Close the notable gaps in scripts/run-client-e2e-tests.ps1:
- Write round-trip: write a per-client sentinel value to a configurable
writable attribute, then assert it is echoed back through the event
stream. Extends the Rust mxgw-cli stream-events output with full
per-event JSON (itemHandle + protojson-shaped value) so all five
language clients run an identical value compare.
- Parity: assert an invalid item handle and an unknown session id are
rejected rather than silently succeeding.
- Auth rejection: assert open-session is rejected with a missing API key
and, when -RejectScopeApiKeyEnv is supplied, with an insufficient-scope
key.
- Parallel: -Parallel runs each language client as an isolated child
process and merges their JSON reports.
Update docs/GatewayTesting.md for the new phases and flags.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty