Joseph Doherty
67 lines
2.8 KiB
C#
67 lines
2.8 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Driver.AbCip;
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namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.Tests;
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/// <summary>
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/// Gitea #534 — the authored EtherNet/IP port must reach libplctag's <c>gateway</c> attribute.
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/// </summary>
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/// <remarks>
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/// This driver carried the identical defect to AbLegacy, where it was found:
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/// <see cref="AbCipTagCreateParams.Port"/> was on the record and consumed by nobody, so the runtime
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/// handed libplctag the bare host and libplctag substituted 44818. It survived here precisely because
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/// it is invisible here — every AbCip fixture profile binds 44818, so no test this driver has could
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/// distinguish "uses the authored port" from "always uses 44818". Worth remembering as a shape: a
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/// fixture that only ever exercises the default value cannot falsify a rule about non-default values,
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/// however many tests point at it.
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/// </remarks>
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public sealed class AbCipGatewayCompositionTests
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{
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private static AbCipTagCreateParams Params(string host, int port) =>
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new(Gateway: host, Port: port, CipPath: "1,0", LibplctagPlcAttribute: "controllogix",
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TagName: "TestDINT", Timeout: TimeSpan.FromSeconds(5));
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[Fact]
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public void The_authored_port_is_appended_to_the_gateway()
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{
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Params("10.100.0.35", 44900).LibplctagGateway.ShouldBe("10.100.0.35:44900");
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}
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[Fact]
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public void The_default_port_is_still_written_explicitly()
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{
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Params("plc1.plant.local", 44818).LibplctagGateway.ShouldBe("plc1.plant.local:44818");
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}
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[Theory]
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[InlineData(0)]
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[InlineData(-1)]
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public void A_missing_port_falls_back_to_the_bare_host(int port)
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{
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Params("10.100.0.35", port).LibplctagGateway.ShouldBe("10.100.0.35");
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}
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// Gitea #539 — #534 fixed the data path but both DISCOVERY call sites kept passing the bare
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// Gateway, so "Browse controller" against a device authored on a non-default port silently
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// browsed whatever answers on 44818. These pin the composed gateway at the actual libplctag
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// Tag construction seam, which the property-only tests above structurally cannot: they proved
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// LibplctagGateway composes correctly while nothing proved each Tag builder consumes it.
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[Fact]
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public void The_symbol_list_browse_tag_carries_the_authored_port()
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{
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using var tag = LibplctagListingReader.BuildSymbolListTag(Params("10.100.0.35", 44999));
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tag.Gateway.ShouldBe("10.100.0.35:44999");
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tag.Name.ShouldBe("@tags");
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}
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[Fact]
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public void The_template_read_tag_carries_the_authored_port()
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{
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using var tag = LibplctagTemplateReader.BuildTemplateTag(Params("10.100.0.35", 44999), templateInstanceId: 0x123);
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tag.Gateway.ShouldBe("10.100.0.35:44999");
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tag.Name.ShouldBe("@udt/291");
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}
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}
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