Joseph Doherty
50 lines
2.3 KiB
C#
50 lines
2.3 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Commons.Protos;
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using ZB.MOM.WW.OtOpcUa.Commons.Protos.MeshTransport.V1;
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namespace ZB.MOM.WW.OtOpcUa.Commons.Tests;
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/// <summary>
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/// Contract-lock for the ClusterClient→gRPC command envelope's oneof. If a fifth command is added
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/// to <c>mesh_transport.proto</c> without adding a matching entry to
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/// <see cref="MeshTransportProtoContract.HandledCases"/>, this test goes red — the single guard
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/// that keeps the wire contract and the handled-case set from silently drifting apart. A drift
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/// here is exactly the failure the whole transport exists to avoid: a command that crosses the
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/// mesh boundary, decodes to a case nobody handles, and is dropped without a trace.
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/// </summary>
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public class MeshTransportProtoContractTests
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{
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[Fact]
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public void EveryOneofVariant_IsAccountedFor()
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{
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var variants = System.Enum.GetValues<CommandEnvelope.CommandOneofCase>()
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.Where(c => c != CommandEnvelope.CommandOneofCase.None).ToArray();
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variants.ShouldBe(MeshTransportProtoContract.HandledCases, ignoreOrder: true);
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}
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[Fact]
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public void The_service_base_and_client_types_generate()
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{
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// Referencing these types is the whole assertion — GrpcServices="Both" must emit both halves
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// of both services: central hosts CentralCommandService and dials NodeCommandService, and a
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// driver node does the mirror image, so neither service can ship client-only or server-only.
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typeof(NodeCommandService.NodeCommandServiceBase).ShouldNotBeNull();
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typeof(NodeCommandService.NodeCommandServiceClient).ShouldNotBeNull();
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typeof(CentralCommandService.CentralCommandServiceBase).ShouldNotBeNull();
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typeof(CentralCommandService.CentralCommandServiceClient).ShouldNotBeNull();
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}
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[Fact]
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public void The_apply_outcome_enum_reserves_zero_as_unspecified()
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{
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// proto3 decodes an absent enum field as 0. If 0 meant "Applied", a message that lost the
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// field in transit — or was written by a peer that predates it — would report a deployment
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// as successfully applied when nothing was said at all. 0 must stay meaningless.
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((int)ApplyOutcome.Unspecified).ShouldBe(0);
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((int)ApplyOutcome.Applied).ShouldNotBe(0);
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((int)ApplyOutcome.Failed).ShouldNotBe(0);
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}
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}
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