public void TestConsumer_ConsumerGroupCommit()
{
var mocks = InitCluster();
mocks.Group.SetupGet(g => g.Configuration)
.Returns(new ConsumerGroupConfiguration {
AutoCommitEveryMs = -1, SessionTimeoutMs = 10
});
var consumer = new ConsumeRouter(mocks.Cluster.Object,
new Configuration {
TaskScheduler = new CurrentThreadTaskScheduler(), ConsumeBatchSize = 1
}, 1);
consumer.StartConsumeSubscription(mocks.Group.Object, new[] { "the topic" });
Thread.Sleep(10); // wait for at least one heartbeat to be sent
consumer.Acknowledge(new CommonAcknowledgement <FetchResponse>
{
ReceivedDate = DateTime.UtcNow,
Response = new FetchResponse {
FetchPartitionResponse =
new CommonResponse <FetchPartitionResponse>
{
TopicsResponse =
new[]
{
new TopicData <FetchPartitionResponse>
{
TopicName = "the topic",
PartitionsData =
new[]
{
new FetchPartitionResponse
{
Partition = 1,
Messages =
new List <ResponseMessage>
{
new ResponseMessage {
Offset = 28, Message = new Message()
}
}
}
}
}
}
}
}
});
mocks.Group.Verify(g => g.Commit(It.IsAny <IEnumerable <TopicData <OffsetCommitPartitionData> > >()), Times.Never); // no auto commit
consumer.RequireCommit();
mocks.Group.Verify(g => g.Commit(It.Is <IEnumerable <TopicData <OffsetCommitPartitionData> > >(l =>
l.Count() == 1 && l.First().TopicName == "the topic" &&
l.First().PartitionsData.Count() == 2 &&
l.First().PartitionsData.First().Partition == 1 &&
l.First().PartitionsData.First().Metadata == "" &&
l.First().PartitionsData.First().Offset == 29)), // Offset saved should be next expected offset
Times.Once);
}