php-curl-class/tests/helper.inc.php

<?php
class Test {
    const TEST_URL = 'https://127.0.0.1/php-curl-class/tests/server.php';

    function __construct() {
        $this->curl = new Curl();
        $this->curl->setOpt(CURLOPT_SSL_VERIFYPEER, FALSE);
        $this->curl->setOpt(CURLOPT_SSL_VERIFYHOST, FALSE);
    }

    function server($request_method, $data='') {
        $request_method = strtolower($request_method);
        $this->curl->$request_method(self::TEST_URL, $data);
        return $this->curl->response;
    }
}

function create_png() {
    // PNG image data, 1 x 1, 1-bit colormap, non-interlaced
    ob_start();
    imagepng(imagecreatefromstring(base64_decode('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7')));
    $raw_image = ob_get_contents();
    ob_end_clean();
    return $raw_image;
}

function create_tmp_file($data) {
    $tmp_file = tmpfile();
    fwrite($tmp_file, $data);
    rewind($tmp_file);
    return $tmp_file;
}

function get_png() {
    $tmp_filename = tempnam('/tmp', 'php-curl-class.');
    file_put_contents($tmp_filename, create_png());
    return $tmp_filename;
}