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($"Topic '{topic}' has no message type registered with: {messageTypeTopicMap.GetType()}.", ex.Message);
}
public async Task Handle_DeserializerReturnsNull_ThrowsInvalidOperation(
string topic,
byte[] message,
[Frozen] IMessageTypeTopicMap messageTypeTopicMap,
[Frozen] ISerializer serializer,
DispatchingRawMessageHandler sut)
{
var messageType = GetType();
messageTypeTopicMap.Get(topic).Returns(messageType);
serializer.Deserialize(messageType, message).ReturnsNull();
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => sut.Handle(topic, message, None));
Assert.Equal($"Serializer {serializer.GetType()} returned null for the {message.Length}-byte message of type {messageType}.", ex.Message);
}
public async Task 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 Handle_NullMessage_ThrowsArgumentNull(DispatchingRawMessageHandler sut)
{
var ex = await Assert.ThrowsAsync <ArgumentNullException>(() => sut.Handle("topic.name", null, None));
Assert.Equal("message", ex.ParamName);
}
public async Task Handle_NullTopic_ThrowsArgumentNull(DispatchingRawMessageHandler sut)
{
var ex = await Assert.ThrowsAsync <ArgumentNullException>(() => sut.Handle(null, new byte[0], None));
Assert.Equal("topic", ex.ParamName);
}