$t->is($request->splitHttpAcceptHeader(''), array(), '->splitHttpAcceptHeader() returns an empty array if the header is empty');
$t->is($request->splitHttpAcceptHeader('a,b,c'), array('c', 'b', 'a'), '->splitHttpAcceptHeader() returns an array of values');
$t->is($request->splitHttpAcceptHeader('a,b;q=0.7,c;q=0.3'), array('a', 'b', 'c'), '->splitHttpAcceptHeader() strips the q value');
$t->is($request->splitHttpAcceptHeader('a;q=0.1,b,c;q=0.3'), array('b', 'c', 'a'), '->splitHttpAcceptHeader() sorts values by the q value');
$t->is($request->splitHttpAcceptHeader('a; q=0.1, b, c; q=0.3'), array('b', 'c', 'a'), '->splitHttpAcceptHeader() trims whitespaces');
$t->is($request->splitHttpAcceptHeader('a; q=0, b'), array('b'), '->splitHttpAcceptHeader() removes values when q = 0 (as per the RFC)');
// ->getRequestFormat() ->setRequestFormat()
$t->diag('->getRequestFormat() ->setRequestFormat()');
$t->ok(is_null($request->getRequestFormat()), '->getRequestFormat() returns null if the format is not defined in the request');
$request->setParameter('sf_format', 'js');
$t->is($request->getRequestFormat(), 'js', '->getRequestFormat() returns the request format');
$request->setRequestFormat('css');
$t->is($request->getRequestFormat(), 'css', '->setRequestFormat() sets the request format');
// ->getFormat() ->setFormat()
$t->diag('->getFormat() ->setFormat()');
$request->setFormat('js', 'application/x-javascript');
$t->is($request->getFormat('application/x-javascript'), 'js', '->getFormat() returns the format for the given mime type');
$request->setFormat('js', array('application/x-javascript', 'text/js'));
$t->is($request->getFormat('text/js'), 'js', '->setFormat() can take an array of mime types');
$t->is($request->getFormat('foo/bar'), null, '->getFormat() returns null if the mime type does not exist');
// ->getMimeType()
$t->diag('->getMimeType()');
$t->is($request->getMimeType('js'), 'application/x-javascript', '->getMimeType() returns the first mime type for the given format');
$t->is($request->getMimeType('foo'), null, '->getMimeType() returns null if the format does not exist');
// ->isSecure()
$t->diag('->isSecure()');
$t->is($request->isSecure(), false, '->isSecure() returns false if request is not secure');
$_SERVER['HTTPS'] = 'ON';
$t->is($request->isSecure(), true, '->isSecure() checks the "HTTPS" environment variable');
$_SERVER['HTTPS'] = 'on';
$t->is($request->isSecure(), true, '->isSecure() checks the "HTTPS" environment variable');