Function test_4457

tests/test_font.py:235–336

()

def test_4457():
    if os.environ.get('PYODIDE_ROOT'):
        print('test_4457(): not running on Pyodide - cannot run child processes.')
        return
        
    print()
    files = (
            ('https://github.com/user-attachments/files/20862923/test_4457_a.pdf', 'test_4457_a.pdf', None, 4),
            ('https://github.com/user-attachments/files/20862922/test_4457_b.pdf', 'test_4457_b.pdf', None, 9),
            )
    for url, name, size, rms_old_after_max in files:
        path = util.download(url, name, size)
        
        with pymupdf.open(path) as document:
            page = document[0]
            
            pixmap = document[0].get_pixmap()
            path_pixmap = f'{path}.png'
            pixmap.save(path_pixmap)
            print(f'Have created: {path_pixmap=}')
            
            text = page.get_text()
            path_before = f'{path}.before.pdf'
            path_after = f'{path}.after.pdf'
            document.ez_save(path_before, garbage=4)
            print(f'Have created {path_before=}')
            
            document.subset_fonts()
            document.ez_save(path_after, garbage=4)
            print(f'Have created {path_after=}')
        
        with pymupdf.open(path_before) as document:
            text_before = document[0].get_text()
            pixmap_before = document[0].get_pixmap()
            path_pixmap_before = f'{path_before}.png'
            pixmap_before.save(path_pixmap_before)
            print(f'Have created: {path_pixmap_before=}')
        
        with pymupdf.open(path_after) as document:
            text_after = document[0].get_text()
            pixmap_after = document[0].get_pixmap()
            path_pixmap_after = f'{path_after}.png'
            pixmap_after.save(path_pixmap_after)
            print(f'Have created: {path_pixmap_after=}')
        
        import gentle_compare
        rms_before = gentle_compare.pixmaps_rms(pixmap, pixmap_before)
        rms_after = gentle_compare.pixmaps_rms(pixmap, pixmap_after)
        print(f'{rms_before=}')
        print(f'{rms_after=}')
        
        # Create .png file showing differences between <path> and <path_after>.
        path_pixmap_after_diff = f'{path_after}.diff.png'
        pixmap_after_diff = gentle_compare.pixmaps_diff(pixmap, pixmap_after)
        pixmap_after_diff.save(path_pixmap_after_diff)
        print(f'Have created: {path_pixmap_after_diff}')
        
        # Extract text from <path>, <path_before> and <path_after> and write to