public function testProcessEntityRequest()
{
$io = new Google_CurlIO();
$req = new Google_HttpRequest("http://localhost.com");
$req->setRequestMethod("POST");
// Verify that the content-length is calculated.
$req->setPostBody("{}");
$io->processEntityRequest($req);
$this->assertEquals(2, $req->getRequestHeader("content-length"));
// Test an empty post body.
$req->setPostBody("");
$io->processEntityRequest($req);
$this->assertEquals(0, $req->getRequestHeader("content-length"));
// Test a null post body.
$req->setPostBody(null);
$io->processEntityRequest($req);
$this->assertEquals(0, $req->getRequestHeader("content-length"));
// Set an array in the postbody, and verify that it is url-encoded.
$req->setPostBody(array("a" => "1", "b" => 2));
$io->processEntityRequest($req);
$this->assertEquals(7, $req->getRequestHeader("content-length"));
$this->assertEquals(Google_CurlIO::FORM_URLENCODED, $req->getRequestHeader("content-type"));
$this->assertEquals("a=1&b=2", $req->getPostBody());
// Verify that the content-type isn't reset.
$payload = array("a" => "1", "b" => 2);
$req->setPostBody($payload);
$req->setRequestHeaders(array("content-type" => "multipart/form-data"));
$io->processEntityRequest($req);
$this->assertEquals("multipart/form-data", $req->getRequestHeader("content-type"));
$this->assertEquals($payload, $req->getPostBody());
}