/**
  * @covers Xmf\Highlighter::apply
  * @todo   Implement testApply().
  */
 public function testApply()
 {
     $output = Highlighter::apply('test', 'This test is OK.');
     $this->assertEquals($output, 'This <strong>test</strong> is OK.');
     $output = Highlighter::apply(array('test', 'ok'), 'This test is OK.', '<i>', '</i>');
     $this->assertEquals($output, 'This <i>test</i> is <i>OK</i>.');
 }