Feat/test coverage config idempotency gateway dispute - #1232
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Add config.validation.spec.ts covering missing required keys and out-of-range/malformed values. Add .positive() to port fields (APP_PORT, DATABASE_PORT, REDIS_PORT, MAIL_PORT) and rate-limit fields (THROTTLE_TTL, THROTTLE_LIMIT) to reject negative numbers. 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
Add idempotency.interceptor.spec.ts covering: - Basic pass-through and replay for duplicate keys - ConflictException for same key with different request body - TTL expiry (stale cached responses not replayed) - Concurrent duplicate request deduplication via ReplaySubject Upgrade interceptor to use ReplaySubject for concurrent deduplication, add configurable TTL for cache entries, and clean up stale entries on reuse. 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
Add documents.gateway.spec.ts covering: - Reject unauthenticated connections (no token) with error + disconnect - Reject invalid JWT tokens with descriptive error - Accept valid tokens and join user-scoped room - Status events emitted to document-specific rooms, not broadcast globally - Subscribe access control: owner-only, admin bypass, missing document rejection 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
Add dispute-reason-classifier.service.spec.ts covering: - Each classification category with representative input text - Case-insensitive matching - First-match priority when multiple reasons match - Fallback/unclassified case returns null - Empty description and empty reasons table edge cases 🤖 Generated with Codebuff Co-Authored-By: Codebuff <noreply@codebuff.com>
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Summary
Adds comprehensive test coverage for four previously untested areas of the backend, plus a small schema hardening fix.
Task 1 — Config Validation Tests
Added config.validation.spec.ts (33 tests) covering every required key's missing case, out-of-range values (negative ports/limits), invalid URIs, short JWT secrets, invalid NODE_ENV, and placeholder-rejection in production.
Added .positive() to APP_PORT, DATABASE_PORT, REDIS_PORT, MAIL_PORT, THROTTLE_TTL, and THROTTLE_LIMIT in the Joi schema to reject negative numbers at startup.
Closes [BE-157] config.validation.ts: no test that invalid environment fails startup #1122
Task 2 — Idempotency Interceptor Tests & Hardening
Added idempotency.interceptor.spec.ts (7 tests) covering pass-through, cache replay, TTL expiry, ConflictException on body mismatch, and concurrent deduplication.
Rewrote the interceptor to use ReplaySubject for concurrent request deduplication (fixes a race condition where the in-flight map was re-populated after a synchronous observable completed).
Added configurable TTL (default 24h) with automatic stale-entry expiration on reuse.
Closes [BE-158] IdempotencyInterceptor: expiry and concurrent-duplicate-request handling untested #1123
Task 3 — Documents Gateway Tests
Added documents.gateway.spec.ts (12 tests) covering JWT verification (reject no token, reject invalid token, accept valid token), room-scoped event emission, and subscribe access control (owner-only, admin bypass, missing document).
Closes [BE-159] DocumentsGateway: no authentication check on WebSocket connection #1124
Task 4 — Dispute Reason Classifier Tests
Added dispute-reason-classifier.service.spec.ts (12 tests) covering each classification category, case-insensitive matching, first-match priority, fallback/unclassified case, empty description, and empty reasons table.
Closes [BE-160] DisputeReasonClassifierService is wired but untested #1125