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fix: resolve issues #543, #544, #545, #557 (#558)

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* docs: add investigation reports for 5 open GitHub issues

Comprehensive analysis of issues #543, #544, #545, #555, and #557:

- #557: settings.json not generated, module loader error (node/bun mismatch)
- #555: Windows hooks not executing, hasIpc always false
- #545: formatTool crashes on non-JSON tool_input strings
- #544: mem-search skill hint shown incorrectly to Claude Code users
- #543: /claude-mem slash command unavailable despite installation

Each report includes root cause analysis, affected files, and proposed fixes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(logger): handle non-JSON tool_input in formatTool (#545)

Wrap JSON.parse in try-catch to handle raw string inputs (e.g., Bash
commands) that aren't valid JSON. Falls back to using the string as-is.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(context): update mem-search hint to reference MCP tools (#544)

Update hint messages to reference MCP tools (search, get_observations)
instead of the deprecated "mem-search skill" terminology.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(settings): auto-create settings.json on first load (#557, #543)

When settings.json doesn't exist, create it with defaults instead of
returning in-memory defaults. Creates parent directory if needed.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(hooks): use bun runtime for hooks except smart-install (#557)

Change hook commands from node to bun since hooks use bun:sqlite.
Keep smart-install.js on node since it bootstraps bun installation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* chore: rebuild plugin scripts

* docs: clarify that build artifacts must be committed

* fix(docs): update build artifacts directory reference in CLAUDE.md

* test: add test coverage for PR #558 fixes

- Fix 2 failing tests: update "mem-search skill" → "MCP tools" expectations
- Add 56 tests for formatTool() JSON.parse crash fix (Issue #545)
- Add 27 tests for settings.json auto-creation (Issue #543)

Test coverage includes:
- formatTool: JSON parsing, raw strings, objects, null/undefined, all tool types
- Settings: file creation, directory creation, schema migration, edge cases

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(tests): clean up flaky tests and fix circular dependency

Phase 1 of test quality improvements:

- Delete 6 harmful/worthless test files that used problematic mock.module()
  patterns or tested implementation details rather than behavior:
  - context-builder.test.ts (tested internal implementation)
  - export-types.test.ts (fragile mock patterns)
  - smart-install.test.ts (shell script testing antipattern)
  - session_id_refactor.test.ts (outdated, tested refactoring itself)
  - validate_sql_update.test.ts (one-time migration validation)
  - observation-broadcaster.test.ts (excessive mocking)

- Fix circular dependency between logger.ts and SettingsDefaultsManager.ts
  by using late binding pattern - logger now lazily loads settings

- Refactor mock.module() to spyOn() in several test files for more
  maintainable and less brittle tests:
  - observation-compiler.test.ts
  - gemini_agent.test.ts
  - error-handler.test.ts
  - server.test.ts
  - response-processor.test.ts

All 649 tests pass.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor(tests): phase 2 - reduce mock-heavy tests and improve focus

- Remove mock-heavy query tests from observation-compiler.test.ts, keep real buildTimeline tests
- Convert session_id_usage_validation.test.ts from 477 to 178 lines of focused smoke tests
- Remove tests for language built-ins from worker-spawn.test.ts (JSON.parse, array indexing)
- Rename logger-coverage.test.ts to logger-usage-standards.test.ts for clarity

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* docs(tests): phase 3 - add JSDoc mock justification to test files

Document mock usage rationale in 5 test files to improve maintainability:
- error-handler.test.ts: Express req/res mocks, logger spies (~11%)
- fallback-error-handler.test.ts: Zero mocks, pure function tests
- session-cleanup-helper.test.ts: Session fixtures, worker mocks (~19%)
- hook-constants.test.ts: process.platform mock for Windows tests (~12%)
- session_store.test.ts: Zero mocks, real SQLite :memory: database

Part of ongoing effort to document mock justifications per TESTING.md guidelines.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* test(integration): phase 5 - add 72 tests for critical coverage gaps

Add comprehensive test coverage for previously untested areas:

- tests/integration/hook-execution-e2e.test.ts (10 tests)
  Tests lifecycle hooks execution flow and context propagation

- tests/integration/worker-api-endpoints.test.ts (19 tests)
  Tests all worker service HTTP endpoints without heavy mocking

- tests/integration/chroma-vector-sync.test.ts (16 tests)
  Tests vector embedding synchronization with ChromaDB

