42 lines
1.2 KiB
C#
42 lines
1.2 KiB
C#
using NATS.Server.JetStream;
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using NATS.Server.JetStream.Models;
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namespace NATS.Server.Tests;
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public class JetStreamConsumerBackoffParityTests
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{
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[Fact]
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public async Task Redelivery_honors_backoff_schedule_and_stops_after_max_deliver()
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{
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var streams = new StreamManager();
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streams.CreateOrUpdate(new StreamConfig
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{
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Name = "ORDERS",
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Subjects = ["orders.*"],
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});
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streams.Capture("orders.created", "x"u8.ToArray());
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var consumers = new ConsumerManager();
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consumers.CreateOrUpdate("ORDERS", new ConsumerConfig
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{
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DurableName = "C1",
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AckPolicy = AckPolicy.Explicit,
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AckWaitMs = 1,
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MaxDeliver = 3,
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BackOffMs = [1, 1],
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});
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var deliveries = new List<ulong>();
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for (var i = 0; i < 6; i++)
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{
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var batch = await consumers.FetchAsync("ORDERS", "C1", 1, streams, default);
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if (batch.Messages.Count > 0 && batch.Messages[0].Redelivered)
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deliveries.Add(batch.Messages[0].Sequence);
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await Task.Delay(2);
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}
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deliveries.Count.ShouldBe(3);
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}
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}
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