Joseph Doherty
f02067d295
The tests probe a free port (bind 0, release) and start the SDK server later; under a highly parallel run another test can take the port in between and the SDK fails with 'Failed to establish tcp listener sockets for Ipv4 and IPv6.'. OpcUaHostStart.StartAsync builds a fresh host + server on a fresh port per attempt (up to 5) when the failure is a bind failure; all 45 start sites in OpcUaServer.Tests, OpcUaServer.IntegrationTests and Runtime.Tests use it. Per-attempt GUID ApplicationUris are hoisted out of the host factory because a changed URI against a reused PKI store fails with 'Cannot access private key'. Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
93 lines
3.5 KiB
C#
93 lines
3.5 KiB
C#
using Microsoft.Extensions.Logging.Abstractions;
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using Opc.Ua.Server;
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using Shouldly;
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using Xunit;
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namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
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/// <summary>
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/// #81 residual — verifies <see cref="SdkServiceLevelPublisher"/> locates the standard
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/// <c>VariableIds.Server_ServiceLevel</c> node through the SDK's DiagnosticsNodeManager and
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/// writes the byte value. Boots a real <see cref="StandardServer"/> on a free port so the
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/// SDK populates its predefined diagnostics nodes — that's what production sees.
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/// </summary>
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public sealed class SdkServiceLevelPublisherTests : IDisposable
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{
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private static CancellationToken Ct => TestContext.Current.CancellationToken;
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private readonly string _pkiRoot = Path.Combine(
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Path.GetTempPath(),
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$"otopcua-pki-{Guid.NewGuid():N}");
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/// <summary>Verifies that the publisher writes values to the standard Server.ServiceLevel variable.</summary>
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[Fact]
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public async Task Publish_writes_value_to_Server_ServiceLevel_variable()
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{
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var applicationUri = $"urn:OtOpcUa.SvcLevel:{Guid.NewGuid():N}";
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var started = await OpcUaHostStart.StartAsync(
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port => new OpcUaApplicationHost(
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new OpcUaApplicationHostOptions
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{
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ApplicationName = "OtOpcUa.SvcLevel",
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ApplicationUri = applicationUri,
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OpcUaPort = port,
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PublicHostname = "localhost",
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PkiStoreRoot = _pkiRoot,
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},
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NullLogger<OpcUaApplicationHost>.Instance),
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() => new StandardServer(), Ct);
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await using var host = started.Host;
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var server = started.Server;
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var publisher = new SdkServiceLevelPublisher(
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server.CurrentInstance,
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NullLogger<SdkServiceLevelPublisher>.Instance);
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publisher.Publish(200);
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var variable = server.CurrentInstance.ServerObject.ServiceLevel;
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variable.ShouldNotBeNull("Server.ServiceLevel must be present in the address space");
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variable.Value.ShouldBe((byte)200);
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}
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/// <summary>Verifies that publishing service level values is idempotent when called multiple times.</summary>
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[Fact]
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public async Task Publish_is_idempotent_when_called_multiple_times()
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{
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var applicationUri = $"urn:OtOpcUa.SvcLevel.Idem:{Guid.NewGuid():N}";
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var started = await OpcUaHostStart.StartAsync(
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port => new OpcUaApplicationHost(
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new OpcUaApplicationHostOptions
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{
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ApplicationName = "OtOpcUa.SvcLevel.Idem",
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ApplicationUri = applicationUri,
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OpcUaPort = port,
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PublicHostname = "localhost",
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PkiStoreRoot = _pkiRoot,
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},
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NullLogger<OpcUaApplicationHost>.Instance),
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() => new StandardServer(), Ct);
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await using var host = started.Host;
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var server = started.Server;
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var publisher = new SdkServiceLevelPublisher(
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server.CurrentInstance,
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NullLogger<SdkServiceLevelPublisher>.Instance);
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publisher.Publish(100);
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publisher.Publish(150);
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publisher.Publish(240);
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server.CurrentInstance.ServerObject.ServiceLevel.Value.ShouldBe((byte)240);
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}
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/// <summary>Disposes and cleans up the test resources.</summary>
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public void Dispose()
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{
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if (Directory.Exists(_pkiRoot))
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{
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try { Directory.Delete(_pkiRoot, recursive: true); }
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catch { /* best-effort */ }
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}
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}
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}
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