Joseph Doherty
57 lines
2.2 KiB
C#
57 lines
2.2 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Resilience;
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using ZB.MOM.WW.OtOpcUa.Host.Drivers;
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namespace ZB.MOM.WW.OtOpcUa.Host.IntegrationTests;
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/// <summary>
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/// Pure-DI (no fixture) coverage of the publisher's snapshot→message mapping — the only unit-testable
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/// seam of <see cref="DriverResilienceStatusPublisherService"/>. The DPS <c>Publish</c> shell is
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/// verified by the R2-10 live gate; this asserts the mapping the shell publishes.
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/// </summary>
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public sealed class DriverResilienceStatusPublisherServiceTests
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{
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private static readonly DateTime Published = new(2026, 7, 13, 9, 0, 0, DateTimeKind.Utc);
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private static readonly DateTime Sampled = new(2026, 7, 13, 8, 59, 0, DateTimeKind.Utc);
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[Fact]
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public void BuildMessages_EmptyTracker_ReturnsEmpty()
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{
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var tracker = new DriverResilienceStatusTracker();
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var messages = DriverResilienceStatusPublisherService.BuildMessages(tracker, Published);
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messages.ShouldBeEmpty();
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}
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[Fact]
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public void BuildMessages_MapsTrackerSnapshot_OneMessagePerInstanceHost()
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{
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var tracker = new DriverResilienceStatusTracker();
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// (drv-1, host-a): an open breaker with a standing failure count.
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tracker.RecordFailure("drv-1", "host-a", Sampled);
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tracker.RecordFailure("drv-1", "host-a", Sampled);
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tracker.RecordBreakerOpen("drv-1", "host-a", Sampled);
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// (drv-1, host-b): a healthy host with in-flight calls.
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tracker.RecordCallStart("drv-1", "host-b");
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var messages = DriverResilienceStatusPublisherService.BuildMessages(tracker, Published);
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messages.Count.ShouldBe(2);
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var open = messages.Single(m => m.HostName == "host-a");
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open.DriverInstanceId.ShouldBe("drv-1");
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open.BreakerOpen.ShouldBeTrue();
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open.ConsecutiveFailures.ShouldBe(2);
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open.LastBreakerOpenUtc.ShouldBe(Sampled);
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open.PublishedUtc.ShouldBe(Published);
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var healthy = messages.Single(m => m.HostName == "host-b");
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healthy.BreakerOpen.ShouldBeFalse();
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healthy.ConsecutiveFailures.ShouldBe(0);
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healthy.CurrentInFlight.ShouldBe(1);
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healthy.PublishedUtc.ShouldBe(Published);
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}
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}
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