---
phase: 04-direct-command-mappings
plan: 01
subsystem: cli
tags: [python, subprocess, passthrough, log, diff, init, testing]

# Dependency graph
requires:
  - phase: 03-execution-pipeline
    provides: run_sl() function for subprocess execution with I/O passthrough
provides:
  - cmd_log.py handler for git log translation
  - cmd_diff.py handler for git diff translation
  - cmd_init.py handler for git init translation
  - E2E tests for all three commands
affects: [04-02, 05-staged-commands, phase-05]

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "Passthrough pattern: return run_sl([command] + parsed.args)"
    - "E2E test pattern: sl_available skipif marker"

key-files:
  created:
    - cmd_log.py
    - cmd_diff.py
    - cmd_init.py
    - tests/test_cmd_log.py
    - tests/test_cmd_diff.py
    - tests/test_cmd_init.py
  modified: []

key-decisions:
  - "All three handlers follow exact cmd_status.py pattern"
  - "Tests verify exit codes and output presence, not specific content"

patterns-established:
  - "Passthrough command handlers: single return run_sl([command] + parsed.args)"
  - "E2E test structure: TestXxxBasic and TestXxxExitCodes classes"

# Metrics
duration: 3min
completed: 2026-01-18
---

# Phase 04 Plan 01: Direct Command Mappings Summary

**Passthrough handlers for log, diff, init commands using run_sl() with E2E tests verifying exit codes and output**

## Performance

- **Duration:** 3 min
- **Started:** 2026-01-18T03:55:00Z
- **Completed:** 2026-01-18T03:58:00Z
- **Tasks:** 2
- **Files created:** 6

## Accomplishments
- Created cmd_log.py, cmd_diff.py, cmd_init.py following cmd_status.py pattern
- Added dispatch cases in gitsl.py for all three commands
- Created comprehensive E2E tests (8 tests total) covering basic functionality and exit codes
- Full test suite (53 tests) passes with no regressions

## Task Commits

Each task was committed atomically:

1. **Task 1: Create passthrough command handlers** - `7088450` (feat)
2. **Task 2: Add E2E tests for passthrough commands** - `5890b56` (test)

**Plan metadata:** (to be added)

## Files Created/Modified
- `cmd_log.py` - Handler translating git log to sl log
- `cmd_diff.py` - Handler translating git diff to sl diff
- `cmd_init.py` - Handler translating git init to sl init
- `tests/test_cmd_log.py` - E2E tests for log command (3 tests)
- `tests/test_cmd_diff.py` - E2E tests for diff command (3 tests)
- `tests/test_cmd_init.py` - E2E tests for init command (2 tests)

## Decisions Made
- Followed exact cmd_status.py pattern for all handlers (single-line return)
- Tests check exit codes and output presence rather than specific output content
- Init tests use tmp_path directly (not git_repo fixture) since init creates the repo

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None - implementation followed established patterns without issues.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- Three more passthrough commands (log, diff, init) now implemented
- E2E test pattern established for future command tests
- Ready for additional command implementations

---
*Phase: 04-direct-command-mappings*
*Completed: 2026-01-18*
