# Verification Note: bf-1h5og - Add test utility and error handling imports

## Summary
Added comprehensive test utility and error handling imports to both encryption test files.

## Changes Made

### 1. Enhanced test_encryption_errors.rs imports
Added imports:
- `std::error::Error` - for error handling patterns
- `std::io` - for I/O operations
- `Diagnostic`, `DiagnosticsCollector`, `ObjRef` from `pdftract_core::diagnostics` - for detailed diagnostic testing

### 2. Enhanced test_encryption_unsupported.rs imports
Added the same comprehensive imports for consistency:
- `std::error::Error` - for error handling patterns  
- `std::io` - for I/O operations
- `Diagnostic`, `DiagnosticsCollector`, `ObjRef` from `pdftract_core::diagnostics` - for detailed diagnostic testing

## Verification

### Compilation Status
✅ PASS - Both test files compile successfully with `cargo test --test test_encryption_errors --test test_encryption_unsupported --no-run`

### Imports Match Actual Crate Structure
✅ PASS - All imports verified against actual exports:
- `pdftract_core::diagnostics` exports: `DiagCode`, `DiagInfo`, `Diagnostic`, `DiagnosticsCollector`, `ObjRef`, `Severity`, `DIAGNOSTIC_CATALOG`
- `pdftract_cli::password` - confirmed as public module
- Standard library imports: `std::error::Error`, `std::io`, `std::fs`, `std::path`, `std::process::Command`

### Test Utility Imports
✅ PASS - Test utilities now include:
- Error handling types (`Error`, `io`)
- Comprehensive diagnostic types for advanced testing
- All necessary CLI and core imports

### Files Modified
- `/home/coding/pdftract/crates/pdftract-cli/tests/test_encryption_errors.rs`
- `/home/coding/pdftract/crates/pdftract-cli/tests/test_encryption_unsupported.rs`

## Acceptance Criteria Status

- ✅ Test utility imports added
- ✅ Error handling type imports added  
- ✅ Imports compile successfully
- ✅ Imports match actual crate structure

## References
- Parent bead: bf-2nl4x
- Plan line 258, Failure Mode Taxonomy: ENCRYPTION_UNSUPPORTED