public function testContentLengthHeader()
{
$r = new SS_HTTPResponse('123ü');
$r->fixContentLength();
$this->assertNotNull($r->getHeader('Content-Length'), 'Content-length header is added');
$this->assertEquals(5, $r->getHeader('Content-Length'), 'Header matches actual content length in bytes');
$r->setBody('1234ü');
$r->fixContentLength();
$this->assertEquals(6, $r->getHeader('Content-Length'), 'Header is updated when body is changed');
}
