/// <summary>
/// Determines whether the command is valid and adds any validation errors to the command's ValidationResults.
/// </summary>
/// <param name="request">The <see cref="HandlerRequest"/> to be validated.</param>
/// <returns>true if command is valid, false otherwise.</returns>
public bool Validate(CommandHandlerRequest request)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
ModelValidatorProvider[] validatorProviders = request.Configuration.Services.GetModelValidatorProviders();
// Optimization : avoid validating the object graph if there are no validator providers
if (validatorProviders.Length == 0)
{
return true;
}
ModelMetadataProvider metadataProvider = request.Configuration.Services.GetModelMetadataProvider();
ModelMetadata metadata = metadataProvider.GetMetadataForType(() => request.Command, request.MessageType);
ValidationContext validationContext = new ValidationContext
{
MetadataProvider = metadataProvider,
ValidatorProviders = validatorProviders,
ValidatorCache = request.Configuration.Services.GetModelValidatorCache(),
ModelState = request.ModelState,
Visited = new HashSet<object>(ReferenceEqualityComparer.Instance),
KeyBuilders = new Stack<IKeyBuilder>(),
RootPrefix = string.Empty
};
return this.ValidateNodeAndChildren(metadata, validationContext, container: null);
}
public void WhenGettingDependencyScopeFromDeepestRequestThenDelegatesToDeepestDependencyResolver()
{
// Arrange
Mock<ICommand> command = new Mock<ICommand>();
HandlerRequest request = new CommandHandlerRequest(this.defaultConfig, command.Object);
HandlerRequest innerRequest = new CommandHandlerRequest(this.defaultConfig, command.Object, request);
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>(MockBehavior.Strict);
resolver
.Setup(r => r.BeginScope())
.Returns(CreateScopeMock);
resolver
.Setup(r => r.Dispose());
this.defaultConfig.DependencyResolver = resolver.Object;
// Act
var scope1 = request.GetDependencyScope();
var scope2 = request.GetDependencyScope(false);
var scope3 = innerRequest.GetDependencyScope();
var scope4 = innerRequest.GetDependencyScope(false);
// Assert
Assert.NotNull(scope1);
Assert.NotNull(scope2);
Assert.NotNull(scope3);
Assert.NotNull(scope4);
Assert.Same(scope1, scope2);
Assert.Same(scope1, scope3);
Assert.NotSame(scope1, scope4);
resolver.Verify(r => r.BeginScope(), Times.Exactly(2));
}
public void WhenGettingDependencyScopeThenDelegatesToDependencyResolver()
{
// Arrange
Mock<ICommand> command = new Mock<ICommand>();
HandlerRequest request = new CommandHandlerRequest(this.defaultConfig, command.Object);
Mock<IDependencyScope> scope = new Mock<IDependencyScope>(MockBehavior.Strict);
scope.Setup(s => s.Dispose());
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>(MockBehavior.Strict);
resolver
.Setup(r => r.BeginScope())
.Returns(scope.Object);
resolver
.Setup(r => r.Dispose());
this.defaultConfig.DependencyResolver = resolver.Object;
// Act
var scope1 = request.GetDependencyScope();
var scope2 = request.GetDependencyScope();
// Assert
Assert.NotNull(scope1);
Assert.Same(scope1, scope2);
resolver.Verify(r => r.BeginScope(), Times.Once());
}
/// <inheritsdoc />
public async Task<HandlerResponse> ExecuteAsync(CommandHandlerRequest request, CancellationToken cancellationToken)
{
QueuePolicy policy = GetQueuePolicy(request);
if (policy == QueuePolicy.NoQueue)
{
return await this.inner.ExecuteAsync(request, cancellationToken);
}
return await policy.ExecuteAsync(request, cancellationToken);
}
/// <summary>Initializes a new instance of the <see cref="ExceptionResult"/> class.</summary>
/// <param name="exception">The exception to include in the error.</param>
/// <param name="request">The request message which led to this result.</param>
public ExceptionResult(Exception exception, CommandHandlerRequest request)
{
if (exception == null)
{
throw new ArgumentNullException("exception");
}
this.Exception = exception;
this.Request = request;
}
