaultStartup>()
.WithServices(services =>
{
services.AddSingleton<IActionContextAccessor, ActionContextAccessor>();
});
var actionDescriptor = new ActionDescriptor { DisplayName = "Test" };
var context = new ViewComponentContext { ViewContext = new ViewContext { ActionDescriptor = actionDescriptor } };
MyViewComponent<AccessorComponent>
.Instance()
.WithViewComponentContext(context)
.ShouldPassForThe<AccessorComponent>(viewComponent =>
{
Assert.NotNull(viewComponent);
Assert.NotNull(viewComponent.ActionContext);
Assert.Equal("Test", viewComponent.ActionContext.ActionDescriptor.DisplayName);
});
MyApplication.StartsFrom<DefaultStartup>();
}
private async Task <IViewComponentResult> InvokeAsyncCore(ObjectMethodExecutor executor, ViewComponentContext context)
{
var component = _viewComponentFactory.CreateViewComponent(context);
using (_logger.ViewComponentScope(context))
{
var arguments = PrepareArguments(context.Arguments, executor);
_diagnosticSource.BeforeViewComponent(context, component);
_logger.ViewComponentExecuting(context, arguments);
var stopwatch = ValueStopwatch.StartNew();
object resultAsObject;
var returnType = executor.MethodReturnType;
if (returnType == typeof(Task <IViewComponentResult>))
{
resultAsObject = await(Task <IViewComponentResult>) executor.Execute(component, arguments);
}
else if (returnType == typeof(Task <string>))
{
resultAsObject = await(Task <string>) executor.Execute(component, arguments);
}
else if (returnType == typeof(Task <IHtmlContent>))
{
resultAsObject = await(Task <IHtmlContent>) executor.Execute(component, arguments);
}
else
{
resultAsObject = await executor.ExecuteAsync(component, arguments);
}
var viewComponentResult = CoerceToViewComponentResult(resultAsObject);
_logger.ViewComponentExecuted(context, stopwatch.GetElapsedTime(), viewComponentResult);
_diagnosticSource.AfterViewComponent(context, viewComponentResult, component);
_viewComponentFactory.ReleaseViewComponent(context, component);
return(viewComponentResult);
}
}
/// <summary>
/// Encodes and writes the <see cref="Content"/>.
/// </summary>
/// <param name="context">The <see cref="ViewComponentContext"/>.</param>
/// <returns>A completed <see cref="Task"/>.</returns>
public Task ExecuteAsync(ViewComponentContext context)
{
Execute(context);
return TaskCache.CompletedTask;
}
public void Execute(ViewComponentContext context)
{
}
private static ViewComponentContext GetViewComponentContext(
IView view,
ViewDataDictionary viewData,
object diagnosticListener = null)
{
var diagnosticSource = new DiagnosticListener("Microsoft.AspNetCore");
if (diagnosticListener == null)
{
diagnosticListener = new TestDiagnosticListener();
}
diagnosticSource.SubscribeWithAdapter(diagnosticListener);
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(s => s.GetService(typeof(DiagnosticSource))).Returns(diagnosticSource);
var httpContext = new DefaultHttpContext();
httpContext.RequestServices = serviceProvider.Object;
var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor());
var viewContext = new ViewContext(
actionContext,
view,
viewData,
new TempDataDictionary(httpContext, new SessionStateTempDataProvider()),
TextWriter.Null,
new HtmlHelperOptions());
var viewComponentDescriptor = new ViewComponentDescriptor()
{
ShortName = "Invoke",
TypeInfo = typeof(object).GetTypeInfo(),
MethodInfo = typeof(object).GetTypeInfo().DeclaredMethods.First()
};
var viewComponentContext = new ViewComponentContext(
viewComponentDescriptor,
new Dictionary<string, object>(),
new HtmlTestEncoder(),
viewContext,
TextWriter.Null);
return viewComponentContext;
}
public void ViewDataModelSetter_DoesNotThrow_IfValueIncompatibleWithSourceDeclaredType(
object model,
Type expectedType)
{
// Arrange
var httpContext = new DefaultHttpContext();
var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor());
var viewData = new ViewDataDictionary<int>(new EmptyModelMetadataProvider());
var viewContext = new ViewContext(
actionContext,
NullView.Instance,
viewData,
new TempDataDictionary(httpContext, new SessionStateTempDataProvider()),
TextWriter.Null,
new HtmlHelperOptions());
var viewComponentDescriptor = new ViewComponentDescriptor();
var viewComponentContext = new ViewComponentContext(
viewComponentDescriptor,
new Dictionary<string, object>(),
new HtmlTestEncoder(),
viewContext,
TextWriter.Null);
// Act (does not throw)
// Non-ints can be assigned despite type restrictions in the source ViewDataDictionary.
viewComponentContext.ViewData.Model = model;
// Assert
Assert.Equal(expectedType, viewComponentContext.ViewData.ModelMetadata.ModelType);
}
private ViewComponentContextMock(HttpTestContext testContext, ViewComponentContext viewComponentContext)
{
this.PrepareViewComponentContext(testContext, viewComponentContext);
}
private async Task<IViewComponentResult> InvokeAsyncCore(ViewComponentContext context)
{
var component = _viewComponentFactory.CreateViewComponent(context);
using (_logger.ViewComponentScope(context))
{
var method = context.ViewComponentDescriptor.MethodInfo;
var arguments = ControllerActionExecutor.PrepareArguments(context.Arguments, method.GetParameters());
var methodExecutor = _viewComponentInvokerCache.GetViewComponentMethodExecutor(context);
_diagnosticSource.BeforeViewComponent(context, component);
_logger.ViewComponentExecuting(context, arguments);
var startTimestamp = _logger.IsEnabled(LogLevel.Debug) ? Stopwatch.GetTimestamp() : 0;
var result = await ControllerActionExecutor.ExecuteAsync(methodExecutor, component, arguments);
var viewComponentResult = CoerceToViewComponentResult(result);
_logger.ViewComponentExecuted(context, startTimestamp, viewComponentResult);
_diagnosticSource.AfterViewComponent(context, viewComponentResult, component);
_viewComponentFactory.ReleaseViewComponent(context, component);
return viewComponentResult;
}
}
public Task ExecuteAsync(ViewComponentContext context)
{
Execute(context);
return(Task.CompletedTask);
}
public Task ExecuteAsync(ViewComponentContext context)
{
return Task.FromResult(0);
}