Joseph Doherty
c4186509f6
Interface now lives in Commons.Interfaces.Services; AuditLog no longer gets it transitively through Communication. Implementation stays in HealthMonitoring. Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV
68 lines
2.7 KiB
C#
68 lines
2.7 KiB
C#
using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Services;
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namespace ZB.MOM.WW.ScadaBridge.HealthMonitoring.Tests;
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/// <summary>
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/// Regression coverage. <see cref="ISiteEventLogger.FailedWriteCount"/>
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/// is a cumulative (point-in-time) counter. A periodic
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/// <c>SiteEventLogFailureCountReporter</c> hosted service polls the count and
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/// pushes it into the collector via
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/// <see cref="ISiteHealthCollector.SetSiteEventLogWriteFailures"/> so the next
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/// <see cref="ISiteHealthCollector.CollectReport"/> includes it in the report
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/// payload as <c>SiteEventLogWriteFailures</c>. Unlike the per-interval
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/// SiteAuditWriteFailures counter, this value is NOT reset on collect — it
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/// carries forward whatever the most recent poller push delivered.
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/// </summary>
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public class SiteEventLogWriteFailuresMetricTests
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{
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private readonly SiteHealthCollector _collector = new();
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/// <summary>Verifies that a count that was set appears in the collected report.</summary>
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[Fact]
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public void Set_Then_CollectReport_IncludesCount()
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{
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_collector.SetSiteEventLogWriteFailures(17L);
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var report = _collector.CollectReport("site-1");
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Assert.Equal(17L, report.SiteEventLogWriteFailures);
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}
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/// <summary>Verifies that the report payload includes the site event log write failure count, defaulting to zero.</summary>
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[Fact]
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public void Report_Payload_Includes_SiteEventLogWriteFailures_AsZeroByDefault()
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{
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var report = _collector.CollectReport("site-1");
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Assert.Equal(0L, report.SiteEventLogWriteFailures);
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}
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/// <summary>Verifies that collecting a report does not reset the site event log write failure count.</summary>
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[Fact]
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public void CollectReport_DoesNotReset_SiteEventLogWriteFailures()
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{
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// This is a point-in-time cumulative count — successive CollectReport
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// calls before the next poller tick MUST carry forward the same value
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// rather than resetting to zero (which would falsely indicate no failures
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// between the two reports).
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_collector.SetSiteEventLogWriteFailures(42L);
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var first = _collector.CollectReport("site-1");
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var second = _collector.CollectReport("site-1");
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Assert.Equal(42L, first.SiteEventLogWriteFailures);
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Assert.Equal(42L, second.SiteEventLogWriteFailures);
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}
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/// <summary>Verifies that setting the count overwrites the previous value.</summary>
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[Fact]
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public void Set_Overwrites_Previous_Value()
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{
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_collector.SetSiteEventLogWriteFailures(5L);
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_collector.SetSiteEventLogWriteFailures(9L);
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var report = _collector.CollectReport("site-1");
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Assert.Equal(9L, report.SiteEventLogWriteFailures);
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}
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}
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