43 lines
2.1 KiB
C#
43 lines
2.1 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.S7.IntegrationTests.S7_1500;
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/// <summary>
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/// End-to-end coverage for the S7 driver's diagnostics surface against the python-snap7
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/// S7-1500 simulator. The simulator runs the upstream Snap7 server which negotiates a
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/// fixed 240-byte PDU during the COTP handshake; this suite asserts the driver captures
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/// and surfaces that value through <c>DriverHealth.Diagnostics["S7.NegotiatedPduSize"]</c>
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/// so the Admin UI driver-diagnostics panel can render it.
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/// </summary>
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[Collection(Snap7ServerCollection.Name)]
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[Trait("Category", "Integration")]
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[Trait("Device", "S7_1500")]
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public sealed class S7_1500DiagnosticsTests(Snap7ServerFixture sim)
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{
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[Fact]
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public async Task Driver_exposes_negotiated_pdu_size_post_init()
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{
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if (sim.SkipReason is not null) Assert.Skip(sim.SkipReason);
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var options = S7_1500Profile.BuildOptions(sim.Host, sim.Port);
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await using var drv = new S7Driver(options, driverInstanceId: "s7-pdu-diag");
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await drv.InitializeAsync("{}", TestContext.Current.CancellationToken);
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// Issue a read so BuildDiagnostics() flows into _health.Diagnostics through the
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// Healthy state-transition (the post-OpenAsync construction also seeds it, but we
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// exercise the read path too so the assertion is robust against future refactors
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// that move the seed point).
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var snapshots = await drv.ReadAsync(
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[S7_1500Profile.ProbeTag], TestContext.Current.CancellationToken);
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snapshots[0].StatusCode.ShouldBe(0u, "probe read must succeed before checking diagnostics");
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var diagnostics = drv.GetHealth().DiagnosticsOrEmpty;
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diagnostics.ContainsKey("S7.NegotiatedPduSize").ShouldBeTrue(
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"S7 driver must surface negotiated PDU size as S7.NegotiatedPduSize");
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diagnostics["S7.NegotiatedPduSize"].ShouldBeGreaterThan(0,
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"Snap7 negotiates a 240-byte PDU on every COTP handshake — anything ≤ 0 means the snapshot was missed");
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}
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}
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