private static QueuePolicy GetQueuePolicy(CommandHandlerRequest request)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
ServicesContainer servicesContainer = request.Configuration.Services;
ICommandHandlerSelector handlerSelector = servicesContainer.GetHandlerSelector();
CommandHandlerDescriptor descriptor = handlerSelector.SelectHandler(request);
return descriptor.QueuePolicy;
}
public void WhenCreatingHandlerWithoutParametersThenThrowsArgumentNullException()
{
// Assign
ICommandHandlerActivator activator = new DefaultCommandHandlerActivator();
CommandHandlerRequest request = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
// Act
// Assert
ExceptionAssert.ThrowsArgumentNull(() => activator.Create(null, null), "request");
ExceptionAssert.ThrowsArgumentNull(() => activator.Create(null, descriptor), "request");
ExceptionAssert.ThrowsArgumentNull(() => activator.Create(request, null), "descriptor");
}
public void WhenValidatingInvalidDataAnnotationsValidatableCommandThenReturnsFalse()
{
// Assign
ICommandValidator validator = new DefaultCommandValidator();
ICommand command = new DataAnnotationsValidatableCommand { Property1 = "01234567890123456789" };
CommandHandlerRequest request = new CommandHandlerRequest(this.configuration, command);
// Act
bool result = validator.Validate(request);
// Assert
Assert.False(result);
Assert.Equal(1, request.ModelState.Count);
}
public void WhenValidatingInvalidValidatableObjectCommandThenReturnsFalse()
{
// Assign
ICommandValidator validator = new DefaultCommandValidator();
ICommand command = new ValidatableObjectCommand(false);
CommandHandlerRequest request = new CommandHandlerRequest(this.configuration, command);
// Act
bool result = validator.Validate(request);
// Assert
Assert.False(result);
Assert.Equal(2, request.ModelState.Sum(kvp => kvp.Value.Errors.Count));
}
public void WhenValidatingValidValidatableObjectCommandThenReturnsTrue()
{
// Assign
ICommandValidator validator = new DefaultCommandValidator();
ICommand command = new ValidatableObjectCommand(true);
CommandHandlerRequest request = new CommandHandlerRequest(this.configuration, command);
// Act
bool result = validator.Validate(request);
// Assert
Assert.True(result);
Assert.Equal(0, request.ModelState.Count);
}
public void WhenCreatingInstanceThenPropertiesAreDefined()
{
// Arrange
Mock<ICommand> command = new Mock<ICommand>();
// Act
CommandHandlerRequest request = new CommandHandlerRequest(this.defaultConfig, command.Object);
// Assert
Assert.Null(request.ParentRequest);
Assert.Same(this.defaultConfig, request.Configuration);
Assert.Same(command.Object, request.Command);
Assert.Equal(command.Object.GetType(), request.MessageType);
Assert.NotEqual(Guid.Empty, request.Id);
}
public void WhenExecutingFilterThenCacheIsChecked()
{
// Arrange
CacheAttribute filter = this.CreateAttribute();
SimpleCommand command = new SimpleCommand { Property1 = 12, Property2 = "test" };
CommandHandlerRequest request = new CommandHandlerRequest(this.config, command);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
CommandHandlerContext context = new CommandHandlerContext(request, descriptor);
// Act
filter.OnCommandExecuting(context);
// Assert
this.cache.Verify(c => c.Get(It.IsAny<string>(), It.IsAny<string>()), Times.Once());
Assert.Null(context.Response);
}
public void WhenCreatingHandlerFromActivatorThenReturnsHandler()
{
// Assign
ICommandHandlerActivator activator = new DefaultCommandHandlerActivator();
CommandHandlerRequest request = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
this.dependencyResolver.Setup(resolver => resolver.GetService(typeof(SimpleCommandHandler))).Returns(null);
// Act
ICommandHandler commandHandler = activator.Create(request, descriptor);
// Assert
Assert.NotNull(commandHandler);
Assert.IsType(typeof(SimpleCommandHandler), commandHandler);
Assert.Equal(0, descriptor.Properties.Count);
this.dependencyResolver.Verify(resolver => resolver.GetService(typeof(SimpleCommandHandler)), Times.Once());
