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test(fixtures): migrate integration-test fixture defaults to 10.100.0.35

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CLAUDE.md "Docker Workflow" claims (per the 2026-04-28 migration note)
that all fixture-class default endpoints were rewritten to target the
shared Docker host at 10.100.0.35. Audit during today's e2e run showed
the claim was incomplete — five fixture classes still defaulted to
localhost / 127.0.0.1, causing every fixture-touching integration test
to skip with "endpoint unreachable" on a fresh box that hadn't set
the override env vars.

Files corrected:

  - tests/.../Modbus.IntegrationTests/ModbusSimulatorFixture.cs
      DefaultEndpoint: localhost:5020 → 10.100.0.35:5020
  - tests/.../S7.IntegrationTests/Snap7ServerFixture.cs
      DefaultEndpoint: localhost:1102 → 10.100.0.35:1102
  - tests/.../OpcUaClient.IntegrationTests/OpcPlcFixture.cs
      DefaultEndpoint: opc.tcp://localhost:50000 → opc.tcp://10.100.0.35:50000
  - tests/.../AbCip.IntegrationTests/AbServerFixture.cs
      Host default + ResolveHost fallback: 127.0.0.1 → 10.100.0.35
  - tests/.../AbLegacy.IntegrationTests/AbLegacyServerFixture.cs
      Host default + ResolveEndpoint fallback: 127.0.0.1 → 10.100.0.35

XML doc comments referencing the old localhost defaults were updated in
the same pass so the class-summary documentation matches the actual
default. The override-via-env-var mechanism (MODBUS_SIM_ENDPOINT,
AB_SERVER_ENDPOINT, AB_LEGACY_ENDPOINT, S7_SIM_ENDPOINT,
OPCUA_SIM_ENDPOINT) is unchanged — pointing at a real PLC or a
locally-running container still works exactly as before.

Verification:
  - Solution-wide dotnet build: 0 errors.
  - S7.IntegrationTests: 3/3 pass without env-var override.
  - OpcUaClient.IntegrationTests: 3/3 pass without env-var override.
  - Modbus.IntegrationTests: 4/38 (same as the env-var-override run —
    the 2 failures + 32 skips are pre-existing fixture-profile
    mismatches unrelated to this fix).
  - AbCip.IntegrationTests / AbLegacy.IntegrationTests: same results
    as the env-var-override run.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-05-23 19:32:23 -04:00
parent 3d982d9a65
commit 49644fc7fd
5 changed files with 29 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.IntegrationTests/OpcPlcFixture.cs
View File

@@ -6,7 +6,7 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.IntegrationTests;
/// Reachability probe for an <c>opc-plc</c> simulator (Microsoft Industrial IoT's
/// OPC UA PLC from <c>mcr.microsoft.com/iotedge/opc-plc</c>) or any real OPC UA
/// server the <c>OPCUA_SIM_ENDPOINT</c> env var points at. Parses
/// <c>OPCUA_SIM_ENDPOINT</c> (default <c>opc.tcp://localhost:50000</c>),
/// <c>OPCUA_SIM_ENDPOINT</c> (default <c>opc.tcp://10.100.0.35:50000</c> — the shared Docker host),
/// TCP-connects to the resolved host:port at collection init, and records a
/// <see cref="SkipReason"/> on failure. Tests call <c>Assert.Skip</c> on that, so
/// `dotnet test` stays green when Docker isn't running the simulator — mirrors the
@@ -32,7 +32,11 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.IntegrationTests;
/// </remarks>
public sealed class OpcPlcFixture : IAsyncDisposable
{
private const string DefaultEndpoint = "opc.tcp://localhost:50000";
// 10.100.0.35 = the shared Docker host (see CLAUDE.md "Docker Workflow"). Migrated
// off this VM's localhost on 2026-04-28 alongside the rest of the Docker-host move.
// Override via OPCUA_SIM_ENDPOINT to point at a different host or a locally-running
// opc-plc instance.
private const string DefaultEndpoint = "opc.tcp://10.100.0.35:50000";
private const string EndpointEnvVar = "OPCUA_SIM_ENDPOINT";
/// <summary>Full <c>opc.tcp://host:port</c> URL the driver session should connect to.</summary>