public function testDiff()
 {
     $text_1 = new Tracker_Artifact_ChangesetValue_Text(111, $this->field, false, 'Problems during <ins> installation', 'text');
     $text_2 = new Tracker_Artifact_ChangesetValue_Text(111, $this->field, false, 'FullTextSearch does not work on Wiki pages', 'text');
     $this->assertEqual($text_1->diff($text_2), '<button class="btn btn-mini toggle-diff">' . $GLOBALS['Language']->getText('plugin_tracker_include_artifact', 'toggle_diff') . '</button>' . '<div class="diff" style="display: none">' . '<div class="block">' . '<div class="difftext">' . '<div class="original">' . '<tt class="prefix">-</tt>' . '<del>FullTextSearch does not work on Wiki pages</del>&nbsp;' . '</div>' . '</div>' . '<div class="difftext">' . '<div class="final">' . '<tt class="prefix">+</tt>' . '<ins>Problems during &lt;ins&gt; installation</ins>&nbsp;' . '</div>' . '</div>' . '</div>' . '</div>');
     $this->assertEqual($text_2->diff($text_1), '<button class="btn btn-mini toggle-diff">' . $GLOBALS['Language']->getText('plugin_tracker_include_artifact', 'toggle_diff') . '</button>' . '<div class="diff" style="display: none">' . '<div class="block">' . '<div class="difftext">' . '<div class="original">' . '<tt class="prefix">-</tt>' . '<del>Problems during &lt;ins&gt; installation</del>&nbsp;' . '</div>' . '</div>' . '<div class="difftext">' . '<div class="final">' . '<tt class="prefix">+</tt>' . '<ins>FullTextSearch does not work on Wiki pages</ins>&nbsp;' . '</div>' . '</div>' . '</div>' . '</div>');
 }
 function testDiff()
 {
     $field = new MockTracker_FormElement_Field_Text();
     $text_1 = new Tracker_Artifact_ChangesetValue_Text(111, $field, false, 'Problems during <ins> installation');
     $text_2 = new Tracker_Artifact_ChangesetValue_Text(111, $field, false, 'FullTextSearch does not work on Wiki pages');
     $this->assertEqual($text_1->diff($text_2), '<div class="diff">' . '<div class="block">' . '<div class="difftext">' . '<div class="original">' . '<tt class="prefix">-</tt>' . '<del>FullTextSearch does not work on Wiki pages</del>&nbsp;' . '</div>' . '</div>' . '<div class="difftext">' . '<div class="final">' . '<tt class="prefix">+</tt>' . '<ins>Problems during &lt;ins&gt; installation</ins>&nbsp;' . '</div>' . '</div>' . '</div>' . '</div>');
     $this->assertEqual($text_2->diff($text_1), '<div class="diff">' . '<div class="block">' . '<div class="difftext">' . '<div class="original">' . '<tt class="prefix">-</tt>' . '<del>Problems during &lt;ins&gt; installation</del>&nbsp;' . '</div>' . '</div>' . '<div class="difftext">' . '<div class="final">' . '<tt class="prefix">+</tt>' . '<ins>FullTextSearch does not work on Wiki pages</ins>&nbsp;' . '</div>' . '</div>' . '</div>' . '</div>');
 }