}
public void WhenCreatingInstanceWithParameterCtorThenPropertiesAreDefined()
{
// Arrange
CommandHandlerRequest request = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
// Act
CommandHandlerContext context = new CommandHandlerContext(request, descriptor);
// Assert
Assert.Same(this.config, context.Configuration);
Assert.Same(request, context.Request);
Assert.Same(request.Command, context.Command);
Assert.Same(descriptor, context.Descriptor);
Assert.NotNull(context.Request);
Assert.NotNull(context.Items);
Assert.Equal(0, context.Items.Count);
}
public void WhenExecutingFilterToIgnoreThenCacheIsIgnored()
{
// Arrange
CacheAttribute filter = this.CreateAttribute();
SimpleCommand command = new SimpleCommand { Property1 = 12, Property2 = "test" };
SimpleCommand cachedCommand = new SimpleCommand { Property1 = 12, Property2 = "test in cache" };
CommandHandlerRequest request = new CommandHandlerRequest(this.config, command);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(NotCachedCommand), typeof(NotCachedCommandHandler));
CommandHandlerContext context = new CommandHandlerContext(request, descriptor);
this.cache.Setup(c => c.Get(It.IsAny<string>(), It.IsAny<string>())).Returns(new CacheAttribute.CacheEntry(cachedCommand));
// Act
filter.OnCommandExecuting(context);
// Assert
this.cache.Verify(c => c.Get(It.IsAny<string>(), It.IsAny<string>()), Times.Never());
Assert.Null(context.Response);
}
/// <summary>
/// Initializes a new instance of the <see cref="CommandHandlerContext"/> class.
/// </summary>
/// <param name="request">The handler request.</param>
/// <param name="descriptor">The handler descriptor.</param>
public CommandHandlerContext(CommandHandlerRequest request, CommandHandlerDescriptor descriptor)
: this()
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
if (request.Configuration == null)
{
throw Error.Argument("request");
}
this.Configuration = request.Configuration;
this.Request = request;
this.Command = request.Command;
this.Descriptor = descriptor;
this.User = this.Configuration.Services.GetPrincipalProvider().Principal;
}
/// <summary>
/// Execute the request via the worker.
/// </summary>
/// <param name="request">The <see cref="HandlerRequest"/> to execute.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> to cancel the execution.</param>
/// <returns>The result of the command, if any.</returns>
public Task <HandlerResponse> ExecuteAsync(CommandHandlerRequest request, CancellationToken cancellationToken)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
cancellationToken.ThrowIfCancellationRequested();
ServicesContainer servicesContainer = request.Configuration.Services;
ICommandHandlerSelector handlerSelector = servicesContainer.GetHandlerSelector();
CommandHandlerDescriptor descriptor = handlerSelector.SelectHandler(request);
ICommandHandler commandHandler = descriptor.CreateHandler(request);
if (commandHandler == null)
{
throw CreateHandlerNotFoundException(descriptor);
}
request.RegisterForDispose(commandHandler, true);
CommandHandlerContext context = new CommandHandlerContext(request, descriptor);
context.Handler = commandHandler;
commandHandler.CommandContext = context;
CommandFilterGrouping commandFilterGrouping = descriptor.GetFilterGrouping();
ICommandHandlerResult result = new CommandHandlerFilterResult(context, servicesContainer, commandFilterGrouping.CommandHandlerFilters);
if (descriptor.RetryPolicy != RetryPolicy.NoRetry)
{
result = new RetryHandlerResult(descriptor.RetryPolicy, result);
}
if (commandFilterGrouping.ExceptionFilters.Length > 0)
{
IExceptionLogger exceptionLogger = ExceptionServices.GetLogger(servicesContainer);
IExceptionHandler exceptionHandler = ExceptionServices.GetHandler(servicesContainer);
result = new ExceptionFilterResult(context, commandFilterGrouping.ExceptionFilters, exceptionLogger, exceptionHandler, result);
}
return(result.ExecuteAsync(cancellationToken));
}
/// <summary>
/// Execute the request via the worker.
