$t->is($request->getPreferredCulture(array('fr', 'en')), 'en', '->getPreferredCulture() returns the preferred culture');
$request->languages = null;
$_SERVER['HTTP_ACCEPT_LANGUAGE'] = 'en-us,en;q=0.5,fr';
$t->is($request->getPreferredCulture(array('fr', 'en')), 'fr', '->getPreferredCulture() returns the preferred culture');
// ->getCharsets()
$t->diag('->getCharsets()');
$t->is($request->getCharsets(), array(), '->getCharsets() returns an empty array if the client do not send an ACCEPT_CHARSET header');
$request->charsets = null;
$_SERVER['HTTP_ACCEPT_CHARSET'] = '';
$t->is($request->getCharsets(), array(), '->getCharsets() returns an empty array if the client send an empty ACCEPT_CHARSET header');
$request->charsets = null;
$_SERVER['HTTP_ACCEPT_CHARSET'] = 'ISO-8859-1,utf-8;q=0.7,*;q=0.3';
$t->is($request->getCharsets(), array('ISO-8859-1', 'utf-8', '*'), '->getCharsets() returns an array with all accepted charsets');
// ->getAcceptableContentTypes()
$t->diag('->getAcceptableContentTypes()');
$t->is($request->getAcceptableContentTypes(), array(), '->getAcceptableContentTypes() returns an empty array if the client do not send an ACCEPT header');
$request->acceptableContentTypes = null;
$_SERVER['HTTP_ACCEPT'] = '';
$t->is($request->getAcceptableContentTypes(), array(), '->getAcceptableContentTypes() returns an empty array if the client send an empty ACCEPT header');
$request->acceptableContentTypes = null;
$_SERVER['HTTP_ACCEPT'] = 'text/xml,application/xhtml+xml,application/xml,text/html;q=0.9,text/plain;q=0.8,*/*;q=0.5';
$t->is($request->getAcceptableContentTypes(), array('text/xml', 'application/xml', 'application/xhtml+xml', 'text/html', 'text/plain', '*/*'), '->getAcceptableContentTypes() returns an array with all accepted content types');
// ->splitHttpAcceptHeader()
$t->diag('->splitHttpAcceptHeader()');
$t->is($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()
