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function test_pdf_session_integration

Maturity: 46

Integration test function that verifies PDF generation includes session tracking information by creating both response and error PDFs with conversation IDs and exchange numbers.

File:
/tf/active/vicechatdev/e-ink-llm/test_pdf_session.py
Lines:
11 - 72
Complexity:
moderate

Purpose

This test function validates the integration between SessionManager and PDFGenerator components, ensuring that generated PDFs properly embed session metadata (conversation IDs and exchange numbers). It creates temporary test PDFs for both successful responses and error cases, then verifies the files are created with expected content sizes. This is crucial for maintaining conversation context across multiple document exchanges in a session-based PDF processing system.

Source Code

def test_pdf_session_integration():
    """Test that PDFs include session information"""
    print("🧪 Testing PDF Session Integration...")
    
    # Create temporary directory for test files
    with tempfile.TemporaryDirectory() as temp_dir:
        temp_path = Path(temp_dir)
        
        # Initialize components
        session_manager = SessionManager()
        pdf_generator = PDFGenerator()
        
        # Start a new conversation
        conversation_id = session_manager.create_conversation()
        print(f"📝 Started conversation: {conversation_id}")
        
        # Create test response PDF
        test_response = "This is a test response to verify session tracking in PDFs."
        test_metadata = {
            "filename": "test_input.txt",
            "processing_time": 1.5,
            "tokens_used": 100,
            "timestamp": "2025-01-31 22:42:48"
        }
        response_pdf = temp_path / "test_response.pdf"
        
        pdf_generator.create_response_pdf(
            llm_response=test_response,
            original_image_b64="",  # Empty for text input
            metadata=test_metadata,
            output_path=str(response_pdf),
            conversation_id=conversation_id,
            exchange_number=1
        )
        
        print(f"✅ Response PDF created: {response_pdf}")
        print(f"   Size: {response_pdf.stat().st_size} bytes")
        
        # Create test error PDF
        error_pdf = temp_path / "test_error.pdf"
        
        pdf_generator.generate_error_pdf(
            error_message="This is a test error message",
            original_file="test_input.txt",
            output_path=str(error_pdf),
            conversation_id=conversation_id,
            exchange_number=2
        )
        
        print(f"✅ Error PDF created: {error_pdf}")
        print(f"   Size: {error_pdf.stat().st_size} bytes")
        
        # Verify both files exist and have content
        assert response_pdf.exists(), "Response PDF should exist"
        assert error_pdf.exists(), "Error PDF should exist"
        assert response_pdf.stat().st_size > 1000, "Response PDF should have substantial content"
        assert error_pdf.stat().st_size > 1000, "Error PDF should have substantial content"
        
        print("🎉 All PDF session integration tests passed!")
        print(f"   Session ID: {conversation_id}")
        print(f"   Response PDF: {response_pdf.name}")
        print(f"   Error PDF: {error_pdf.name}")

Return Value

This function does not return any value (implicitly returns None). It performs assertions and prints test progress/results to stdout. If any assertion fails, it will raise an AssertionError.

Dependencies

  • tempfile
  • os
  • pathlib

Required Imports

import tempfile
import os
from pathlib import Path
from pdf_generator import PDFGenerator
from session_manager import SessionManager

Usage Example

# Run the integration test
test_pdf_session_integration()

# Expected output:
# 🧪 Testing PDF Session Integration...
# 📝 Started conversation: <conversation_id>
# ✅ Response PDF created: <path>
#    Size: <bytes> bytes
# ✅ Error PDF created: <path>
#    Size: <bytes> bytes
# 🎉 All PDF session integration tests passed!
#    Session ID: <conversation_id>
#    Response PDF: test_response.pdf
#    Error PDF: test_error.pdf

Best Practices

  • This test function uses tempfile.TemporaryDirectory() context manager to ensure automatic cleanup of test files
  • The function performs size assertions (>1000 bytes) to verify PDFs contain substantial content, not just empty files
  • Test creates both success and error scenarios to validate complete PDF generation workflow
  • Session tracking is validated by passing conversation_id and exchange_number to PDF generation methods
  • Should be run as part of a test suite, not in production code
  • Requires PDFGenerator and SessionManager classes to be properly implemented and available in the module path
  • The test uses hardcoded metadata values suitable for testing; real implementations should use actual data
  • Print statements provide verbose output for debugging test failures

Tags

testing integration-test pdf-generation session-management conversation-tracking file-generation temporary-files validation quality-assurance

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