/// </summary>
/// <param name="request">The <see cref="HandlerRequest"/> to execute.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> to cancel the execution.</param>
/// <returns>The result of the command, if any.</returns>
public Task<HandlerResponse> ExecuteAsync(CommandHandlerRequest request, CancellationToken cancellationToken)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
cancellationToken.ThrowIfCancellationRequested();
ServicesContainer servicesContainer = request.Configuration.Services;
ICommandHandlerSelector handlerSelector = servicesContainer.GetHandlerSelector();
CommandHandlerDescriptor descriptor = handlerSelector.SelectHandler(request);
ICommandHandler commandHandler = descriptor.CreateHandler(request);
if (commandHandler == null)
{
throw CreateHandlerNotFoundException(descriptor);
}
request.RegisterForDispose(commandHandler, true);
CommandHandlerContext context = new CommandHandlerContext(request, descriptor);
context.Handler = commandHandler;
commandHandler.CommandContext = context;
CommandFilterGrouping commandFilterGrouping = descriptor.GetFilterGrouping();
ICommandHandlerResult result = new CommandHandlerFilterResult(context, servicesContainer, commandFilterGrouping.CommandHandlerFilters);
if (descriptor.RetryPolicy != RetryPolicy.NoRetry)
{
result = new RetryHandlerResult(descriptor.RetryPolicy, result);
}
if (commandFilterGrouping.ExceptionFilters.Length > 0)
{
IExceptionLogger exceptionLogger = ExceptionServices.GetLogger(servicesContainer);
IExceptionHandler exceptionHandler = ExceptionServices.GetHandler(servicesContainer);
result = new ExceptionFilterResult(context, commandFilterGrouping.ExceptionFilters, exceptionLogger, exceptionHandler, result);
}
return result.ExecuteAsync(cancellationToken);
}
/// <summary>
/// Selects a <see cref="CommandHandlerDescriptor"/> for the given <see cref="HandlerRequest"/>.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>An <see cref="CommandHandlerDescriptor"/> instance.</returns>
public CommandHandlerDescriptor SelectHandler(CommandHandlerRequest request)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
CommandHandlerDescriptor result;
if (this.handlerInfoCache.Value.TryGetValue(request.MessageType, out result))
{
return result;
}
ICollection<Type> handlerTypes = this.commandHandlerTypeCache.GetHandlerTypes(request.MessageType);
if (handlerTypes.Count == 0)
{
throw Error.InvalidOperation(Resources.DefaultHandlerSelector_HandlerNotFound, request.MessageType.Name);
}
throw CreateAmbiguousHandlerException(request.MessageType.Name, handlerTypes);
}
/// <summary>
/// Initializes a new instance of the <see cref="ExceptionContext"/> class using the values provided.
/// </summary>
/// <param name="exceptionInfo">The exception caught.</param>
/// <param name="catchBlock">The catch block where the exception was caught.</param>
/// <param name="request">The request being processed when the exception was caught.</param>
public ExceptionContext(ExceptionDispatchInfo exceptionInfo, ExceptionContextCatchBlock catchBlock, CommandHandlerRequest request)
{
if (exceptionInfo == null)
{
throw new ArgumentNullException("exceptionInfo");
}
this.ExceptionInfo = exceptionInfo;
if (catchBlock == null)
{
throw new ArgumentNullException("catchBlock");
}
this.CatchBlock = catchBlock;
if (request == null)
{
throw new ArgumentNullException("request");
}
this.Request = request;
}
/// <summary>
/// Selects a <see cref="CommandHandlerDescriptor"/> for the given <see cref="HandlerRequest"/>.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>An <see cref="CommandHandlerDescriptor"/> instance.</returns>
public CommandHandlerDescriptor SelectHandler(CommandHandlerRequest request)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
CommandHandlerDescriptor result;
if (this.handlerInfoCache.Value.TryGetValue(request.MessageType, out result))
{
return(result);
}
ICollection <Type> handlerTypes = this.commandHandlerTypeCache.GetHandlerTypes(request.MessageType);
if (handlerTypes.Count == 0)
{
