<?php

class TestCase220783 extends DrupalTestCase {
  function get_info() {
    return array(
      'name' => t('[220783] HTML markup is counted in for the length of trimmed posts'),
      'desc' => t('HTML markup should not be counted as "characters" when determining where to trim the post. Currently this causes a particular problem with feeds which often embed a lot of tags in their content, and for which reliable automatic teaser generation is a must. Attached patch uses a regex to allow the node_teaser() function to work out where in $body corresponds to 600 characters (or whatever the value of $size is) of actual content.'),
      'group' => t('Drupal 7 Tests'),
    );
  }
  
  function testIssue() {

    $teaser_size = 100;
    $tags_count = 10;
    $tag_size = 5;
    
    // Create some random tags
    $html_tags = array();
    $html_tags[] = '<'.$this->randomName($tag_size, '').'>';        // open tag
    $html_tags[] = '</'.$this->randomName($tag_size, '').'>';       // close tag
    $html_tags[] = '<!-- '.$this->randomName($tag_size, '').' -->'; // comment
    $html_tags[] = '<'.$this->randomName($tag_size, '').'/>';       // only tag

    // Create sample body with tags.
    // Tags must be skipped from expected character count
    $real_length = 0;
    $body = '';
    $expected_teaser = '';
    $teaser_flag = true;
    for ($i = 0; $i < $tags_count * 2; $i++) {
      $html_tag = $html_tags[$i%count($html_tags)];
      $chunk_size = ($teaser_size * 2 - $tags_count * $tag_size * 2) / count ($html_tags);
      $chunk = $this->randomName(mt_rand(0, $chunk_size), '');
      $real_length += drupal_strlen($chunk);
      if ($real_length <= $teaser_size) {
        $expected_teaser .= $chunk . $html_tag;
      } else if ($teaser_flag) {
        $expected_teaser .= drupal_substr($chunk, 0, $teaser_size - $real_length);
        $teaser_flag = false;
      }
      $body .= $chunk . $html_tag;
    }

    $teaser = node_teaser($body, null, $teaser_size);

    $this->assertIdentical($teaser, $expected_teaser);
  
  }

}