- tests/utils/tag-stripping.test.ts (27 tests)
  Tests privacy tag stripping utilities for both <private> and
  <meta-observation> tags

All tests use real implementations where feasible, following the
project's testing philosophy of preferring integration-style tests
over unit tests with extensive mocking.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* context update

* docs: add comment linking DEFAULT_DATA_DIR locations

Added NOTE comment in logger.ts pointing to the canonical DEFAULT_DATA_DIR
in SettingsDefaultsManager.ts. This addresses PR reviewer feedback about
the fragility of having the default defined in two places to avoid
circular dependencies.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Alex Newman
2026-01-05 19:45:09 -05:00
committed by GitHub
parent f1ccc22593
commit f38b5b85bc
55 changed files with 4712 additions and 2676 deletions
Download Patch File Download Diff File Expand all files Collapse all files
.claude/plans/2026-01-05-fix-81-test-failures.md
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# Plan: Fix 81 Test Failures from Incomplete Logger Mocks
## Problem Summary
**Root Cause**: NOT circular dependency (which is handled gracefully), but **incomplete logger mocks** that pollute across test files when Bun runs tests in alphabetical order.
When `tests/context/` runs before `tests/utils/`, the incomplete mocks replace the real logger module globally, causing subsequent tests to fail with `TypeError: logger.formatTool is not a function`.
## Phase 0: Documentation Discovery (COMPLETED)
### Sources Consulted
- `src/utils/logger.ts` - Full logger interface (lines 136, 289-373)
- `tests/context/context-builder.test.ts` - Mock pattern (lines 22-29)
- `tests/context/observation-compiler.test.ts` - Mock pattern (lines 4-10)
- `tests/server/server.test.ts` - Mock pattern (lines 4-11)
- `tests/server/error-handler.test.ts` - Mock pattern (lines 5-12)
- `tests/worker/agents/response-processor.test.ts` - Mock pattern (lines 32-39)
### Logger Methods (Complete List)
All 11 methods that must be in any logger mock:
1. `formatTool(toolName: string, toolInput?: any): string` (line 136)
2. `debug(component, message, context?, data?): void` (line 289)
3. `info(component, message, context?, data?): void` (line 293)
4. `warn(component, message, context?, data?): void` (line 297)
5. `error(component, message, context?, data?): void` (line 301)
6. `dataIn(component, message, context?, data?): void` (line 308)
7. `dataOut(component, message, context?, data?): void` (line 315)
8. `success(component, message, context?, data?): void` (line 322)
9. `failure(component, message, context?, data?): void` (line 329)
10. `timing(component, message, durationMs, context?): void` (line 336)
11. `happyPathError<T>(message, context?): T` (line 362)
### Files Requiring Updates
1. `tests/context/observation-compiler.test.ts` (lines 4-10)
2. `tests/context/context-builder.test.ts` (lines 22-29)
3. `tests/server/server.test.ts` (lines 4-11)
4. `tests/server/error-handler.test.ts` (lines 5-12)
5. `tests/worker/agents/response-processor.test.ts` (lines 32-39)
---
## Phase 1: Create Shared Logger Mock Utility
### Objective
Create a reusable complete logger mock to avoid duplication and ensure consistency.
### Implementation
**Create new file**: `tests/test-utils/mock-logger.ts`
```typescript
/**
* Complete logger mock for tests.
* Includes ALL logger methods to prevent mock pollution across test files.
*/
import { mock } from 'bun:test';
export function createMockLogger() {
return {
logger: {
// Core logging methods
debug: mock(() => {}),
info: mock(() => {}),
warn: mock(() => {}),
error: mock(() => {}),
// Data flow logging
dataIn: mock(() => {}),
dataOut: mock(() => {}),
// Status logging
success: mock(() => {}),
failure: mock(() => {}),
// Performance logging
timing: mock(() => {}),
// Tool formatting - returns string
formatTool: mock((toolName: string, _toolInput?: any) => toolName),
// Error helper - returns the message
happyPathError: mock((message: string, _context?: any) => message),
},
};
}
```
### Verification Checklist
- [ ] File created at `tests/test-utils/mock-logger.ts`
