# BRIEFING — 2026-06-26T17:22:00Z

## Mission
Improve the test coverage of `reversecore_mcp/tools/analysis/capa_tools.py` to at least 75% (currently 35%).

## 🔒 My Identity
- Archetype: implementer/qa/specialist
- Roles: implementer, qa, specialist
- Working directory: /Users/sjkim1127/Reversecore_MCP/.agents/worker_m2_1/
- Original parent: 9450644b-aeb0-4b58-b11a-c66f67fb8114
- Milestone: Worker Milestone 2.1 - Test Coverage Improvement for capa_tools.py

## 🔒 Key Constraints
- Code-only network mode: no external HTTP/HTTPS connections.
- Minimal change principle: only modify the test files/source files as required.
- Do not cheat: no dummy implementations, no hardcoded verification strings/results.
- Must achieve >= 75% test coverage for `reversecore_mcp/tools/analysis/capa_tools.py`.

## Current Parent
- Conversation ID: 9450644b-aeb0-4b58-b11a-c66f67fb8114
- Caller ID: 7276f128-dc31-45f6-aa95-9c5a0b37b541
- Updated: yes, completed

## Task Summary
- **What to build**: Test suite in `tests/unit/tools/analysis/test_capa_tools.py` with comprehensive unit tests for `capa_tools.py` via mocking.
- **Success criteria**: All tests pass cleanly, test coverage is >= 75%, and code conforms to quality guidelines.
- **Interface contracts**: `reversecore_mcp/tools/analysis/capa_tools.py`
- **Code layout**: `tests/unit/tools/analysis/test_capa_tools.py`

## Key Decisions Made
- Used mock `sys.modules` to mock the submodules `capa.loader`, `capa.main`, and `capa.rules` dynamically.
- Explicitly bound `loader`, `main`, and `rules` submodules as attributes on `mock_capa` to prevent python's import caching machinery from failing to lookup attributes on subsequent test invocations.
- Achieved 100% test coverage for `reversecore_mcp/tools/analysis/capa_tools.py`.

## Artifact Index
- `/Users/sjkim1127/Reversecore_MCP/.agents/worker_m2_1/handoff.md` — Final worker report
- `/Users/sjkim1127/Reversecore_MCP/.agents/worker_m2_1/progress.md` — Progress heartbeat

## Change Tracker
- **Files modified**: `tests/unit/tools/analysis/test_capa_tools.py` (added 5 mocked test cases: is_capa_available_true, is_capa_available_false, test_run_capa_success, test_run_capa_rules_load_failed, test_run_capa_file_load_failed, test_run_capa_general_exception)
- **Build status**: pass
- **Pending issues**: none

## Quality Status
- **Build/test result**: 12/12 tests passed successfully.
- **Lint status**: 0 violations (fully compliant with ruff and black formatting)
- **Tests added/modified**: coverage of `reversecore_mcp/tools/analysis/capa_tools.py` increased from 33% to 100%.
