Joseph Doherty
55 lines
2.4 KiB
C#
55 lines
2.4 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>
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/// Unit tests for <c>ISubscribable</c> + <c>IHostConnectivityProbe</c> that don't need a
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/// live remote server. The live-session tests (subscribe/unsubscribe round-trip,
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/// keep-alive transitions) live in <c>OpcUaServer.IntegrationTests/OpcUaClientDriverWireTests</c>.
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/// </summary>
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[Trait("Category", "Unit")]
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public sealed class OpcUaClientSubscribeAndProbeTests
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{
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/// <summary>Verifies that subscribe without initialization throws InvalidOperationException.</summary>
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[Fact]
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public async Task SubscribeAsync_without_initialize_throws_InvalidOperationException()
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{
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using var drv = new OpcUaClientDriver(new OpcUaClientDriverOptions(), "opcua-sub-uninit");
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await Should.ThrowAsync<InvalidOperationException>(async () =>
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await drv.SubscribeAsync(["ns=2;s=Demo"], TimeSpan.FromMilliseconds(100), TestContext.Current.CancellationToken));
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}
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/// <summary>Verifies that unsubscribe with unknown handle is a no-op.</summary>
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[Fact]
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public async Task UnsubscribeAsync_with_unknown_handle_is_noop()
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{
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using var drv = new OpcUaClientDriver(new OpcUaClientDriverOptions(), "opcua-sub-unknown");
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// UnsubscribeAsync returns cleanly for handles it doesn't recognise — protects against
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// the caller's race with server-side cleanup after a session drop.
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await drv.UnsubscribeAsync(new FakeHandle(), TestContext.Current.CancellationToken);
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}
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/// <summary>Verifies that GetHostStatuses returns endpoint URL row before initialization.</summary>
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[Fact]
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public void GetHostStatuses_returns_endpoint_url_row_pre_init()
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{
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using var drv = new OpcUaClientDriver(
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new OpcUaClientDriverOptions { EndpointUrl = "opc.tcp://plc.example:4840" },
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"opcua-hosts");
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var rows = drv.GetHostStatuses();
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rows.Count.ShouldBe(1);
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rows[0].HostName.ShouldBe("opc.tcp://plc.example:4840",
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"host identity mirrors the endpoint URL so the Admin /hosts dashboard can link back to the remote server");
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rows[0].State.ShouldBe(HostState.Unknown);
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}
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/// <summary>A fake subscription handle for testing.</summary>
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private sealed class FakeHandle : ISubscriptionHandle
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{
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/// <inheritdoc />
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public string DiagnosticId => "fake";
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}
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}
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