public static async Task KafkaSenderSendAsyncAddsSchemaIdToPayload()
{
var message = "This is a message";
var schemaId = 100;
var producerMock = new Mock <IProducer <string, byte[]> >();
Message <string, byte[]>?sentMessage = null;
producerMock
.Setup(pm => pm.ProduceAsync(It.IsAny <string>(), It.IsAny <Message <string, byte[]> >(), It.IsAny <CancellationToken>()))
.Callback <string, Message <string, byte[]>, CancellationToken>((str, msg, ct) => sentMessage = msg)
.ReturnsAsync((DeliveryResult <string, byte[]>)null !);
using var sender = new KafkaSender("name", "topic", schemaId, "servers");
sender.Unlock()._producer = new Lazy <IProducer <string, byte[]> >(() => producerMock.Object);
await sender.SendAsync(new SenderMessage(message)).ConfigureAwait(false);
Assert.Equal(0, BitConverter.ToInt32(sentMessage !.Value, 0));
Assert.Equal(schemaId, IPAddress.NetworkToHostOrder(BitConverter.ToInt32(sentMessage.Value, 1)));
var memory = new Memory <byte>(sentMessage.Value, 5, sentMessage.Value.Length - 5);
Assert.Equal(message, Encoding.UTF8.GetString(memory.ToArray()));
Assert.Equal("Kafka", Encoding.UTF8.GetString(sentMessage.Headers[1].GetValueBytes()));
}
public static void KafkaSenderDispose()
{
var producerMock = new Mock <IProducer <string, byte[]> >();
producerMock.Setup(pm => pm.Flush(It.IsAny <TimeSpan>()));
producerMock.Setup(pm => pm.Dispose());
using var sender = new KafkaSender("name", "topic", "servers");
var senderUnlocked = sender.Unlock();
senderUnlocked._producer = new Lazy <IProducer <string, byte[]> >(() => producerMock.Object);
_ = senderUnlocked._producer.Value;
senderUnlocked.Dispose();
producerMock.Verify(pm => pm.Flush(It.IsAny <TimeSpan>()), Times.Once);
producerMock.Verify(pm => pm.Dispose(), Times.Once);
}
public static async Task KafkaSenderSendAsyncSettingOriginatingSystemToKafka()
{
var message = "This is a message";
var producerMock = new Mock <IProducer <string, byte[]> >();
producerMock
.Setup(pm => pm.ProduceAsync(It.IsAny <string>(), It.IsAny <Message <string, byte[]> >(), It.IsAny <CancellationToken>()))
.ReturnsAsync((DeliveryResult <string, byte[]>)null !);
using var sender = new KafkaSender("name", "topic", "servers");
sender.Unlock()._producer = new Lazy <IProducer <string, byte[]> >(() => producerMock.Object);
await sender.SendAsync(new SenderMessage(message)).ConfigureAwait(false);
producerMock.Verify(pm => pm.ProduceAsync("topic",
It.Is <Message <string, byte[]> >(m => Encoding.UTF8.GetString(m.Value) == message && Encoding.UTF8.GetString(m.Headers[1].GetValueBytes()) == "Kafka"),
It.IsAny <CancellationToken>()));
}
public static void CallAddStatisticsEmittedHandlerForSender()
{
using var sender = new KafkaSender("NAME", "TOPIC", 1, "SERVERS");
var statsData = "STATS!";
var callCount = 0;
void Handler(object?s, string stats)
{
s.Should().BeSameAs(sender);
stats.Should().Be(statsData);
callCount++;
}
sender.AddStatisticsEmittedHandler(Handler);
sender.Unlock().OnStatisticsEmitted(null, statsData);
callCount.Should().Be(1, "Event handler should have been called");
}