litellm/tests/claude_code/__init__.py
mateo-berri 0bf013f620 RALPH: tracer-bullet for Claude Code compatibility matrix (#26477, PRD #26476)
Slice 1 of the Claude Code Compatibility Matrix: the thinnest end-to-end
path through every layer for a single (feature, provider) cell, so a
future docs page can render a real green cell sourced from a real test.

What landed in this repo:

- tests/claude_code/manifest.yaml — feature manifest with one entry
  (basic_messaging_non_streaming) plus the v0 provider column order.
- tests/claude_code/cli_driver.py — Claude Code CLI Driver. One entry
  point (run_claude); handles subprocess assembly, env overlay, stream-JSON
  parsing, and structured failure modes. `runner=` is a unit-test seam.
- tests/claude_code/conftest.py — `compat_result` fixture (tagged-union
  recorder) + pytest_runtest_makereport hook that infers (feature, provider)
  from the file path and writes a structured compat-results.json artifact.
- tests/claude_code/basic_messaging_non_streaming/test_anthropic.py — the
  one cell, parametrized over Haiku/Sonnet/Opus per the PRD's per-cell
  model rule.
- tests/claude_code/matrix_builder.py — pure-function builder from
  (manifest, results, run-metadata) to the v1 JSON schema. Aggregates per-
  model results into one cell (pass iff all pass). build_from_paths is the
  thin I/O wrapper for the publisher.
- tests/claude_code/sample_compatibility-matrix.json — hand-authored sample
  of the v1 JSON; copied to the docs repo by hand as part of this slice.
- Unit tests: 10 driver tests (mocked subprocess), 9 compat_result tests,
  10 matrix-builder golden-file tests. 29/29 pass.

Key decisions:

- (feature, provider) is inferred from file path, not declared in metadata —
  mirrors the PRD's "no drift" goal.
- Driver injects subprocess via a `runner` kwarg so unit tests don't need
  the real `claude` CLI; production callers leave it default.
- Builder is a pure function on Mappings/Sequences; load/write live in a
  thin `build_from_paths` wrapper. Golden-file tests pin the schema.
- `_driver_unit_tests/` and `_builder_unit_tests/` are prefixed with `_`
  so the conftest's path-inference hook skips them and they don't
  pollute the matrix artifact.
- `compat-results.json` added to .gitignore (CI-only output).

Out of scope per CLAUDE.md (docs live in BerriAI/litellm-docs):
- The MDX page `docs/tutorials/claude-code-compatibility` and the
  `<CompatibilityMatrix />` React component. The hand-authored
  compatibility-matrix.json (`sample_compatibility-matrix.json` in this
  repo) is the artifact those docs files will consume; opening that doc
  PR is the next step in this slice.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-25 04:07:02 +00:00

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