Joseph Doherty
112 lines
3.8 KiB
C#
112 lines
3.8 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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namespace ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Tests;
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/// <summary>#276 — counters are thread-safe and surface through <c>DriverHealth.Diagnostics</c>.</summary>
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[Trait("Category", "Unit")]
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public sealed class OpcUaClientDiagnosticsTests
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{
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[Fact]
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public void Fresh_snapshot_is_all_zero_with_the_full_key_set()
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{
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var snap = new OpcUaClientDiagnostics().Snapshot();
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snap.Keys.ShouldBe(
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[
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"PublishResponseCount", "NotificationCount", "DataChangeCount", "BadStatusValueCount",
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"PublishErrorCount", "KeepAliveMissCount", "ReconnectAttemptCount", "ReconnectSuccessCount",
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"ReconnectExhaustedCount", "LastReconnectUtcTicks", "ReadCallCount", "ReadFailureCount",
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"WriteCallCount", "WriteFailureCount", "ChunkedRequestCount",
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], ignoreOrder: true);
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snap.Values.ShouldAllBe(v => v == 0);
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}
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[Fact]
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public void Each_recorder_moves_exactly_its_own_counter()
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{
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var d = new OpcUaClientDiagnostics();
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d.RecordPublishResponse();
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d.RecordNotifications(3);
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d.RecordDataChange(bad: false);
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d.RecordDataChange(bad: true);
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d.RecordPublishError();
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d.RecordKeepAliveMiss();
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d.RecordReconnectAttempt();
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d.RecordReconnectSucceeded();
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d.RecordReconnectExhausted();
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d.RecordRead(failed: true);
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d.RecordWrite(failed: false);
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d.RecordChunkedRequest();
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var s = d.Snapshot();
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s["PublishResponseCount"].ShouldBe(1);
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s["NotificationCount"].ShouldBe(3);
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s["DataChangeCount"].ShouldBe(2);
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s["BadStatusValueCount"].ShouldBe(1);
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s["PublishErrorCount"].ShouldBe(1);
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s["KeepAliveMissCount"].ShouldBe(1);
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s["ReconnectAttemptCount"].ShouldBe(1);
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s["ReconnectSuccessCount"].ShouldBe(1);
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s["ReconnectExhaustedCount"].ShouldBe(1);
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s["LastReconnectUtcTicks"].ShouldBeGreaterThan(0);
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s["ReadCallCount"].ShouldBe(1);
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s["ReadFailureCount"].ShouldBe(1);
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s["WriteCallCount"].ShouldBe(1);
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s["WriteFailureCount"].ShouldBe(0);
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s["ChunkedRequestCount"].ShouldBe(1);
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}
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[Fact]
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public void Concurrent_increments_do_not_lose_updates()
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{
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var d = new OpcUaClientDiagnostics();
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const int threads = 8, each = 5_000;
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Parallel.For(0, threads, _ =>
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{
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for (var i = 0; i < each; i++) { d.RecordDataChange(bad: i % 2 == 0); d.RecordNotifications(2); }
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});
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var s = d.Snapshot();
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s["DataChangeCount"].ShouldBe(threads * each);
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s["BadStatusValueCount"].ShouldBe(threads * each / 2);
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s["NotificationCount"].ShouldBe(threads * each * 2);
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}
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[Fact]
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public void Snapshot_is_a_point_in_time_copy()
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{
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var d = new OpcUaClientDiagnostics();
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var before = d.Snapshot();
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d.RecordKeepAliveMiss();
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before["KeepAliveMissCount"].ShouldBe(0);
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d.Snapshot()["KeepAliveMissCount"].ShouldBe(1);
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}
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[Fact]
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public void GetHealth_carries_the_diagnostics_and_keeps_state_fields()
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{
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using var drv = new OpcUaClientDriver(new OpcUaClientDriverOptions(), "opcua-diag");
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drv.DiagnosticsForTest.RecordKeepAliveMiss();
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drv.DiagnosticsForTest.RecordKeepAliveMiss();
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var h = drv.GetHealth();
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h.State.ShouldBe(DriverState.Unknown);
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h.Diagnostics.ShouldNotBeNull();
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h.Diagnostics!["KeepAliveMissCount"].ShouldBe(2);
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}
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[Fact]
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public void DriverHealth_without_diagnostics_stays_back_compatible()
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{
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var h = new DriverHealth(DriverState.Healthy, null, null);
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h.Diagnostics.ShouldBeNull();
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h.ShouldBe(new DriverHealth(DriverState.Healthy, null, null));
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}
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}
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