--TEST--
findAllContentFiles: returns sorted content file paths, ignores non-content files and index.php
--FILE--
<?php
require '/var/www/app/constants.php';
require '/var/www/app/hooks.php';
require '/var/www/app/content.php';

$dir = sys_get_temp_dir() . '/phpt_content_' . getmypid();
mkdir($dir);

// Non-existent directory
echo count(findAllContentFiles($dir . '/nope')) . "\n";

// Empty directory
echo count(findAllContentFiles($dir)) . "\n";

// Content files
file_put_contents("$dir/page.md", '# Hello');
file_put_contents("$dir/extra.html", '<p>Hi</p>');
file_put_contents("$dir/script.php", '<?php echo "hi";');

// Non-content files are excluded
file_put_contents("$dir/styles.css", 'body {}');
file_put_contents("$dir/image.jpg", '');

// index.php is always excluded
file_put_contents("$dir/index.php", '<?php');

$files = findAllContentFiles($dir);
echo count($files) . "\n";

// Results are full paths, sorted by filename (natural order)
foreach ($files as $f) {
    echo basename($f) . "\n";
}

array_map('unlink', glob("$dir/*"));
rmdir($dir);
?>
--EXPECT--
0
0
3
extra.html
page.md
script.php