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Kenneth Wong
2b780ceae3
Claude Code resolves ANTHROPIC_DEFAULT_FABLE_MODEL through a resolver that strips the [1m] suffix before use, unlike the opus/sonnet resolvers which pass their env value through untouched. The stripped value is then treated as an env-supplied default and held to the standard 200k window instead of the model's native 1M, so writing [1m] into that key costs the long context window rather than granting it. Measured against a Claude Code 2.1.259 session (`/context` on a live proxy endpoint): ANTHROPIC_MODEL=claude-fable-5-1[1m] -> 1m window ANTHROPIC_MODEL=claude-fable-5-1 -> 200k window ANTHROPIC_DEFAULT_FABLE_MODEL=claude-fable-5-1[1m] -> 200k window The fix is key-scoped rather than model-scoped, since the suffix is what grants 1M on every other key. Adds envKeyAcceptsExtendedContextSuffix() as the single place recording which keys reject the suffix, enforces it as a floor inside applyExtendedContextPreferenceToAnthropicModels() so no caller can bypass it, and strips a previously saved suffix from that key on the next launch through the auto path. Also extends the preference to CLAUDE_CODE_SUBAGENT_MODEL. Subagent windows come from the same resolver as the main loop (the Explore inheritCap bounds the model tier, not the context window), so a bare subagent model id sits at 200k while the suffixed form gets 1M. The new key list is kept separate from ANTHROPIC_MODEL_ENV_KEYS, which also drives routing, model-id normalization and profile validation. Claude-Session: https://claude.ai/code/session_01NPkafQjVf4pSwPBwBistGk
CCS Test Suite
Root TypeScript and JavaScript tests run with Bun's test runner. Native shell, PowerShell, Docker, and standalone probes cover contracts that need a real platform or process boundary.
Ownership
| Area | Path | Use for |
|---|---|---|
| Unit | unit/ |
Focused module and command behavior |
| Integration | integration/ |
Cross-module, process, proxy, auth, and web-server behavior |
| End to end | e2e/ |
Packaged CLI workflows |
| npm package | npm/ |
Installation, exports, and package behavior |
| Native | native/ |
Unix and Windows shell behavior |
| Docker | docker/ |
Compose and stable network/service contracts |
| Documentation | docs/ |
Repository documentation invariants |
| Shared support | shared/ |
Fixtures and helpers reused by suites |
| Mocks | mocks/ |
Bounded test doubles and fixtures |
Some source domains also keep focused tests in src/**/__tests__/. Follow the
nearest established pattern and avoid moving tests solely for taxonomy.
Commands
Commands are defined in ../package.json. Bucket membership
and execution live in
../scripts/run-test-bucket.js.
bun run test:fast # Fast Bun test bucket
bun run test:slow # Slow Bun test bucket
bun run test:all # All root non-e2e Bun test buckets
bun run test:unit # tests/unit
bun run test:npm # tests/npm
bun run test:native # Native Unix edge-case script
bun run test:e2e # tests/e2e with fail-fast and extended timeout
bun run test # Build, then test:all
For the normal contributor gate:
bun run format
bun run lint:fix
bun run validate
For the closest local equivalent to PR CI:
bun run validate:ci-parity
Dashboard tests use Vitest and are documented in
../ui/README.md.
Test Isolation
- Set
CCS_HOMEto a temporary directory. - Never read or modify a contributor's real
~/.ccs/or~/.claude/. - Use
getCcsDir()from../src/utils/config-manager.tsfor CCS paths. - Keep fixtures deterministic and free of credentials or private account data.
- Use real behavior at the boundary under test; do not weaken assertions to hide regressions.
Adding Coverage
- Add a focused unit test for isolated logic.
- Add integration coverage when behavior crosses modules, processes, HTTP, or persistence boundaries.
- Add e2e coverage when command routing or packaged CLI behavior is the contract.
- Add native or Docker coverage only when platform/runtime behavior cannot be represented faithfully in Bun tests.
- Run the smallest relevant command first, then broaden to the contributor or CI-parity gate when shared contracts changed.