public async Task StartAsync_should_not_republish_to_deadletter_when_exception_occurs_and_no_deadletter_available()
{
var consumeResult = new ConsumeResult <Guid, byte[]>();
var expectedMessage = NSubstitute.Substitute.For <IMessage>();
var queueRefs = new QueueReferences("lorem", "");
var parser = NSubstitute.Substitute.For <IMessageParser>();
parser.Parse(consumeResult)
.Returns(expectedMessage);
var messageProcessor = NSubstitute.Substitute.For <IMessageProcessor>();
messageProcessor.WhenForAnyArgs(mp => mp.ProcessAsync((dynamic)expectedMessage))
.Throw(new Exception("whoops"));
var publisher = NSubstitute.Substitute.For <IKafkaPublisherExecutor>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaMessageHandler> >();
var sysInfo = SystemInfo.New();
var sut = new KafkaMessageHandler(parser, messageProcessor, publisher, logger, sysInfo);
await sut.HandleAsync(consumeResult, queueRefs);
await publisher.DidNotReceiveWithAnyArgs().PublishAsync(Arg.Any <IMessage>(),
Arg.Any <string>(),
null,
Arg.Any <CancellationToken>());
}
public async Task StartAsync_should_republish_to_deadletter_when_exception_occurs()
{
var consumeResult = new ConsumeResult <Guid, byte[]>();
var expectedMessage = NSubstitute.Substitute.For <IMessage>();
var queueRefs = new QueueReferences("lorem", "ipsum");
var parser = NSubstitute.Substitute.For <IMessageParser>();
parser.Parse(consumeResult)
.Returns(expectedMessage);
var ex = new Exception("whoops");
var expectedErrorHeader = new Header(HeaderNames.Error, Encoding.UTF8.GetBytes(ex.Message));
var messageProcessor = NSubstitute.Substitute.For <IMessageProcessor>();
messageProcessor.WhenForAnyArgs(mp => mp.ProcessAsync((dynamic)expectedMessage))
.Throw(ex);
var publisher = NSubstitute.Substitute.For <IKafkaPublisherExecutor>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaMessageHandler> >();
var sysInfo = SystemInfo.New();
var sut = new KafkaMessageHandler(parser, messageProcessor, publisher, logger, sysInfo);
await sut.HandleAsync(consumeResult, queueRefs);
await publisher.Received().PublishAsync(expectedMessage, queueRefs.DeadLetterTopicName,
Arg.Is((Header[] headers) => headers.Any(h => h.Key == expectedErrorHeader.Key)),
Arg.Any <CancellationToken>());
}
public async Task StartAsync_should_parse_incoming_messages()
{
var parser = NSubstitute.Substitute.For <IMessageParser>();
var messageProcessor = NSubstitute.Substitute.For <IMessageProcessor>();
var publisher = NSubstitute.Substitute.For <IKafkaPublisherExecutor>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaMessageHandler> >();
var sysInfo = SystemInfo.New();
var queueRefs = new QueueReferences("lorem", "ipsum");
var consumeResult = new ConsumeResult <Guid, byte[]>();
var sut = new KafkaMessageHandler(parser, messageProcessor, publisher, logger, sysInfo);
await sut.HandleAsync(consumeResult, queueRefs);
parser.Received().Parse(consumeResult);
}
public async Task StartAsync_should_process_incoming_messages()
{
var consumeResult = new ConsumeResult <Guid, byte[]>();
var expectedMessage = NSubstitute.Substitute.For <IMessage>();
var queueRefs = new QueueReferences("lorem", "ipsum");
var parser = NSubstitute.Substitute.For <IMessageParser>();
parser.Parse(consumeResult)
.Returns(expectedMessage);
var messageProcessor = NSubstitute.Substitute.For <IMessageProcessor>();
var publisher = NSubstitute.Substitute.For <IKafkaPublisherExecutor>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaMessageHandler> >();
var sysInfo = SystemInfo.New();
var sut = new KafkaMessageHandler(parser, messageProcessor, publisher, logger, sysInfo);
await sut.HandleAsync(consumeResult, queueRefs);
await messageProcessor.Received().ProcessAsync((dynamic)expectedMessage, Arg.Any <CancellationToken>());
}
public async Task StartAsync_should_hanle_null_messages()
{
var consumeResult = new ConsumeResult <Guid, byte[]>();
var queueRefs = new QueueReferences("lorem", "ipsum");
var parser = NSubstitute.Substitute.For <IMessageParser>();
parser.Parse(consumeResult)
.ReturnsNull();
var messageProcessor = NSubstitute.Substitute.For <IMessageProcessor>();
var publisher = NSubstitute.Substitute.For <IKafkaPublisherExecutor>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaMessageHandler> >();
var sysInfo = SystemInfo.New();
var sut = new KafkaMessageHandler(parser, messageProcessor, publisher, logger, sysInfo);
await sut.HandleAsync(consumeResult, queueRefs);
await messageProcessor.DidNotReceiveWithAnyArgs()
.ProcessAsync(Arg.Any <IMessage>(), Arg.Any <CancellationToken>());
}