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Phase 3 PR 32 — Multi-driver integration test #31

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dohertj2 merged 1 commits from phase-3-pr32-multi-driver-integration into v2 2026-04-18 15:34:17 -04:00
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Joseph Doherty
2f00c74bbb Phase 3 PR 32 — Multi-driver integration test. Closes LMX follow-up #6 with Server.Tests/MultipleDriverInstancesIntegrationTests.cs: registers two StubDriver instances (alpha + beta) with distinct DriverInstanceIds on one DriverHost, boots the full OpcUaApplicationHost, and exercises three behaviors end-to-end via a real OPC UA client session. (1) Each driver's namespace URI resolves to a distinct index in the client's NamespaceUris (alpha → urn:OtOpcUa:alpha, beta → urn:OtOpcUa:beta) — proves DriverNodeManager's namespaceUris-per-driver base-ctor wiring actually lands two separate INodeManager registrations. (2) Browsing one subtree returns only that driver's folder; the other driver's folder does NOT leak into the wrong subtree. This is the test that catches a cross-driver routing regression the v1 single-driver code path couldn't surface — if a future refactor flattens both drivers into a shared namespace, the 'shouldNotContain' assertion fails cleanly. (3) Reads route to the owning driver by namespace — alpha's ReadAsync returns 42 while beta's returns 99; a misroute would surface as 99 showing up on an alpha node id or vice versa. StubDriver is parameterized on (DriverInstanceId, folderName, readValue) so the same class constructs both instances without copy-paste. 
No production code changes — pure additive test. Server.Tests Integration: 3 new tests pass; existing OpcUaServerIntegrationTests stays green (single-driver case still exercised there). Full Server.Tests Unit still 43 / 0. Deferred: multi-driver alarm-event case (two drivers each raising a GalaxyAlarmEvent, assert each condition lands on its owning instance's condition node) — needs a stub IAlarmSource and is worth its own focused PR.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-04-18 15:29:49 -04:00