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A test harness function that validates the ability to open and process PowerPoint and Word document files, with fallback to LibreOffice conversion for problematic files.

Purpose

This function serves as a comprehensive testing utility for document file processing. It iterates through a predefined list of test files (PPTX, PPT, DOCX, DOC, DOCM formats), attempts to open them using native Python libraries (python-pptx and python-docx), and falls back to LibreOffice conversion if direct opening fails. It provides detailed console output with status indicators and generates a summary report of all test results.

Source Code

def main():
    print("="*80)
    print("TESTING PROBLEMATIC FILES")
    print("="*80)
    
    results = {}
    
    for file_path in test_files:
        file_path_obj = Path(file_path)
        
        if not file_path_obj.exists():
            print(f"\n❌ Skipping non-existent file: {file_path_obj.name}")
            results[file_path_obj.name] = "NOT_FOUND"
            continue
            
        ext = file_path_obj.suffix.lower()
        
        if ext in ['.pptx', '.ppt']:
            success = test_pptx_file(file_path)
            results[file_path_obj.name] = "PASS" if success else "FAIL"
            
            # If direct opening failed, try LibreOffice conversion
            if not success:
                print(f"\nTrying LibreOffice conversion as fallback...")
                conv_success = test_libreoffice_conversion(file_path)
                if conv_success:
                    results[file_path_obj.name] = "PASS_WITH_CONVERSION"
                    
        elif ext in ['.docx', '.doc', '.docm']:
            success = test_docx_file(file_path)
            results[file_path_obj.name] = "PASS" if success else "FAIL"
            
            # If direct opening failed, try LibreOffice conversion
            if not success:
                print(f"\nTrying LibreOffice conversion as fallback...")
                conv_success = test_libreoffice_conversion(file_path)
                if conv_success:
                    results[file_path_obj.name] = "PASS_WITH_CONVERSION"
    
    # Print summary
    print("\n" + "="*80)
    print("SUMMARY")
    print("="*80)
    for filename, status in results.items():
        status_icon = {
            "PASS": "✓",
            "FAIL": "❌",
            "PASS_WITH_CONVERSION": "⚠️",
            "NOT_FOUND": "❓"
        }.get(status, "?")
        print(f"{status_icon} {filename}: {status}")

Return Value

This function does not return any value (implicitly returns None). Instead, it prints test results to the console and displays a summary table showing the status of each tested file with visual indicators (✓ for pass, ❌ for fail, ⚠️ for pass with conversion, ❓ for not found).

Dependencies

• pathlib
• traceback
• python-pptx
• python-docx
• subprocess
• tempfile
• sys

Required Imports

import sys
from pathlib import Path
import traceback
import pptx
from docx import Document as DocxDocument
import subprocess
import tempfile

Usage Example

# Define required dependencies first
test_files = [
    '/path/to/presentation.pptx',
    '/path/to/document.docx',
    '/path/to/legacy.ppt'
]

def test_pptx_file(file_path):
    try:
        prs = pptx.Presentation(file_path)
        return True
    except:
        return False

def test_docx_file(file_path):
    try:
        doc = DocxDocument(file_path)
        return True
    except:
        return False

def test_libreoffice_conversion(file_path):
    try:
        result = subprocess.run(['libreoffice', '--headless', '--convert-to', 'pdf', file_path], capture_output=True)
        return result.returncode == 0
    except:
        return False

# Run the test suite
if __name__ == '__main__':
    main()

Best Practices

• Ensure the 'test_files' list is populated with valid file paths before calling this function
• Implement the required helper functions (test_pptx_file, test_docx_file, test_libreoffice_conversion) before using this function
• Install LibreOffice on the system to enable the conversion fallback feature
• Consider adding error handling for the case where helper functions are not defined
• The function modifies no state and only produces console output, making it safe for repeated execution
• Use this function as part of a test suite or diagnostic tool rather than in production code
• Consider capturing the results dictionary for programmatic access instead of relying solely on console output

Tags

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