Joseph Doherty
71 lines
3.0 KiB
C#
71 lines
3.0 KiB
C#
using System.Text.Json;
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using Moq;
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using Opc.Ua;
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using Opc.Ua.Client;
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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>
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/// Gitea #764 — the SDK keeps sending publish requests on a session that holds no subscription, and the server
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/// answers each with an anonymous (id 0) <c>BadNoSubscription</c>. With nothing tracked there is nothing to lose,
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/// so those answers must not inflate the <c>publish_error</c> counter. Any other PublishError still counts.
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/// </summary>
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[Trait("Category", "Unit")]
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public sealed class OpcUaClientIdlePublishErrorTests
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{
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private const string SpeedRef = "Plant/dev/Speed";
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private const string AlarmRef = "Plant/dev/TempHi";
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private static readonly IReadOnlyList<RawTagEntry> Tags =
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[
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new(SpeedRef, JsonSerializer.Serialize(new { nodeId = "ns=0;s=Speed" }), WriteIdempotent: true),
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];
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private static OpcUaClientDriver NewConnectedDriver(string instance)
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{
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var drv = new OpcUaClientDriver(new OpcUaClientDriverOptions { RawTags = Tags }, instance);
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var session = new Mock<ISession>(MockBehavior.Loose);
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session.SetupGet(s => s.MessageContext).Returns(ServiceMessageContext.Create(SdkTelemetry.Context));
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session.SetupGet(s => s.NamespaceUris).Returns(new NamespaceTable());
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drv.SetSessionForTest(session.Object);
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drv.SetNamespaceMapForTest(NamespaceMap.FromTable(new NamespaceTable(), Tags));
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drv.SetHealthForTest(new DriverHealth(DriverState.Healthy, DateTime.UtcNow, null));
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return drv;
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}
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[Fact]
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public async Task An_anonymous_BadNoSubscription_on_an_idle_session_is_not_counted()
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{
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var instance = $"opcua-764-{Guid.NewGuid():N}";
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using var cap = new OpcUaClientDiagnosticsTests.Capture(instance);
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var drv = NewConnectedDriver(instance);
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await using var _ = drv;
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drv.RaisePublishErrorForTest(StatusCodes.BadNoSubscription);
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drv.RaisePublishErrorForTest(StatusCodes.BadNoSubscription);
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cap[OpcUaClientDiagnostics.PublishError].ShouldBe(0, "idle-session publish answers are not errors");
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// Positive control: any other publish error on the same idle driver still counts.
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drv.RaisePublishErrorForTest(StatusCodes.BadTooManyPublishRequests);
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cap[OpcUaClientDiagnostics.PublishError].ShouldBe(1);
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drv.GetHealth().State.ShouldBe(DriverState.Healthy);
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}
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[Fact]
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public async Task An_anonymous_BadNoSubscription_with_a_tracked_subscription_is_still_counted()
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{
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var instance = $"opcua-764-{Guid.NewGuid():N}";
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using var cap = new OpcUaClientDiagnosticsTests.Capture(instance);
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var drv = NewConnectedDriver(instance);
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await using var _ = drv;
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drv.AddAlarmSubscriptionForTest([AlarmRef]);
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drv.RaisePublishErrorForTest(StatusCodes.BadNoSubscription);
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cap[OpcUaClientDiagnostics.PublishError].ShouldBe(1);
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}
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}
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