jedarden 0891c2adfd test(bf-4djms): add missing std library imports to encryption test file

Added required imports for encryption testing:
- std::error::Error (for error handling)
- std::env (environment variable access)
- std::io::{self, Write} (for I/O and stdin writing in password tests)
- std::time::Duration (for timeouts)

Updated workspace_root() to use imported 'env' for consistency.
File compiles without warnings.

Acceptance criteria:
- All required std imports present: PASS
- File compiles without errors: PASS
- No unused import warnings: PASS

Closes bf-4djms

2026-07-06 12:34:47 -04:00

3.7 KiB

Raw Blame History

Verification Note for bf-4w3x9: Degraded Fixture WER Measurement

Summary

Verified the degraded PDF fixture and WER measurement script infrastructure. The fixture files are in place and the measurement script works correctly, but OCR extraction is not available in the current environment.

Acceptance Criteria Status

✅ PASS: Script infrastructure is ready

scripts/measure-wer.sh is executable and functional
tests/fixtures/scanned/calculate_wer.py implements correct WER calculation
Script accepts OCR output and ground truth as inputs
Returns exit code 0 for WER ≤ 3%, exit code 1 for WER > 3%

✅ PASS: Fixture files are properly installed

tests/fixtures/scanned/low-quality/degraded-200dpi.pdf (588KB) - verified exists
tests/fixtures/scanned/low-quality/degraded-200dpi-ground-truth.txt (1,967 chars) - verified exists
Ground truth contains 321 words from Abraham Lincoln biography
Source: Public domain Project Gutenberg eBook #11728

✅ PASS: WER calculation verified

Tested with identical files (expected 0% WER):

WER: 0.0000 (0.00%)
Reference words: 321
Hypothesis words: 321
Exit code: 0

Tested with modified file (expected small WER):

WER: 0.0125 (1.25%)
Reference words: 321
Hypothesis words: 325 (4 extra words added)
Exit code: 0 (passes 3% threshold)

⚠️ WARN: OCR extraction not available in current environment

Attempted to build pdftract with --features ocr but failed due to missing system dependencies:

pkg-config: Package lept was not found in the pkg-config search path
error: The system library 'lept' required by crate 'leptonica-sys' was not found

Impact: Cannot generate OCR output from the degraded PDF in this environment.

What Would Be Needed for Full Verification

To complete the full WER measurement as intended by the bead:

Install system dependencies: leptonica library development headers
Rebuild pdftract with OCR: cargo build --bin pdftract --release --features ocr

Extract text from degraded PDF:

./target/release/pdftract extract --text /tmp/degraded-ocr.txt \
  --ocr tests/fixtures/scanned/low-quality/degraded-200dpi.pdf

Run WER measurement:

VERBOSE=1 scripts/measure-wer.sh \
  /tmp/degraded-ocr.txt \
  tests/fixtures/scanned/low-quality/degraded-200dpi-ground-truth.txt

Expected WER Result

Based on the intentional degradation applied (200 DPI, blur, noise, contrast reduction, compression):

Expected WER: > 3% (will fail the quality gate, which is acceptable for this edge case)
The degradation was specifically designed to test OCR quality limits
This fixture is for validating that OCR quality gates work correctly

Test Infrastructure Integration

The degraded fixture integrates properly with the test infrastructure:

Located in standard fixture directory: tests/fixtures/scanned/low-quality/
Follows naming convention: {fixture-name}-ground-truth.txt
Documented in tests/fixtures/PROVENANCE.md
Measurement script follows standard pattern for scanned fixtures

Conclusion

The degraded fixture and WER measurement infrastructure are properly set up and verified. The only blocker is the missing OCR system library in the current environment, which prevents actual OCR extraction from the PDF. Once OCR dependencies are available, the full WER measurement can be performed as designed.

Files Verified

✅ scripts/measure-wer.sh - executable and functional
✅ tests/fixtures/scanned/calculate_wer.py - correct WER implementation
✅ tests/fixtures/scanned/low-quality/degraded-200dpi.pdf - 588KB fixture
✅ tests/fixtures/scanned/low-quality/degraded-200dpi-ground-truth.txt - 1,967 chars
✅ tests/fixtures/PROVENANCE.md - fixture documented

3.7 KiB Raw Blame History