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<?php
/**
* Tests for the BigMath functions.
*
* PHP versions 4 and 5
*
* LICENSE: See the COPYING file included in this distribution.
*
* @package OpenID
* @author JanRain, Inc. <openid@janrain.com>
* @copyright 2005-2008 Janrain, Inc.
* @license http://www.apache.org/licenses/LICENSE-2.0 Apache
*/
require_once 'Auth/OpenID/BigMath.php';
require_once 'Tests/Auth/OpenID/TestUtil.php';
class Tests_Auth_OpenID_BinLongConvertRnd extends PHPUnit_Framework_TestCase {
var $lib;
var $max;
function Tests_Auth_OpenID_BinLongConvertRnd($lib, $max)
{
$this->lib =& $lib;
$this->max = $max;
}
function runTest()
{
$n = $this->lib->init(0);
foreach (range(0, 9) as $i) {
$rnd = $this->lib->rand($this->max);
$n = $this->lib->add($n, $rnd);
}
$s = $this->lib->longToBinary($n);
$this->assertTrue(is_string($s));
$n_prime = $this->lib->binaryToLong($s);
$this->assertEquals($this->lib->cmp($n, $n_prime), 0);
}
}
class Tests_Auth_OpenID_BinLongConvert extends PHPUnit_Framework_TestCase {
var $lib;
var $bin;
var $lng;
function Tests_Auth_OpenID_BinLongConvert($lib, $bin, $lng)
{
$this->lib =& $lib;
$this->bin = $bin;
$this->lng = $lng;
}
function runTest()
{
$n_prime = $this->lib->binaryToLong($this->bin);
$s_prime = $this->lib->longToBinary($this->lng);
$this->assertEquals($this->lib->cmp($this->lng, $n_prime), 0);
$this->assertTrue($this->bin == $s_prime);
}
}
class Tests_Auth_OpenID_Base64ToLong extends PHPUnit_Framework_TestCase {
var $num;
var $b64;
var $lib;
function Tests_Auth_OpenID_Base64ToLong($lib, $b64, $num)
{
$this->lib = $lib;
$this->b64 = $b64;
$this->num = $num;
}
function runTest()
{
$actual = $this->lib->base64ToLong($this->b64);
$this->assertTrue($this->lib->cmp($this->num, $actual) == 0);
}
}
class Tests_Auth_OpenID_LongToBase64 extends Tests_Auth_OpenID_Base64ToLong {
function Tests_Auth_OpenID_LongToBase64($lib, $b64, $num)
{
$this->lib = $lib;
$this->b64 = $b64;
$this->num = $num;
}
function runTest()
{
$actual = $this->lib->longToBase64($this->num);
$this->assertEquals($this->b64, $actual);
}
}
class Tests_Auth_OpenID_Rand extends PHPUnit_Framework_TestCase {
function Tests_Auth_OpenID_Rand($lib)
{
$this->lib =& $lib;
}
function runTest()
{
$stop = $this->lib->pow(2, 128);
$a = $this->lib->rand($stop);
$b = $this->lib->rand($stop);
$this->assertFalse($this->lib->cmp($b, $a) == 0, "Same: $a $b");
$n = $this->lib->init(Tests_Auth_OpenID_maxint());
$n = $this->lib->add($n, 1);
// Make sure that we can generate random numbers that are
// larger than platform int size
$result = $this->lib->rand($n);
// What can we say about the result?
}
}
/**
* Computes the maximum integer value for this PHP installation.
*
* @return int $max_int_value The maximum integer value for this
* PHP installation
*/
function Tests_Auth_OpenID_maxint()
{
/* assumes largest integer is of form 2^n - 1 */
$to_test = pow(2, 16);
while (1) {
$last = $to_test;
$to_test = 2 * $to_test;
if (($to_test < $last) || (!is_int($to_test))) {
return($last + ($last - 1));
}
}
}
class Tests_Auth_OpenID_BigMath extends PHPUnit_Framework_TestSuite {
function _parseBase64Data()
{
$lines = Tests_Auth_OpenID_readlines('n2b64');
$data = array();
foreach ($lines as $line) {
$line = trim($line);
if (!$line) {
continue;
}
list($b64, $ascii) = explode(' ', $line);
$data[$b64] = $ascii;
}
return $data;
}
function _addB64Tests()
{
$lib = Auth_OpenID_getMathLib();
$count = defined('Tests_Auth_OpenID_thorough') ? -1 : 2;
$data = $this->_parseBase64Data();
foreach ($data as $b64 => $num_s) {
// Only test the first few unless thorough is defined
if (strlen($num_s) > 5) {
if ($count == 0) {
break;
} else {
$count -= 1;
}
}
$num = $lib->init($num_s);
$test = new Tests_Auth_OpenID_Base64ToLong($lib, $b64, $num);
$test->setName("B64->Long $num_s");
$this->addTest($test);
$test = new Tests_Auth_OpenID_LongToBase64($lib, $b64, $num);
$test->setName("Long->B64 $num_s");
$this->addTest($test);
}
}
function _addBinLongTests()
{
$lib =& Auth_OpenID_getMathLib();
$max = Tests_Auth_OpenID_maxint();
$upper = defined('Tests_Auth_OpenID_thorough') ? 499 : 3;
foreach (range(0, $upper) as $iteration) {
$test = new Tests_Auth_OpenID_BinLongConvertRnd($lib, $max);
$test->setName("BinLongConvertRnd " . strval($iteration));
$this->addTest($test);
}
$cases = array(
array("\x00", 0),
array("\x01", 1),
array("\x7F", 127),
array("\x00\x80", 128),
array("\x00\x81", 129),
array("\x00\xFF", 255),
array("\x00\x80\x00", 32768),
array("OpenID is cool",
"1611215304203901150134421257416556")
);
foreach ($cases as $case) {
list($bin, $lng_m) = $case;
$lng = $lib->init($lng_m);
$test = new Tests_Auth_OpenID_BinLongConvert($lib, $bin, $lng);
$test->setName('BinLongConvert ' . bin2hex($bin));
$this->addTest($test);
}
}
function Tests_Auth_OpenID_BigMath($name)
{
$this->setName($name);
if (defined('Auth_OpenID_NO_MATH_SUPPORT')) {
return;
}
$this->_addB64Tests();
$this->_addBinLongTests();
$test = new Tests_Auth_OpenID_Rand(Auth_OpenID_getMathLib());
$test->setName('Big number rand');
$this->addTest($test);
}
}
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