public function testDnsError()
{
$curl = new Curl("http://not.existing");
$curl->setOpt(CURLOPT_RETURNTRANSFER, true);
$curl->setOpt(CURLOPT_USERAGENT, "PHPCurl");
$curl->exec();
$this->assertEquals(CURLE_COULDNT_RESOLVE_HOST, $curl->getErrorNumber());
$this->assertContains("resolve host", $curl->getErrorString());
$this->assertContains("not.existing", $curl->getErrorString());
}