- [ ] All 11 logger methods included
- [ ] `formatTool` returns string (not void)
- [ ] `happyPathError` returns the message (not void)
- [ ] File compiles without errors: `bunx tsc --noEmit tests/test-utils/mock-logger.ts`
### Anti-Patterns to Avoid
- ❌ Don't forget `formatTool` - it returns a string, not void
- ❌ Don't forget `happyPathError` - it's generic and returns the message
- ❌ Don't use `() => {}` for methods that return values
---
## Phase 2: Update Affected Test Files
### Objective
Replace incomplete logger mocks with the complete shared mock.
### Files to Update (5 total)
#### 2.1 `tests/context/observation-compiler.test.ts`
**Current (lines 4-10)**:
```typescript
mock.module('../../src/utils/logger.js', () => ({
logger: {
debug: mock(() => {}),
failure: mock(() => {}),
error: mock(() => {}),
},
}));
```
**Replace with**:
```typescript
import { createMockLogger } from '../test-utils/mock-logger.js';
mock.module('../../src/utils/logger.js', () => createMockLogger());
```
#### 2.2 `tests/context/context-builder.test.ts`
**Current (lines 22-29)**:
```typescript
mock.module('../../src/utils/logger.js', () => ({
logger: {
debug: mock(() => {}),
failure: mock(() => {}),
error: mock(() => {}),
info: mock(() => {}),
},
}));
```
**Replace with**:
```typescript
import { createMockLogger } from '../test-utils/mock-logger.js';
mock.module('../../src/utils/logger.js', () => createMockLogger());
```
#### 2.3 `tests/server/server.test.ts`
**Current (lines 4-11)**:
```typescript
mock.module('../../src/utils/logger.js', () => ({
logger: {
info: () => {},
debug: () => {},
warn: () => {},
error: () => {},
},
}));
```
**Replace with**:
```typescript
import { createMockLogger } from '../test-utils/mock-logger.js';
mock.module('../../src/utils/logger.js', () => createMockLogger());
```
#### 2.4 `tests/server/error-handler.test.ts`
**Current (lines 5-12)**:
```typescript
mock.module('../../src/utils/logger.js', () => ({
logger: {
info: () => {},
debug: () => {},
warn: () => {},
error: () => {},
},
}));
```
**Replace with**:
```typescript
import { createMockLogger } from '../test-utils/mock-logger.js';
mock.module('../../src/utils/logger.js', () => createMockLogger());
```
#### 2.5 `tests/worker/agents/response-processor.test.ts`
**Current (lines 32-39)**:
```typescript
mock.module('../../../src/utils/logger.js', () => ({
logger: {
info: () => {},
debug: () => {},
warn: () => {},
error: () => {},
},
}));
```
**Replace with**:
```typescript
import { createMockLogger } from '../../test-utils/mock-logger.js';
mock.module('../../../src/utils/logger.js', () => createMockLogger());
```
### Verification Checklist
- [ ] All 5 files updated with import statement
- [ ] All 5 files use `createMockLogger()` instead of inline mock
- [ ] Import paths are correct (relative to each file's location)
- [ ] Each file still has `mock.module` BEFORE the module imports it mocks
### Anti-Patterns to Avoid
- ❌ Don't place import AFTER the mock.module call
- ❌ Don't use wrong relative path (../test-utils vs ../../test-utils)
- ❌ Don't forget the .js extension in imports
---
## Phase 3: Verification
### Objective
Confirm all 81 failures are fixed.
### Test Commands
```bash
# 1. Run individual test groups first
bun test tests/context/
bun test tests/server/
bun test tests/utils/
bun test tests/shared/
bun test tests/worker/
# 2. Run full suite
bun test
# 3. Verify specific test counts
# Expected: 733+ tests pass (was 652 before)
```
### Verification Checklist
- [ ] `bun test tests/context/` - all pass
- [ ] `bun test tests/server/` - all pass
- [ ] `bun test tests/utils/` - all pass (including 56 formatTool tests)
- [ ] `bun test tests/shared/` - all pass (including 27 settings tests)
- [ ] `bun test` - 730+ tests pass, 0 failures
- [ ] No `TypeError: logger.formatTool is not a function` errors
### Anti-Pattern Grep Checks
```bash
# Check no incomplete logger mocks remain
grep -r "logger: {" tests/ --include="*.ts" | grep -v mock-logger
# Verify all test files use createMockLogger
grep -r "createMockLogger" tests/ --include="*.ts"
```
---
## Phase 4: Commit
### Commit Message
```
fix(tests): complete logger mocks to prevent cross-test pollution
