Joseph Doherty
febb268d89
Per-run inline sink for ScriptTrace audit events (Flow Debugger design 2026-09-05 §5.4): cap 500, Truncated flag, lock-based; the audit rows stay complete beyond the cap. Claude-Session: https://claude.ai/code/session_01GSLkkHKz9JrAtmJjmQK3cP
68 lines
1.9 KiB
C#
68 lines
1.9 KiB
C#
using ZB.MOM.WW.Audit;
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using ZB.MOM.WW.ScadaBridge.SiteRuntime.Scripts;
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namespace ZB.MOM.WW.ScadaBridge.SiteRuntime.Tests.Scripts;
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/// <summary>Flow Debugger design 2026-09-05 §5.4: the per-run inline trace sink.</summary>
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public class FlowTraceCollectorTests
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{
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private static AuditEvent Evt(int i) => new()
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{
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EventId = Guid.NewGuid(),
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OccurredAtUtc = DateTimeOffset.UtcNow,
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Actor = "t",
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Action = "ScriptTrace.AttributeWrite",
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Outcome = AuditOutcome.Success,
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Target = i.ToString(),
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};
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[Fact]
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public void Add_BeyondCap_KeepsFirstN_AndFlagsTruncated()
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{
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var c = new FlowTraceCollector(maxEvents: 500);
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Assert.False(c.Truncated);
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for (var i = 0; i < 501; i++) c.Add(Evt(i));
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var snap = c.Snapshot();
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Assert.Equal(500, snap.Count);
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Assert.True(c.Truncated);
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Assert.Equal("0", snap[0].Target);
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Assert.Equal("499", snap[499].Target);
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}
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[Fact]
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public void Snapshot_IsACopy_InEmissionOrder()
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{
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var c = new FlowTraceCollector();
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c.Add(Evt(1));
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var first = c.Snapshot();
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c.Add(Evt(2));
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Assert.Single(first);
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Assert.Equal(2, c.Count);
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Assert.Equal(new[] { "1", "2" }, c.Snapshot().Select(e => e.Target));
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}
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[Fact]
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public async Task ConcurrentAdds_NeverThrow_AndNeverExceedCap()
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{
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var c = new FlowTraceCollector(maxEvents: 100);
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var tasks = Enumerable.Range(0, 8).Select(t => Task.Run(() =>
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{
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for (var i = 0; i < 50; i++) c.Add(Evt(t * 100 + i));
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}));
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await Task.WhenAll(tasks);
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Assert.Equal(100, c.Snapshot().Count);
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Assert.True(c.Truncated);
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}
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[Fact]
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public void DefaultCap_Is500_AndNonPositiveCapIsRejected()
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{
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Assert.Equal(500, FlowTraceCollector.DefaultMaxEvents);
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Assert.Throws<ArgumentOutOfRangeException>(() => new FlowTraceCollector(0));
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}
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}
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