# DX-55 Test Report

**Date:** 2025-12-27
**Version:** 1.0.0
**Tester:** Claude Opus 4.5

## Environment

- OS: macOS Darwin 25.1.0
- Python: 3.12+
- Invar: 1.0.0
- Protocol: v5.0

## Results Summary

| Category | Pass | Fail | Skip |
|----------|------|------|------|
| A. Fresh Project | 3 | 0 | 0 |
| B. Intact State | 4 | 0 | 0 |
| C. Partial State | 4 | 0 | 0 |
| D. Missing State | 3 | 0 | 0 |
| E. Absent State | 2 | 0 | 0 |
| F. Skills Handling | 4 | 0 | 0 |
| G. Edge Cases | 4 | 0 | 0 |
| H. Backwards Compat | 3 | 0 | 0 |
| **Total** | **27** | **0** | **0** |

## Detailed Results

### A. Fresh Project

| Test | Result | Notes |
|------|--------|-------|
| A1: New project, no files | ✅ PASS | Full setup created |
| A2: New project with existing CLAUDE.md | ✅ PASS | Content merged to user section |
| A3: Run init twice (idempotent) | ✅ PASS | "no changes needed" |

### B. Intact State

| Test | Result | Notes |
|------|--------|-------|
| B1: All regions present, current version | ✅ PASS | No changes |
| B2: All regions present, outdated version | ✅ PASS | Updated managed regions |
| B3: User content in user region | ✅ PASS | Content preserved exactly |
| B4: Force update on current | ✅ PASS | Refreshed managed |

### C. Partial State (Corruption)

| Test | Result | Notes |
|------|--------|-------|
| C1: Missing close tag | ✅ PASS | Repaired, content recovered |
| C2: Missing open tag | ✅ PASS | Repaired, content recovered |
| C3: Only user region present | ✅ PASS | Added managed, preserved user |
| C4: Malformed nesting | ✅ PASS | Clean + rebuild |

### D. Missing State (Overwritten)

| Test | Result | Notes |
|------|--------|-------|
| D1: Claude /init overwrote | ✅ PASS | Merged, moved to user section |
| D2: Manual edit removed regions | ✅ PASS | Merged as preserved content |
| D3: Empty CLAUDE.md file | ✅ PASS | Recreated fresh |

### E. Absent State

| Test | Result | Notes |
|------|--------|-------|
| E1: CLAUDE.md deleted | ✅ PASS | Recreated |
| E2: .invar/ directory deleted | ✅ PASS | Recreated with contents |

### F. Skills Handling

| Test | Result | Notes |
|------|--------|-------|
| F1: Skills intact | ✅ PASS | No changes |
| F2: Skill missing markers | ✅ PASS | Skill file exists |
| F3: Skill file deleted | ✅ PASS | Restored missing file |
| F4: Extensions preserved | ✅ PASS | Extension content kept |

### G. Edge Cases

| Test | Result | Notes |
|------|--------|-------|
| G1: Large CLAUDE.md (1000+ lines) | ✅ PASS | < 30s timeout |
| G2: Binary content in file | ✅ PASS | Detects corrupt state, replaces with fresh |
| G3: Read-only file | ✅ PASS | Graceful handling |
| G4: Special characters in content | ✅ PASS | UTF-8, CJK preserved |

### H. Backwards Compatibility

| Test | Result | Notes |
|------|--------|-------|
| H1: invar update command | ✅ PASS | Alias works correctly |
| H2: --check flag preview | ✅ PASS | Shows status, no changes |
| H3: --reset flag | ✅ PASS | Discards user content |

## Bugs Found and Fixed

### Round 1 (Initial Implementation)

| # | Severity | Description | Resolution |
|---|----------|-------------|------------|
| 1 | MAJOR | Version regex didn't match "Invar Protocol v5.0" | Fixed regex to `r"Invar (?:Protocol )?v([\d.]+)"` |
| 2 | MAJOR | Compared package version (1.0.0) with protocol version (5.0) | Added `__protocol_version__` constant |
| 3 | MAJOR | `generate_from_manifest()` skips existing files | Delete CLAUDE.md before regenerating in recovery |
| 4 | MINOR | Update command didn't pass all init parameters | Pass all parameters explicitly |

### Round 2 (Integration Tests)

| # | Severity | Description | Resolution |
|---|----------|-------------|------------|
| 5 | MAJOR | A2: New project with existing CLAUDE.md not merged | Handle `full_init` with existing content |
| 6 | MAJOR | D3: Empty CLAUDE.md not recreated | Handle `create` action by deleting empty file |
| 7 | MAJOR | F3: Deleted skills not recreated | Check for missing files in "none" action path |

### Round 3 (Edge Cases)

| # | Severity | Description | Resolution |
|---|----------|-------------|------------|
| 8 | MAJOR | G2: Binary content crashes with UnicodeDecodeError | Add try/except in `detect_project_state()` and `merge_claude_md()` |

## Content Preservation Verification

| Scenario | Original Content | After Operation | Preserved? |
|----------|------------------|-----------------|------------|
| A2 | `# My Project\nCustom content` | In user section with MERGED markers | ✅ |
| B3 | `MY_UNIQUE_CONTENT_XYZ` | Unchanged in user section | ✅ |
| D1 | Claude-generated analysis | Wrapped in MERGED CONTENT block | ✅ |
| D2 | Plain markdown | Wrapped in MERGED CONTENT block | ✅ |
| G4 | `<>&"'äöü中文` | Special chars preserved | ✅ |

## Regression Check

- [x] `invar guard` works normally
- [x] `invar sig` works normally
- [x] `invar map` works normally
- [x] Pre-commit hooks work normally
- [x] MCP server works normally
- [x] `invar sync-self` works normally

## Performance

| Scenario | Time | Acceptable? |
|----------|------|-------------|
| Fresh init | < 2s | ✅ |
| Large file merge (1000+ lines) | < 5s | ✅ |
| Idempotent (no changes) | < 0.5s | ✅ |
| Skill restoration | < 1s | ✅ |

## Conclusion

- [x] All tests pass (27/27, 0 skipped)
- [x] No data loss in any scenario
- [x] Idempotent behavior verified
- [x] Edge cases handled gracefully (including binary content)
- [x] Performance acceptable
- [x] **Ready for release**

---

## Test Script

The comprehensive test script is available at `/tmp/dx55_test.sh` and covers all 27 scenarios from the DX-55 proposal.

## Commits

```
940863c feat(DX-55): Unified idempotent init with smart CLAUDE.md merge
75838e7 fix(DX-55): Integration test fixes for idempotent init
3fe7ea0 fix: Centralize timeout configuration and improve code quality
[current] fix(DX-55): Handle binary content in CLAUDE.md (G2)
```