The 81 test failures were caused by incomplete logger mocks that
polluted the module cache when tests ran in alphabetical order.
Changes:
- Create shared mock-logger.ts with all 11 logger methods
- Update 5 test files to use complete mock
- Fix TypeError: logger.formatTool is not a function
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
```
---
## Summary
| Phase | Files Changed | Purpose |
|-------|--------------|---------|
| 1 | 1 new file | Create shared mock utility |
| 2 | 5 files | Update to use shared mock |
| 3 | 0 files | Verification only |
| 4 | 0 files | Commit |
**Total**: 6 files changed, fixing all 81 test failures.
.claude/reports/CLAUDE.md
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<claude-mem-context>
# Recent Activity
<!-- This section is auto-generated by claude-mem. Edit content outside the tags. -->
*No recent activity*
</claude-mem-context>
.claude/reports/test-audit-2026-01-05.md
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# Test Quality Audit Report
**Date**: 2026-01-05
**Auditor**: Claude Code (Opus 4.5)
**Methodology**: Deep analysis with focus on anti-pattern prevention, actual functionality testing, and regression prevention
---
## Executive Summary
**Total Test Files Audited**: 41
**Total Test Cases**: ~450+
### Score Distribution
| Score | Category | Count | Percentage |
|-------|----------|-------|------------|
| 5 | Essential | 8 | 19.5% |
| 4 | Valuable | 15 | 36.6% |
| 3 | Marginal | 11 | 26.8% |
| 2 | Weak | 5 | 12.2% |
| 1 | Delete | 2 | 4.9% |
### Key Findings
**Strengths**:
- SQLite database tests are exemplary - real database operations with proper setup/teardown
- Infrastructure tests (WMIC parsing, token calculator) use pure unit testing with no mocks
- Search strategy tests have comprehensive coverage of edge cases
- Logger formatTool tests are thorough and test actual transformation logic
**Critical Issues**:
- **context-builder.test.ts** has incomplete mocks that pollute the module cache, causing 81 test failures when run with the full suite
- Several tests verify mock behavior rather than actual functionality
- Type validation tests (export-types.test.ts) provide minimal value - TypeScript already validates types at compile time
- Some "validation" tests only verify code patterns exist, not that they work
**Recommendations**:
1. Fix or delete context-builder.test.ts - it actively harms the test suite
2. Delete trivial type validation tests that duplicate TypeScript compiler checks
3. Convert heavy-mock tests to integration tests where feasible
4. Add integration tests for critical paths (hook execution, worker API endpoints)
---
## Detailed Scores
### Score 5 - Essential (8 tests)
These tests catch real bugs, use minimal mocking, and test actual behavior.
| File | Test Count | Notes |
|------|------------|-------|
| `tests/sqlite/observations.test.ts` | 25+ | Real SQLite operations, in-memory DB, tests actual data persistence and retrieval |
| `tests/sqlite/sessions.test.ts` | 20+ | Real database CRUD operations, status transitions, relationship integrity |
| `tests/sqlite/transactions.test.ts` | 15+ | Critical transaction isolation tests, rollback behavior, error handling |
| `tests/context/token-calculator.test.ts` | 35+ | Pure unit tests, no mocks, tests actual token estimation algorithms |
| `tests/infrastructure/wmic-parsing.test.ts` | 20+ | Pure parsing logic tests, validates Windows process enumeration edge cases |
| `tests/utils/logger-format-tool.test.ts` | 56 | Comprehensive formatTool tests, validates JSON parsing, tool output formatting |
| `tests/server/server.test.ts` | 15+ | Real HTTP server integration tests, actual endpoint validation |
| `tests/cursor-hook-outputs.test.ts` | 12+ | Integration tests running actual hook scripts, validates real output |
**Why Essential**: These tests catch actual bugs before production. They test real behavior with minimal abstraction. The SQLite tests in particular are exemplary - they use an in-memory database but perform real SQL operations.
---
### Score 4 - Valuable (15 tests)
Good tests with acceptable mocking that still verify meaningful behavior.
