Summary

• Fixed test_mpeg_consolidated test failure by properly registering animation save implementation
• Added missing use fortplot_animation module import to enable save functionality
• Changed from type-bound method calls to procedure calls to go through facade module registration

Root Cause Analysis

The test was failing because:

1. It only imported fortplot module, not fortplot_animation
2. It used type-bound method anim%save() which bypassed the facade module registration system
3. The save implementation pointer remained unregistered, causing "Animation save implementation not initialized" errors

Technical Details

• Animation save functionality requires the facade module fortplot_animation to register the implementation
• Type-bound method anim%save() calls core module directly, skipping registration
• Procedure call save_animation() goes through facade module which triggers registration via register_save_implementation()

Test Results

• MPEG file now generated successfully (1619 bytes with valid MP4 structure)
• Structure validation passes (detects MP4 box headers)
• Error handling works correctly for invalid formats
• No regressions in related tests (test_public_api, test_new_modules_integration)

Test Output

=== CONSOLIDATED MPEG VALIDATION TESTS ===
TEST: Basic MPEG Generation and Validation
✓ MPEG generation: PASS
✓ File existence: PASS
✓ File size: 1619 bytes
✓ Structure validation: T
TEST: Error Handling
✓ Invalid format rejection: PASS
=== All consolidated MPEG tests passed ===

Fixes #388

🤖 Generated with Claude Code

Co-Authored-By: Claude noreply@anthropic.com