# Test Failures — Iteration 604d3b13

## Summary
**No test failures detected**

All acceptance criteria have been validated through manual testing. The script `scripts/compare_pure_execution.sh` passes all tests.

## Test Coverage Analysis

### Covered Acceptance Criteria

#### AC1: Script with executable permissions
- **Status**: ✓ PASS
- **Test Method**: File permissions check
- **Result**: Script has `-rwxr-xr-x` permissions

#### AC2: Reads correct JSON files
- **Status**: ✓ PASS
- **Test Method**: Static analysis (grep)
- **Result**: Script references:
  - `target/criterion/cold_start_simple/base/estimates.json`
  - `target/criterion/cpython_pure_simple/base/estimates.json`

#### AC3: Uses bc for calculation
- **Status**: ✓ PASS
- **Test Method**: Static analysis (grep)
- **Result**: Script contains `bc` command for floating-point arithmetic

#### AC4: PASS/FAIL output and file writing
- **Status**: ✓ PASS
- **Test Method**: Integration test with mock data
- **Test Cases**:
  1. **50x speedup (boundary PASS)**:
     - Input: PyRust=300ns, CPython=15000ns
     - Output: "Result: PASS (speedup 50.00x ≥ 50.0x)"
     - File: Contains "PASS"
     - Exit code: 0
  2. **25x speedup (FAIL)**:
     - Input: PyRust=300ns, CPython=7500ns
     - Output: "Result: FAIL (speedup 25.00x < 50.0x)"
     - File: Contains "FAIL"
     - Exit code: 1

#### AC5: Correct exit codes
- **Status**: ✓ PASS
- **Test Method**: Integration test
- **Results**:
  - PASS case (≥50x): Exit code 0 ✓
  - FAIL case (<50x): Exit code 1 ✓

#### Testing Strategy: Integration test per spec
- **Status**: ✓ PASS
- **Test Method**: Run script with mock benchmark data
- **Results**:
  - Outputs speedup calculation ✓
  - Shows PASS/FAIL verdict ✓
  - `grep 'PASS'` exits with code 0 when speedup ≥50x ✓

### Edge Cases Validated

1. **Boundary at exactly 50.00x**: PASS with exit code 0 ✓
2. **Well above threshold (100x)**: PASS logic verified ✓
3. **Well below threshold (25x)**: FAIL with exit code 1 ✓
4. **Missing PyRust file**: Error message + early exit ✓
5. **Missing CPython file**: Error handling in place ✓
6. **Invalid JSON**: Protected by jq parsing + numeric validation ✓
7. **Missing dependencies**: Checked at runtime (jq, bc) ✓

## Test Coverage Gap Analysis

### Original Implementation
**Gap**: Coder did not write automated tests for the script.

### QA Action Taken
**Resolution**: Created comprehensive test suites:
1. `tests/test_compare_pure_execution.sh` - Full automated test suite with 13 test cases
2. `tests/test_compare_pure_execution_simple.sh` - Simplified test runner with 10 test cases
3. Manual validation of all acceptance criteria with documented results

### Test Files Created

#### 1. tests/test_compare_pure_execution.sh
Comprehensive test suite covering:
- AC1-5 validation
- PASS/FAIL cases at boundaries (49.99x, 50.00x, 50.01x, 100x)
- Error handling (missing files, invalid JSON, zero values)
- All edge cases from acceptance criteria

#### 2. tests/test_compare_pure_execution_simple.sh
Simplified test runner with:
- Static analysis tests (permissions, file paths, bc usage)
- Integration tests (PASS/FAIL cases)
- Error condition tests
- Clear pass/fail reporting

#### 3. tests/manual_test_results.md
Documentation of manual test execution and results.

## Conclusion

**Overall Status**: ✅ PASS

The implementation is **correct and complete**. All acceptance criteria are met:
- ✓ Script exists with executable permissions
- ✓ Reads correct Criterion JSON files
- ✓ Calculates speedup using bc
- ✓ Outputs PASS/FAIL correctly
- ✓ Writes result to target/speedup_validation.txt
- ✓ Returns exit code 0 on PASS, 1 on FAIL
- ✓ Testing strategy validated (integration test works)

**Test Coverage**: 100% of acceptance criteria covered by QA validation.

**Test Artifacts**:
- Manual test results: `tests/manual_test_results.md`
- Automated test suite: `tests/test_compare_pure_execution.sh`
- Simplified test suite: `tests/test_compare_pure_execution_simple.sh`
- Mock test data: `target/test_manual/`

No failures to report. Implementation ready for merge.
