public function testRemoveCurlOpts()
{
$o = new PayPalHttpConfig();
$o->setCurlOptions(array('k' => 'v'));
$curlOpts = $o->getCurlOptions();
$this->assertEquals(1, count($curlOpts));
$this->assertEquals('v', $curlOpts['k']);
$o->removeCurlOption('k');
$curlOpts = $o->getCurlOptions();
$this->assertEquals(0, count($curlOpts));
}