Joseph Doherty 44177acf64 Add integration test harness: OpcUaServiceBuilder + OpcUaServerFixture ...

OpcUaServiceBuilder provides fluent API for constructing OpcUaService
with dependency overrides (IMxProxy, IGalaxyRepository, IMxAccessClient).
WithMxAccessClient skips the STA thread and COM interop entirely.

OpcUaServerFixture wraps the service lifecycle with automatic port
allocation (atomic counter starting at 16000), guaranteed cleanup via
IAsyncLifetime, and factory methods for common test scenarios:
- WithFakes() — FakeMxProxy + FakeGalaxyRepository with standard data
- WithFakeMxAccessClient() — bypasses COM, fastest for most tests

Also adds TestData helper with reusable hierarchy/attributes matching
gr/layout.md, and 5 fixture tests verifying startup, shutdown, port
isolation, and address space building.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-25 06:22:31 -04:00

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