| File | Test Count | Notes |
|------|------------|-------|
| `tests/sqlite/prompts.test.ts` | 15+ | Real DB operations for user prompts, timestamp handling |
| `tests/sqlite/summaries.test.ts` | 15+ | Real DB operations for session summaries |
| `tests/worker/search/search-orchestrator.test.ts` | 30+ | Comprehensive strategy selection logic, good edge case coverage |
| `tests/worker/search/strategies/sqlite-search-strategy.test.ts` | 25+ | Filter logic tests, date range handling |
| `tests/worker/search/strategies/hybrid-search-strategy.test.ts` | 20+ | Ranking preservation, merge logic |
| `tests/worker/search/strategies/chroma-search-strategy.test.ts` | 20+ | Vector search behavior, doc_type filtering |
| `tests/worker/search/result-formatter.test.ts` | 15+ | Output formatting validation |
| `tests/gemini_agent.test.ts` | 20+ | Multi-turn conversation flow, rate limiting fallback |
| `tests/infrastructure/health-monitor.test.ts` | 15+ | Health check logic, threshold validation |
| `tests/infrastructure/graceful-shutdown.test.ts` | 15+ | Shutdown sequence, timeout handling |
| `tests/infrastructure/process-manager.test.ts` | 12+ | Process lifecycle management |
| `tests/cursor-mcp-config.test.ts` | 10+ | MCP configuration generation validation |
| `tests/cursor-hooks-json-utils.test.ts` | 8+ | JSON parsing utilities |
| `tests/shared/settings-defaults-manager.test.ts` | 27 | Settings validation, migration logic |
| `tests/context/formatters/markdown-formatter.test.ts` | 15+ | Markdown generation, terminology consistency |
**Why Valuable**: These tests have some mocking but still verify important business logic. The search strategy tests are particularly good at testing the decision-making logic for query routing.
---
### Score 3 - Marginal (11 tests)
Tests with moderate value, often too much mocking or testing obvious behavior.
| File | Test Count | Issues |
|------|------------|--------|
| `tests/worker/agents/observation-broadcaster.test.ts` | 15+ | Heavy mocking of SSE workers, tests mock behavior more than actual broadcasting |
| `tests/worker/agents/fallback-error-handler.test.ts` | 10+ | Error message formatting tests, low complexity |
| `tests/worker/agents/session-cleanup-helper.test.ts` | 10+ | Cleanup logic with mocked dependencies |
| `tests/context/observation-compiler.test.ts` | 20+ | Mock database, tests query building not actual compilation |
| `tests/server/error-handler.test.ts` | 8+ | Mock Express response, tests formatting only |
| `tests/cursor-registry.test.ts` | 8+ | Registry pattern tests, low risk area |
| `tests/cursor-context-update.test.ts` | 5+ | File format validation, could be stricter |
| `tests/hook-constants.test.ts` | 5+ | Constant validation, low value |
| `tests/session_store.test.ts` | 10+ | In-memory store tests, straightforward logic |
| `tests/logger-coverage.test.ts` | 8+ | Coverage verification, not functionality |
| `tests/scripts/smart-install.test.ts` | 25+ | Path array tests, replicates rather than imports logic |
**Why Marginal**: These tests provide some regression protection but either mock too heavily or test low-risk areas. The smart-install tests notably replicate the path arrays from the source file rather than testing the actual module.
---
### Score 2 - Weak (5 tests)
Tests that mostly verify mocks work or provide little value.
| File | Test Count | Issues |
|------|------------|--------|
| `tests/worker/agents/response-processor.test.ts` | 20+ | **Heavy mocking**: >50% setup is mock configuration. Tests verify mocks are called, not that XML parsing actually works |
| `tests/session_id_refactor.test.ts` | 10+ | **Code pattern validation**: Tests that certain patterns exist in code, not that they work |
| `tests/session_id_usage_validation.test.ts` | 5+ | **Static analysis as tests**: Reads files and checks for string patterns. Should be a lint rule, not a test |
| `tests/validate_sql_update.test.ts` | 5+ | **One-time validation**: Validated a migration, no ongoing value |
| `tests/worker-spawn.test.ts` | 5+ | **Trivial mocking**: Tests spawn config exists, doesn't test actual spawning |
