public static void CustomChannel_Async_Request_Exception_Propagates()
{
MockChannelFactory <IRequestChannel> mockChannelFactory = null;
MockRequestChannel mockRequestChannel = null;
string testMessageBody = "CustomChannelTest_Async";
Message inputMessage = Message.CreateMessage(MessageVersion.Default, action: "Test", body: testMessageBody);
string expectedExceptionMessage = "Async exception message";
// *** SETUP *** \\
// Intercept the creation of the factory so we can intercept creation of the channel
Func <Type, BindingContext, IChannelFactory> buildFactoryAction = (Type type, BindingContext context) =>
{
// Create the channel factory so we can intercept channel creation
mockChannelFactory = new MockChannelFactory <IRequestChannel>(context, new TextMessageEncodingBindingElement().CreateMessageEncoderFactory());
// Override the OnCreateChannel call so we can fault inject an exception
mockChannelFactory.OnCreateChannelOverride = (EndpointAddress endpoint, Uri via) =>
{
// Create the mock channel and fault inject an exception in the EndRequest
mockRequestChannel = (MockRequestChannel)mockChannelFactory.DefaultOnCreateChannel(endpoint, via);
mockRequestChannel.EndRequestOverride = (IAsyncResult ar) =>
{
throw new InvalidOperationException(expectedExceptionMessage);
};
return(mockRequestChannel);
};
return(mockChannelFactory);
};
MockTransportBindingElement mockBindingElement = new MockTransportBindingElement();
mockBindingElement.BuildChannelFactoryOverride = buildFactoryAction;
CustomBinding binding = new CustomBinding(mockBindingElement);
EndpointAddress address = new EndpointAddress("myprotocol://localhost:5000");
var factory = new ChannelFactory <ICustomChannelServiceInterface>(binding, address);
ICustomChannelServiceInterface channel = factory.CreateChannel();
// *** EXECUTE *** \\
// The ProcessAsync should not throw -- the fault comes in the EndRequest
Task <Message> processTask = channel.ProcessAsync(inputMessage);
InvalidOperationException actualException = Assert.Throws <InvalidOperationException>(() =>
{
// awaiting the task will invoke the EndRequest
processTask.GetAwaiter().GetResult();
});
// *** VALIDATE *** \\
Assert.True(String.Equals(expectedExceptionMessage, actualException.Message),
String.Format("Expected exception message to be '{0}' but actual was '{1}'",
expectedExceptionMessage, actualException.Message));
}
public static void CustomChannel_Async_Open_Close_Methods_Called()
{
MockChannelFactory <IRequestChannel> mockChannelFactory = null;
MockRequestChannel mockRequestChannel = null;
List <string> channelOpenMethodsCalled = new List <string>();
List <string> channelCloseMethodsCalled = new List <string>();
List <string> factoryOpenMethodsCalled = new List <string>();
List <string> factoryCloseMethodsCalled = new List <string>();
string testMessageBody = "CustomChannelTest_Async";
Message inputMessage = Message.CreateMessage(MessageVersion.Default, action: "Test", body: testMessageBody);
// *** SETUP *** \\
// Intercept the creation of the factory so we can intercept creation of the channel
Func <Type, BindingContext, IChannelFactory> buildFactoryAction = (Type type, BindingContext context) =>
{
// Create the channel factory and intercept all open and close method calls
mockChannelFactory = new MockChannelFactory <IRequestChannel>(context, new TextMessageEncodingBindingElement().CreateMessageEncoderFactory());
MockCommunicationObject.InterceptAllOpenMethods(mockChannelFactory, factoryOpenMethodsCalled);
MockCommunicationObject.InterceptAllCloseMethods(mockChannelFactory, factoryCloseMethodsCalled);
// Override the OnCreateChannel call so we get the mock channel created by the factory
mockChannelFactory.OnCreateChannelOverride = (EndpointAddress endpoint, Uri via) =>
{
// Create the default mock channel and intercept all its open and close method calls
mockRequestChannel = (MockRequestChannel)mockChannelFactory.DefaultOnCreateChannel(endpoint, via);
MockCommunicationObject.InterceptAllOpenMethods(mockRequestChannel, channelOpenMethodsCalled);
MockCommunicationObject.InterceptAllCloseMethods(mockRequestChannel, channelCloseMethodsCalled);
return(mockRequestChannel);
};
return(mockChannelFactory);
};
MockTransportBindingElement mockBindingElement = new MockTransportBindingElement();
mockBindingElement.BuildChannelFactoryOverride = buildFactoryAction;
CustomBinding binding = new CustomBinding(mockBindingElement);
EndpointAddress address = new EndpointAddress("myprotocol://localhost:5000");
var factory = new ChannelFactory <ICustomChannelServiceInterface>(binding, address);
// Explicitly open factory asynchronously because the implicit open is synchronous
IAsyncResult openResult = factory.BeginOpen(null, null);
Task openTask = Task.Factory.FromAsync(openResult, factory.EndOpen);
openTask.GetAwaiter().GetResult();
ICustomChannelServiceInterface channel = factory.CreateChannel();
// *** EXECUTE *** \\
Task <Message> processTask = channel.ProcessAsync(inputMessage);
// The mock's default behavior is just to loopback what we sent.
Message outputMessage = processTask.GetAwaiter().GetResult();
var result = outputMessage.GetBody <string>();
// Explicitly close the channel factory asynchronously.
// One of the important aspects of this test is that an asynchronous
// close of the factory also asynchronously closes the channel.
IAsyncResult asyncResult = factory.BeginClose(null, null);
Task task = Task.Factory.FromAsync(asyncResult, factory.EndClose);
task.GetAwaiter().GetResult();
// *** VALIDATE *** \\
Assert.True(String.Equals(testMessageBody, result),
String.Format("Expected body to be '{0}' but actual was '{1}'", testMessageBody, result));
string expectedOpens = "OnOpening,OnBeginOpen,OnOpened";
string expectedCloses = "OnClosing,OnBeginClose,OnClosed";
string actualOpens = String.Join(",", channelOpenMethodsCalled);
Assert.True(String.Equals(expectedOpens, actualOpens, StringComparison.Ordinal),
String.Format("Expected channel open methods to be '{0}' but actual was '{1}'.",
expectedOpens, actualOpens));
string actualCloses = String.Join(",", channelCloseMethodsCalled);
Assert.True(String.Equals(expectedCloses, actualCloses, StringComparison.Ordinal),
String.Format("Expected channel close methods to be '{0}' but actual was '{1}'.",
expectedCloses, actualCloses));
actualOpens = String.Join(",", factoryOpenMethodsCalled);
Assert.True(String.Equals(expectedOpens, actualOpens, StringComparison.Ordinal),
String.Format("Expected factory open methods to be '{0}' but actual was '{1}'.",
expectedOpens, actualOpens));
actualCloses = String.Join(",", factoryCloseMethodsCalled);
Assert.True(String.Equals(expectedCloses, actualCloses, StringComparison.Ordinal),
String.Format("Expected factory close methods to be '{0}' but actual was '{1}'.",
expectedCloses, actualCloses));
Assert.True(factory.State == CommunicationState.Closed,
String.Format("Expected factory's final state to be Closed but was '{0}'", factory.State));
Assert.True(((ICommunicationObject)channel).State == CommunicationState.Closed,
String.Format("Expected channel's final state to be Closed but was '{0}'", ((ICommunicationObject)channel).State));
}