throw Error.InvalidOperation(Resources.DefaultHandlerSelector_HandlerNotFound, request.MessageType.Name);
}
throw CreateAmbiguousHandlerException(request.MessageType.Name, handlerTypes);
}
public void WhenDisposingScopeFromDeepestRequestThenScopesAreDisposed()
{
// Arrange
Mock<ICommand> command = new Mock<ICommand>();
HandlerRequest request = new CommandHandlerRequest(this.defaultConfig, command.Object);
HandlerRequest innerRequest = new CommandHandlerRequest(this.defaultConfig, command.Object, request);
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>(MockBehavior.Strict);
int disposedCount = 0;
resolver
.Setup(r => r.BeginScope())
.Returns(() => CreateVerifiableScopeMock(() => disposedCount++));
resolver
.Setup(r => r.Dispose());
this.defaultConfig.DependencyResolver = resolver.Object;
request.GetDependencyScope();
innerRequest.GetDependencyScope(false);
// Act & Assert
Assert.Equal(0, disposedCount);
innerRequest.Dispose();
Assert.Equal(1, disposedCount);
request.Dispose();
Assert.Equal(2, disposedCount);
}
public void WhenValidatingCommandWithUriThenReturnsTrue()
{
// Assign
ICommandValidator validator = new DefaultCommandValidator();
CommandWithUriProperty command = new CommandWithUriProperty();
command.Property1 = new Uri("/test/values", UriKind.Relative);
CommandHandlerRequest request = new CommandHandlerRequest(this.configuration, command);
// Act
bool result = validator.Validate(request);
// Assert
// A lots of properties of Uri throw exceptions but its still valid
Assert.True(result);
Assert.Equal(0, request.ModelState.Count);
}
public void WhenExecutedFilterVaryByParamsSetIncorrectlyThenCacheIsAlwaysUsed()
{
// Arrange
CacheAttribute filter = this.CreateAttribute(new MemoryCache("test"));
filter.Duration = 10;
filter.VaryByParams = "XXXX";
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
SimpleCommand command1 = new SimpleCommand { Property1 = 1, Property2 = "test1" };
CommandHandlerRequest request1 = new CommandHandlerRequest(this.config, command1);
CommandHandlerContext context1 = new CommandHandlerContext(request1, descriptor);
CommandHandlerExecutedContext executedContext1 = new CommandHandlerExecutedContext(context1, null);
executedContext1.SetResponse("result1");
SimpleCommand command2 = new SimpleCommand { Property1 = 2, Property2 = "test2" };
CommandHandlerRequest request2 = new CommandHandlerRequest(this.config, command2);
CommandHandlerContext context2 = new CommandHandlerContext(request2, descriptor);
CommandHandlerExecutedContext executedContext2 = new CommandHandlerExecutedContext(context2, null);
executedContext2.SetResponse( "result2");
SimpleCommand command3 = new SimpleCommand { Property1 = 2, Property2 = "test3" };
CommandHandlerRequest request3 = new CommandHandlerRequest(this.config, command3);
CommandHandlerContext context3 = new CommandHandlerContext(request3, descriptor);
CommandHandlerExecutedContext executedContext3 = new CommandHandlerExecutedContext(context3, null);
executedContext3.SetResponse("result3");
// Act
filter.OnCommandExecuting(context1);
filter.OnCommandExecuted(executedContext1);
filter.OnCommandExecuting(context2);
filter.OnCommandExecuted(executedContext2);
filter.OnCommandExecuting(context3);
filter.OnCommandExecuted(executedContext3);
// Assert
Assert.Equal("result1", executedContext1.Response.Value);
Assert.Equal("result1", executedContext2.Response.Value);
Assert.Equal("result1", executedContext3.Response.Value);
}
public void WhenExecutedFilterVaryByUserThenCacheIsUpdated()
{
// Arrange
CacheAttribute filter = this.CreateAttribute(new MemoryCache("test"));
filter.Duration = 10;
filter.VaryByUser = true;
filter.VaryByParams = CacheAttribute.VaryByParamsNone;
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
SimpleCommand command1 = new SimpleCommand { Property1 = 1, Property2 = "test1" };
CommandHandlerRequest request1 = new CommandHandlerRequest(this.config, command1);
CommandHandlerContext context1 = new CommandHandlerContext(request1, descriptor);
context1.User = new GenericPrincipal(new GenericIdentity("user1"), null);