**Why Weak**: These tests create false confidence. The response-processor tests in particular set up elaborate mocks and then verify those mocks were called - they don't verify actual XML parsing or database operations work correctly.
---
### Score 1 - Delete (2 tests)
Tests that actively harm the codebase or provide zero value.
| File | Test Count | Issues |
|------|------------|--------|
| `tests/context/context-builder.test.ts` | 20+ | **CRITICAL**: Incomplete logger mock pollutes module cache. Causes 81 test failures when run with full suite. Tests verify mocks, not actual context building |
| `tests/scripts/export-types.test.ts` | 30+ | **Zero runtime value**: Tests TypeScript type definitions compile. TypeScript compiler already does this. These tests can literally never fail at runtime |
**Why Delete**:
- **context-builder.test.ts**: This test is actively harmful. It imports the logger module with an incomplete mock (only 4 of 13+ methods mocked), and this polluted mock persists in Bun's module cache. When other tests run afterwards, they get the broken logger singleton. The test itself only verifies that mocked methods were called with expected arguments - it doesn't test actual context building logic.
- **export-types.test.ts**: These tests instantiate TypeScript interfaces and verify properties exist. TypeScript already validates this at compile time. If a type definition is wrong, the code won't compile. These runtime tests add overhead without catching any bugs that TypeScript wouldn't already catch.
---
## Missing Test Coverage
### Critical Gaps
| Area | Risk | Current Coverage | Recommendation |
|------|------|------------------|----------------|
| **Hook execution E2E** | HIGH | None | Add integration tests that run hooks with real Claude Code SDK |
| **Worker API endpoints** | HIGH | Partial (server.test.ts) | Add tests for all REST endpoints: `/observe`, `/search`, `/health` |
| **Chroma vector sync** | HIGH | None | Add tests for ChromaSync.ts embedding generation and retrieval |
| **Database migrations** | MEDIUM | None | Add tests for schema migrations, especially version upgrades |
| **Settings file I/O** | MEDIUM | Partial | Add tests for settings file creation, corruption recovery |
| **Tag stripping** | MEDIUM | None | Add tests for `<private>` and `<meta-observation>` tag handling |
| **MCP tool handlers** | MEDIUM | None | Add tests for search, timeline, get_observations MCP tools |
| **Error recovery** | MEDIUM | Minimal | Add tests for worker crash recovery, database corruption handling |
### Recommended New Tests
1. **`tests/integration/hook-execution.test.ts`**
- Run actual hooks with mocked Claude Code environment
- Verify data flows correctly through SessionStart -> PostToolUse -> SessionEnd
2. **`tests/integration/worker-api.test.ts`**
- Start actual worker server
- Make real HTTP requests to all endpoints
- Verify response formats and error handling
3. **`tests/services/chroma-sync.test.ts`**
- Test embedding generation with real text
- Test semantic similarity retrieval
- Test sync between SQLite and Chroma
4. **`tests/utils/tag-stripping.test.ts`**
- Test `<private>` tag removal
- Test `<meta-observation>` tag handling
- Test nested tag scenarios
---
## Recommendations
### Immediate Actions
1. **Delete or fix `tests/context/context-builder.test.ts`** (Priority: CRITICAL)
- This test causes 81 other tests to fail due to module cache pollution
- Either complete the logger mock (all 13+ methods) or delete entirely
- Recommended: Delete and rewrite as integration test without mocks
2. **Delete `tests/scripts/export-types.test.ts`** (Priority: HIGH)
- Zero runtime value - TypeScript compiler already validates types
- Remove to reduce test suite noise
3. **Delete or convert validation tests** (Priority: MEDIUM)
- `tests/session_id_refactor.test.ts` - Was useful during migration, no longer needed
- `tests/session_id_usage_validation.test.ts` - Convert to lint rule
- `tests/validate_sql_update.test.ts` - Was useful during migration, no longer needed
### Architecture Improvements
1. **Create test utilities for common mocks**
- Centralize logger mock in `tests/utils/mock-logger.ts` with ALL methods
