zai-proxy/notes/bf-32n.md

Bead bf-32n: Add bounds enforcement tests

Status

Already complete - The required test TestAdaptiveRateLimiter_BasicBounds already exists and passes all acceptance criteria.

Verification

All acceptance criteria met:

1. ✅ TestAdaptiveRateLimiter_BasicBounds test function exists (line 982)
2. ✅ Table-driven with multiple bound scenarios (4 test cases)
3. ✅ Tests use injected window duration (testWindow = 10ms, no sleep calls)
4. ✅ Tests verify rate stays in [minRate, maxRate] under all conditions
5. ✅ Tests pass: go test ./proxy -v -run TestAdaptiveRateLimiter_BasicBounds

Scope Coverage

All required scenarios covered:

• ✅ Rate never drops below minRate (default: 10)
• ✅ Rate never exceeds maxRate (default: 100)
• ✅ Heavy 429 load drives rate to min but not below
• ✅ Continuous success drives rate to max but not above

Original Implementation

Test was added in commit 88358f9 ("test(ratelimiter): add basic state and bounds tests for AdaptiveRateLimiter") and improved in commit 22644ea to use injected window duration for faster test execution.

Location: proxy/ratelimiter_test.go:982-1066