CommandHandlerExecutedContext executedContext1 = new CommandHandlerExecutedContext(context1, null);
executedContext1.Response = new HandlerResponse(request1, "result1");
SimpleCommand command2 = new SimpleCommand { Property1 = 1, Property2 = "test1" };
CommandHandlerRequest request2 = new CommandHandlerRequest(this.config, command2);
CommandHandlerContext context2 = new CommandHandlerContext(request2, descriptor);
context2.User = new GenericPrincipal(new GenericIdentity("user2"), null);
CommandHandlerExecutedContext executedContext2 = new CommandHandlerExecutedContext(context2, null);
executedContext2.Response = new HandlerResponse(request2, "result2");
SimpleCommand command3 = new SimpleCommand { Property1 = 1, Property2 = "test1" };
CommandHandlerRequest request3 = new CommandHandlerRequest(this.config, command3);
CommandHandlerContext context3 = new CommandHandlerContext(request3, descriptor);
context3.User = new GenericPrincipal(new GenericIdentity("user1"), null);
CommandHandlerExecutedContext executedContext3 = new CommandHandlerExecutedContext(context3, null);
executedContext3.Response = new HandlerResponse(request3, "result3");
// Act
filter.OnCommandExecuting(context1);
filter.OnCommandExecuted(executedContext1);
filter.OnCommandExecuting(context2);
filter.OnCommandExecuted(executedContext2);
filter.OnCommandExecuting(context3);
filter.OnCommandExecuted(executedContext3);
// Assert
Assert.Equal("result1", executedContext1.Response.Value);
Assert.Equal("result2", executedContext2.Response.Value);
Assert.Equal("result1", executedContext3.Response.Value);
}
public void WhenValidatingInvalidMixedValidatableCommandThenReturnsFalse()
{
// Assign
ICommandValidator validator = new DefaultCommandValidator();
MixedValidatableCommand command = new MixedValidatableCommand(false);
command.Property1 = "123456789456132456";
CommandHandlerRequest request = new CommandHandlerRequest(this.configuration, command);
// Act
bool result = validator.Validate(request);
// Assert
Assert.False(result);
// Validator ignore IValidatableObject validation until DataAnnotations succeed.
Assert.Equal(1, request.ModelState.Count);
}
public void CreateTranscientHandler_InstancianteEachTime()
{
// Arrange
var config = new ProcessorConfiguration();
config.DefaultHandlerLifetime = HandlerLifetime.Transient;
ICommandHandlerActivator activator = new DefaultCommandHandlerActivator();
CommandHandlerRequest request1 = new CommandHandlerRequest(config, this.command.Object);
CommandHandlerRequest request2 = new CommandHandlerRequest(config, this.command.Object);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
CommandHandlerDescriptor descriptor2 = new CommandHandlerDescriptor(config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
// Act
var handler1 = activator.Create(request1, descriptor);
var handler2 = activator.Create(request1, descriptor);
var handler3 = activator.Create(request2, descriptor);
var handler4 = activator.Create(request1, descriptor2);
// Assert
Assert.NotNull(handler1);
Assert.NotNull(handler2);
Assert.NotNull(handler3);
Assert.NotNull(handler4);
Assert.NotSame(handler1, handler2);
Assert.NotSame(handler1, handler3);
Assert.NotSame(handler1, handler4);
Assert.NotSame(handler2, handler3);
Assert.NotSame(handler2, handler4);
Assert.NotSame(handler3, handler4);
}
public void WhenExecutedFilterWithExceptionThenCacheIsNotUpdated()
{
// Arrange
CacheAttribute filter = this.CreateAttribute();
SimpleCommand command = new SimpleCommand { Property1 = 12, Property2 = "test" };
CommandHandlerRequest request = new CommandHandlerRequest(this.config, command);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
CommandHandlerContext context = new CommandHandlerContext(request, descriptor);
Exception exception = new Exception();
ExceptionDispatchInfo exceptionInfo = ExceptionDispatchInfo.Capture(exception);
CommandHandlerExecutedContext executedContext = new CommandHandlerExecutedContext(context, exceptionInfo);
// Act
filter.OnCommandExecuted(executedContext);
// Assert
