public function test_status_only_response()
{
$RESPONSE = "HTTP/1.1 100 Continue\r\n\r\n";
$api = new RestClient();
// bypass request execution to inject controlled response data.
$api->parse_response($RESPONSE);
$this->assertEquals(["HTTP/1.1 100 Continue"], $api->response_status_lines);
$this->assertEquals((object) [], $api->headers);
$this->assertEquals("", $api->response);
}