Crate oa_gateway_testing

Shared fixtures and test scaffolding.

This is not a runtime crate. Adapter crates must not depend on the harness feature — that would cycle (oa-gateway-testing → adapter → oa-gateway-testing). Unit tests stay in each crate; anything that crosses the engine lives here.

harness is on by default and pulls OWP, STOMP, DDS, and loopback. fixtures is always available. oa-gateway-uci depends with default-features = false so it can compile against the sample payloads without taking the adapters.

Modules

• dds
  Starts the DDS adapter for in-process tests.
• fixtures
  Sample payloads. Paths stay valid when crates move; do not include_str! from the workspace root.
• owp
  In-process OWP server and a WebSocket client for it.
• stomp
  Mini STOMP broker, a peer client, and an adapter starter.
• tls
  Self-signed certificates for TLS tests.
• util
  Timeouts and markers for cross-adapter tests.