this.cache.Verify(c => c.Add(It.IsAny<string>(), It.IsAny<object>(), It.IsAny<DateTimeOffset>(), It.IsAny<string>()), Times.Never());
Assert.Null(context.Response);
}
public void WhenCreatingHandlerThrowExceptionThenRethowsInvalidOperationException()
{
// Arrange
ICommandHandlerActivator activator = new DefaultCommandHandlerActivator();
CommandHandlerRequest request = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerDescriptor descriptor = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
this.dependencyResolver
.Setup(resolver => resolver.GetService(typeof(SimpleCommandHandler)))
.Throws<CommandHandlerNotFoundException>();
bool exceptionRaised = false;
// Act
try
{
activator.Create(request, descriptor);
}
catch (InvalidOperationException)
{
exceptionRaised = true;
}
// Assert
Assert.True(exceptionRaised);
}
public void WhenCreatingHandlerFromTwoDescriptorsAndDependencyResolverThenGetActivatorDepencyResolver()
{
// Assign
ICommandHandlerActivator activator = new DefaultCommandHandlerActivator();
CommandHandlerRequest request = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerDescriptor descriptor1 = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
CommandHandlerDescriptor descriptor2 = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
int[] i = { 0 };
this.dependencyResolver
.When(() => i[0] < 1)
.Setup(resolver => resolver.GetService(typeof(SimpleCommandHandler)))
.Returns(null)
.Callback(() => i[0]++);
this.dependencyResolver
.When(() => i[0] >= 1)
.Setup(resolver => resolver.GetService(typeof(SimpleCommandHandler)))
.Returns(new SimpleCommandHandler());
// Act
activator.Create(request, descriptor1);
ICommandHandler commandHandler = activator.Create(request, descriptor2);
// Assert
Assert.NotNull(commandHandler);
Assert.IsType(typeof(SimpleCommandHandler), commandHandler);
Assert.Equal(0, descriptor2.Properties.Count);
this.dependencyResolver.Verify(resolver => resolver.GetService(typeof(SimpleCommandHandler)), Times.Exactly(2));
}
public void WhenCreatingHandlerFromTwoDescriptorsThenGetActivatorFromProperties()
{
// Assign
ICommandHandlerActivator activator = new DefaultCommandHandlerActivator();
CommandHandlerRequest request1 = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerRequest request2 = new CommandHandlerRequest(this.config, this.command.Object);
CommandHandlerDescriptor descriptor1 = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
CommandHandlerDescriptor descriptor2 = new CommandHandlerDescriptor(this.config, typeof(SimpleCommand), typeof(SimpleCommandHandler));
this.dependencyResolver.Setup(resolver => resolver.GetService(typeof(SimpleCommandHandler))).Returns(null);
// Act
activator.Create(request1, descriptor1);
activator.Create(request2, descriptor2);
ICommandHandler commandHandler = activator.Create(request2, descriptor2);
// Assert
Assert.NotNull(commandHandler);
Assert.IsType(typeof(SimpleCommandHandler), commandHandler);
Assert.Equal(1, descriptor2.Properties.Count);
this.dependencyResolver.Verify(resolver => resolver.GetService(typeof(SimpleCommandHandler)), Times.Exactly(2));
}
public void WhenDisposingThenScopeIsDisposed()
{
// Arrange
Mock<ICommand> command = new Mock<ICommand>();
HandlerRequest request = new CommandHandlerRequest(this.defaultConfig, command.Object);
Mock<IDependencyScope> scope = new Mock<IDependencyScope>(MockBehavior.Strict);
scope.Setup(s => s.Dispose());
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>(MockBehavior.Strict);
resolver
.Setup(r => r.BeginScope())
.Returns(scope.Object);
resolver
.Setup(r => r.Dispose());
this.defaultConfig.DependencyResolver = resolver.Object;
request.GetDependencyScope();
// Act
request.Dispose();
// Assert
scope.Verify(s => s.Dispose(), Times.Once());
}
/// <summary>
/// Creates a handler instance for the given <see cref="HandlerRequest"/>.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>The created handler instance.</returns>
public virtual ICommandHandler CreateHandler(CommandHandlerRequest request)
{
return(this.handlerActivator.Create(request, this));
}
