$response->setContent('<html><head><title>foobar</title></head><body>keyword</body></html>');
$highlight->execute($chain);
$t->like($response->getContent(), '#<link .*?href=".*?search\\.css".*?/>\\n</head>#', 'highlighter adds search stylesheet');
$response->setContent('<html><head><title>foobar</title></head><body>~notice~ google search test</body></html>');
$request->getParameterHolder()->remove('h');
$_SERVER['HTTP_REFERER'] = 'http://www.google.com/search?num=50&hl=en&safe=off&q=google&btnG=Search';
$highlight->execute($chain);
$t->like($response->getContent(), '#<highlighted>google</highlighted> search test#', 'highlighter highlights results from Google');
$t->like($response->getContent(), '#<from>Google</from><keywords><highlighted>google</highlighted></keywords><remove>~remove~</remove>#', 'highlighter adds correct notice for results from Google');
$t->like($response->getContent(), '#<link .*?href=".*?search\\.css".*?/>\\n</head>#', 'highlighter adds search stylesheet for results from Google');
$t->diag('testing conditions when no highlighting occurs');
$request->getParameterHolder()->remove('h');
$_SERVER['HTTP_REFERER'] = null;
$response->setContent('<head></head><body>~notice~ keywords</body>');
$highlight->execute($chain);
$t->unlike($response->getContent(), '#~notice~#', 'highlighter removes notice replacement if there is nothing to do');
$t->unlike($response->getContent(), '#<link .*?href=".*?search\\.css".*?/>\\n</head>#', 'highlighter does not add the search stylesheet if there is nothing to do');
$t->is($response->getContent(), '<head></head><body> keywords</body>', 'highlighter leaves result untouched except for notice bang if there is nothing to do');
$_SERVER['HTTP_REFERER'] = 'http://www.slashdot.org/';
$response->setContent('<head></head><body>~notice~ google search test</body>');
$request->getParameterHolder()->remove('h');
$highlight->execute($chain);
$t->is($response->getContent(), '<head></head><body> google search test</body>', 'highlighter removes notice if there is a possible but invalid refer and does not touch rest of response');
$t->diag('testing different content types');
$content = '<head></head><body>~notice~ keyword</body>';
$response->setContent($content);
$request->setParameter('h', 'keyword');
$_SERVER['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest';
$highlight->execute($chain);
$t->is($response->getContent(), $content, 'highlighter skips highlighting on ajax requests');
$_SERVER['HTTP_X_REQUESTED_WITH'] = null;
