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Title: [v1.x] tests: backport interaction-model suite from main (527 tests, src/ untouched) by maxisbey · Pull Request #2717 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: [v1.x] tests: backport interaction-model suite from main (527 tests, src/ untouched) by maxisbey · Pull Request #2717 · modelcontextprotocol/python-sdk

X Title: [v1.x] tests: backport interaction-model suite from main (527 tests, src/ untouched) by maxisbey · Pull Request #2717 · modelcontextprotocol/python-sdk

Description: Backports tests/interaction/ (the end-to-end interaction-model suite from #2691) to v1.x, rewritten against the v1 public API. The result is a parity baseline: once main adds backwards-compatibility shims, this suite can be copied over verbatim and the diff between "v1 suite on v1" and "v1 suite on v2-with-shims" is the shim gap. Where to look tests/interaction/README.md — conventions, manifest model, transport matrix (unchanged from main). tests/interaction/_requirements.py — same 362-entry manifest; behavior text is SDK-neutral so it carries over. The divergence/deferred data is updated where v1 behaves differently. tests/interaction/_connect.py — the connection harness, rewritten for v1: factories yield ClientSession directly (v1 has no high-level Client), and mounted_app/build_streamable_http_app hand-assemble the Starlette app from StreamableHTTPSessionManager + auth routes (v1's lowlevel Server has no streamable_http_app() builder). tests/interaction/auth/_provider.py — unchanged from main; v1's OAuthAuthorizationServerProvider Protocol is identical. src/ — untouched (git diff v1.x -- src/ is empty). What's covered 527 tests (same coverage as the 529 on main minus the deferrals below). Every transport-agnostic test runs over {in-memory, streamable HTTP, SSE} via the connect fixture; transport-specific tests, hosting/resumability/session management, and the full OAuth flow are exercised the same as on main. The suite deliberately spreads server→client session-access across v1's several public idioms (server.request_context, the request_ctx contextvar, FastMCP's Context param, ctx.request_context, mcp.get_context()) so each path is exercised. Deferred — not expressible via the v1 public API (3) Requirement Why resources:templates:pagination v1's @server.list_resource_templates() only accepts a nullary handler; the inbound cursor cannot be read transport:streamable-http:stateless-restrictions v1 stateless mode has no guard on server-initiated requests; the only observable outcome is a hang client-auth:authorize:offline-access-consent v1's OAuthClientProvider predates SEP-2207 (no offline_access/prompt handling) How Has This Been Tested? uv run --frozen pytest tests/interaction/ -n 0 — 527 passed in ~5 s. Coverage and strict-no-cover are intentionally not enforced for this suite on v1.x. Breaking Changes None — tests-only. pyproject.toml adds [tool.inline-snapshot] (matching main) and excludes tests/interaction/ from pyright strict mode. Types of changes Test/infrastructure addition Checklist I have read the MCP Documentation My code follows the repository's style guidelines New and existing tests pass locally I have added or updated documentation as needed (tests/interaction/README.md) AI Disclaimer

Open Graph Description: Backports tests/interaction/ (the end-to-end interaction-model suite from #2691) to v1.x, rewritten against the v1 public API. The result is a parity baseline: once main adds backwards-compatibilit...

X Description: Backports tests/interaction/ (the end-to-end interaction-model suite from #2691) to v1.x, rewritten against the v1 public API. The result is a parity baseline: once main adds backwards-compatibilit...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2717

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