public async Task PublishAsync_should_throw_when_input_invalid()
{
var producer = NSubstitute.Substitute.For <IProducer <Guid, byte[]> >();
var serializer = NSubstitute.Substitute.For <ITransportSerializer>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaPublisherExecutor> >();
var sut = new KafkaPublisherExecutor(producer, serializer, logger);
await Assert.ThrowsAsync <ArgumentNullException>(async() => await sut.PublishAsync(null, "lorem"));
await Assert.ThrowsAsync <ArgumentNullException>(async() => await sut.PublishAsync(DummyMessage.New(), null));
await Assert.ThrowsAsync <ArgumentNullException>(async() => await sut.PublishAsync(DummyMessage.New(), ""));
await Assert.ThrowsAsync <ArgumentNullException>(async() => await sut.PublishAsync(DummyMessage.New(), " "));
}
public async Task PublishAsync_should_publish_message()
{
var message = DummyMessage.New();
var topicName = "lorem";
var producerResult = new DeliveryResult <Guid, byte[]>()
{
Status = PersistenceStatus.Persisted
};
var producer = NSubstitute.Substitute.For <IProducer <Guid, byte[]> >();
producer.ProduceAsync(topicName, Arg.Any <Message <Guid, byte[]> >(), Arg.Any <CancellationToken>())
.Returns(producerResult);
var serializer = NSubstitute.Substitute.For <ITransportSerializer>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaPublisherExecutor> >();
var sut = new KafkaPublisherExecutor(producer, serializer, logger);
await sut.PublishAsync(message, topicName);
await producer.Received(1)
.ProduceAsync(topicName,
Arg.Is((Message <Guid, byte[]> km) => km.Headers.Any(h =>
h.Key == HeaderNames.MessageType) &&
km.Key == message.Id));
}
public async Task PublishAsync_should_include_additional_headers_when_provided()
{
var message = DummyMessage.New();
var topicName = "lorem";
var producerResult = new DeliveryResult <Guid, byte[]>()
{
Status = PersistenceStatus.Persisted
};
var producer = NSubstitute.Substitute.For <IProducer <Guid, byte[]> >();
producer.ProduceAsync(topicName, Arg.Any <Message <Guid, byte[]> >(), Arg.Any <CancellationToken>())
.Returns(producerResult);
var serializer = NSubstitute.Substitute.For <ITransportSerializer>();
var logger = NSubstitute.Substitute.For <ILogger <KafkaPublisherExecutor> >();
var sut = new KafkaPublisherExecutor(producer, serializer, logger);
var headers = new[]
{
new Header("lorem", Encoding.UTF8.GetBytes("ipsum")),
new Header("dolor", Encoding.UTF8.GetBytes("amet"))
};
await sut.PublishAsync(message, topicName, headers);
await producer.Received(1)
.ProduceAsync(topicName,
Arg.Is((Message <Guid, byte[]> km) => km.Headers.Count == 3 &&
km.Headers.Single(h => h.Key == HeaderNames.MessageType) != null &&
km.Headers.Single(h => h.Key == "lorem") != null &&
km.Headers.Single(h => h.Key == "dolor") != null &&
km.Key == message.Id));
}