///<inheritdoc />
public Task Publish <TMessage>(TMessage message, CancellationToken token)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
var topic = _typeTopicMap.Get(message.GetType());
if (topic == null)
{
throw new InvalidOperationException(
$"Message type {message.GetType()} is not registered with: {_typeTopicMap.GetType()}.");
}
var serialized = _serializer.Serialize(message);
if (serialized == null)
{
throw new InvalidOperationException(
$"Serializer {_serializer.GetType()} returned null for message of type {message.GetType()}.");
}
return(_rawMessagePublisher.Publish(topic, serialized, token));
}
///<inheritdoc />
public Task Handle(string topic, byte[] message, CancellationToken token)
{
if (topic == null)
{
throw new ArgumentNullException(nameof(topic));
}
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
var messageType = _typeTopicMap.Get(topic);
if (messageType == null)
{
throw new InvalidOperationException(
$"Topic '{topic}' has no message type registered with: {_typeTopicMap.GetType()}.");
}
var deserialized = _serializer.Deserialize(messageType, message);
if (deserialized == null)
{
throw new InvalidOperationException(
$"Serializer {_serializer.GetType()} returned null for the {message.Length}-byte message of type {messageType}.");
}
return(_messageHandlerInvoker.Invoke(deserialized, token));
}
public async Task Handle_TopicMapNotDefined_ThrowsInvalidOperation(
string topic,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
DispatchingRawMessageHandler sut)
{
messageTypeTopicMap.Get(topic).ReturnsNull();
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => sut.Handle(topic, new byte[0], None));
Assert.Equal($"Topic '{topic}' has no message type registered with: {messageTypeTopicMap.GetType()}.", ex.Message);
}
public async Task Publish_TopicMapNotDefined_ThrowsInvalidOperation(
string message,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
SerializedMessagePublisher sut)
{
messageTypeTopicMap.Get(message.GetType()).ReturnsNull();
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => sut.Publish(message, None));
Assert.Equal($"Message type {message.GetType()} is not registered with: {messageTypeTopicMap.GetType()}.",
ex.Message);
}
public async Task Handle_DeserializerReturnsNull_ThrowsInvalidOperation(
string topic,
byte[] message,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
[Frozen] ISerializer serializer,
DispatchingRawMessageHandler sut)
{
var messageType = GetType();
messageTypeTopicMap.Get(topic).Returns(messageType);
serializer.Deserialize(messageType, message).ReturnsNull();
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => sut.Handle(topic, message, None));
Assert.Equal($"Serializer {serializer.GetType()} returned null for the {message.Length}-byte message of type {messageType}.", ex.Message);
}
public async Task Publish_SerializerReturnsNull_ThrowsInvalidOperation(
string topic,
string message,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
[Frozen] ISerializer serializer,
SerializedMessagePublisher sut)
{
var messageType = GetType();
messageTypeTopicMap.Get(topic).Returns(messageType);
serializer.Serialize(message).ReturnsNull();
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => sut.Publish(message, None));
Assert.Equal(
$"Serializer {serializer.GetType()} returned null for message of type {message.GetType()}.",
ex.Message);
}
public async Task Handle_DeserializedMessage_CallsInvoker(
string topic,
byte[] message,
object deserializedObject,
[Frozen] IMessageHandlerInvoker messageHandlerInvoker,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
[Frozen] ISerializer serializer,
DispatchingRawMessageHandler sut)
{
// Arrange
var messageType = GetType();
messageTypeTopicMap.Get(topic).Returns(messageType);
serializer.Deserialize(messageType, message).Returns(deserializedObject);
// Act
await sut.Handle(topic, message, None);
// Assert
await messageHandlerInvoker.Received().Invoke(deserializedObject, None);
}
public async Task Publish_SerializedMessage_CallsRawPublisher(
string topic,
bool message,
byte[] serializedMessage,
[Frozen] IRawMessagePublisher rawMessagePublisher,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
[Frozen] ISerializer serializer,
SerializedMessagePublisher sut)
{
// Arrange
var messageType = message.GetType();
messageTypeTopicMap.Get(messageType).Returns(topic);
serializer.Serialize(message).Returns(serializedMessage);
// Act
await sut.Publish(message, None);
// Assert
await rawMessagePublisher.Received().Publish(topic, serializedMessage, None);
}