- Centralize database mock with proper transaction support
- Prevent incomplete mocks from polluting module cache
2. **Add integration test suite**
- Create `tests/integration/` directory
- Run with real worker server (separate database)
- Test actual data flow, not mock interactions
3. **Implement test isolation**
- Use `beforeEach` to reset module state
- Consider test file ordering to prevent cache pollution
- Add cleanup hooks for database state
### Quality Guidelines
For future tests, follow these principles:
1. **Prefer real implementations over mocks**
- Use in-memory SQLite instead of mock database
- Use real HTTP requests instead of mock req/res
- Mock only external services (AI APIs, file system when needed)
2. **Test behavior, not implementation**
- Bad: "verify function X was called with argument Y"
- Good: "verify output contains expected data after operation"
3. **Each test should be able to fail**
- If a test cannot fail (like type validation tests), it's not testing anything
- Write tests that would catch real bugs
4. **Keep test setup minimal**
- If >50% of test is mock setup, consider integration testing
- Complex mock setup often indicates testing the wrong thing
---
## Appendix: Full Test File Inventory
| File | Score | Tests | LOC | Mock % |
|------|-------|-------|-----|--------|
| `tests/context/context-builder.test.ts` | 1 | 20+ | 400+ | 80% |
| `tests/context/formatters/markdown-formatter.test.ts` | 4 | 15+ | 200+ | 10% |
| `tests/context/observation-compiler.test.ts` | 3 | 20+ | 300+ | 60% |
| `tests/context/token-calculator.test.ts` | 5 | 35+ | 400+ | 0% |
| `tests/cursor-context-update.test.ts` | 3 | 5+ | 100+ | 20% |
| `tests/cursor-hook-outputs.test.ts` | 5 | 12+ | 250+ | 10% |
| `tests/cursor-hooks-json-utils.test.ts` | 4 | 8+ | 150+ | 0% |
| `tests/cursor-mcp-config.test.ts` | 4 | 10+ | 200+ | 20% |
| `tests/cursor-registry.test.ts` | 3 | 8+ | 150+ | 30% |
| `tests/gemini_agent.test.ts` | 4 | 20+ | 400+ | 40% |
| `tests/hook-constants.test.ts` | 3 | 5+ | 80+ | 0% |
| `tests/infrastructure/graceful-shutdown.test.ts` | 4 | 15+ | 300+ | 40% |
| `tests/infrastructure/health-monitor.test.ts` | 4 | 15+ | 250+ | 30% |
| `tests/infrastructure/process-manager.test.ts` | 4 | 12+ | 200+ | 35% |
| `tests/infrastructure/wmic-parsing.test.ts` | 5 | 20+ | 240+ | 0% |
| `tests/logger-coverage.test.ts` | 3 | 8+ | 150+ | 20% |
| `tests/scripts/export-types.test.ts` | 1 | 30+ | 350+ | 0% |
| `tests/scripts/smart-install.test.ts` | 3 | 25+ | 230+ | 0% |
| `tests/server/error-handler.test.ts` | 3 | 8+ | 150+ | 50% |
| `tests/server/server.test.ts` | 5 | 15+ | 300+ | 20% |
| `tests/session_id_refactor.test.ts` | 2 | 10+ | 200+ | N/A |
| `tests/session_id_usage_validation.test.ts` | 2 | 5+ | 150+ | N/A |
| `tests/session_store.test.ts` | 3 | 10+ | 180+ | 10% |
| `tests/shared/settings-defaults-manager.test.ts` | 4 | 27 | 400+ | 20% |
| `tests/sqlite/observations.test.ts` | 5 | 25+ | 400+ | 0% |
| `tests/sqlite/prompts.test.ts` | 4 | 15+ | 250+ | 0% |
| `tests/sqlite/sessions.test.ts` | 5 | 20+ | 350+ | 0% |
| `tests/sqlite/summaries.test.ts` | 4 | 15+ | 250+ | 0% |
| `tests/sqlite/transactions.test.ts` | 5 | 15+ | 300+ | 0% |
| `tests/utils/logger-format-tool.test.ts` | 5 | 56 | 1000+ | 0% |
| `tests/validate_sql_update.test.ts` | 2 | 5+ | 100+ | N/A |
| `tests/worker/agents/fallback-error-handler.test.ts` | 3 | 10+ | 200+ | 40% |
| `tests/worker/agents/observation-broadcaster.test.ts` | 3 | 15+ | 350+ | 60% |
| `tests/worker/agents/response-processor.test.ts` | 2 | 20+ | 500+ | 70% |
| `tests/worker/agents/session-cleanup-helper.test.ts` | 3 | 10+ | 200+ | 50% |
| `tests/worker/search/result-formatter.test.ts` | 4 | 15+ | 250+ | 20% |
| `tests/worker/search/search-orchestrator.test.ts` | 4 | 30+ | 500+ | 45% |
| `tests/worker/search/strategies/chroma-search-strategy.test.ts` | 4 | 20+ | 350+ | 50% |
| `tests/worker/search/strategies/hybrid-search-strategy.test.ts` | 4 | 20+ | 300+ | 45% |
| `tests/worker/search/strategies/sqlite-search-strategy.test.ts` | 4 | 25+ | 350+ | 40% |
| `tests/worker-spawn.test.ts` | 2 | 5+ | 100+ | 60% |
---
*Report generated by Claude Code (Opus 4.5) on 2026-01-05*