public function test_highlight()
 {
     $str = 'inuit amma nunanga';
     $regexp = '\\S*?nga';
     $lang = 'iu';
     $highlighted = Alignment::highlight($str, $regexp, $lang);
     $expected = 'inuit amma <font color=red><b>nunanga</b></font>';
     $this->assertEquals($expected, $highlighted, "Wrong highlighting of inuktitut text");
 }