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PrivateBin/tst/ConfigurationTestGenerator.php

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#!/usr/bin/env php
<?php
/**
* generates a config unit test class
*
* This generator is meant to test all possible configuration combinations
* without having to write endless amounts of code manually.
*
* DANGER: Too many options/settings and too high max iteration setting may trigger
* a fork bomb. Please save your work before executing this script.
*/
include 'Bootstrap.php';
$vd = array('view', 'delete');
$vcd = array('view', 'create', 'delete');
new ConfigurationTestGenerator(array(
'main/discussion' => array(
array(
'setting' => true,
'tests' => array(
array(
'conditions' => array('steps' => $vd),
'type' => 'RegExp',
'args' => array(
'#<div[^>]*id="opendiscussionoption"[^>]*>#',
'$content',
'outputs enabled discussion correctly',
),
), array(
'conditions' => array('steps' => array('create'), 'traffic/limit' => 10),
'settings' => array('$_POST["opendiscussion"] = "neither 1 nor 0"'),
'type' => 'Equals',
'args' => array(
1,
'$response["status"]',
'when discussions are enabled, but invalid flag posted, fail to create paste',
),
), array(
'conditions' => array('steps' => array('create'), 'traffic/limit' => 10),
'settings' => array('$_POST["opendiscussion"] = "neither 1 nor 0"'),
'type' => 'False',
'args' => array(
'$this->_model->exists(Helper::getPasteId())',
'when discussions are enabled, but invalid flag posted, paste is not created',
),
),
),
'affects' => $vcd,
), array(
'setting' => false,
'tests' => array(
array(
'type' => 'NotRegExp',
'args' => array(
'#<div[^>]*id="opendiscussionoption"[^>]*>#',
'$content',
'outputs disabled discussion correctly',
),
),
),
'affects' => $vd,
),
),
'main/opendiscussion' => array(
array(
'setting' => true,
'tests' => array(
array(
'conditions' => array('main/discussion' => true),
'type' => 'RegExp',
'args' => array(
'#<input[^>]+id="opendiscussion"[^>]*checked="checked"[^>]*>#',
'$content',
'outputs checked discussion correctly',
),
),
),
'affects' => $vd,
), array(
'setting' => false,
'tests' => array(
array(
'conditions' => array('main/discussion' => true),
'type' => 'NotRegExp',
'args' => array(
'#<input[^>]+id="opendiscussion"[^>]*checked="checked"[^>]*>#',
'$content',
'outputs unchecked discussion correctly',
),
),
),
'affects' => $vd,
),
),
'main/burnafterreadingselected' => array(
array(
'setting' => true,
'tests' => array(
array(
'type' => 'RegExp',
'args' => array(
'#<input[^>]+id="burnafterreading"[^>]*checked="checked"[^>]*>#',
'$content',
'preselects burn after reading option',
),
),
),
'affects' => array('view'),
), array(
'setting' => false,
'tests' => array(
array(
'type' => 'NotRegExp',
'args' => array(
'#<input[^>]+id="burnafterreading"[^>]*checked="checked"[^>]*>#',
'$content',
'burn after reading option is unchecked',
),
),
),
'affects' => array('view'),
),
),
'main/password' => array(
array(
'setting' => true,
'tests' => array(
array(
'type' => 'RegExp',
'args' => array(
'#<div[^>]*id="password"[^>]*>#',
'$content',
'outputs password input correctly',
),
),
),
'affects' => $vd,
), array(
'setting' => false,
'tests' => array(
array(
'conditions' => array('main/discussion' => true),
'type' => 'NotRegExp',
'args' => array(
'#<div[^>]*id="password"[^>]*>#',
'$content',
'removes password input correctly',
),
),
),
'affects' => $vd,
),
),
'main/template' => array(
array(
'setting' => 'page',
'tests' => array(
array(
'type' => 'RegExp',
'args' => array(
'#<link[^>]+type="text/css"[^>]+rel="stylesheet"[^>]+href="css/privatebin\.css\\?\d[\d\.]+\d+"[^>]*/>#',
'$content',
'outputs "page" stylesheet correctly',
),
), array(
'type' => 'NotRegExp',
'args' => array(
'#<link[^>]+type="text/css"[^>]+rel="stylesheet"[^>]+href="css/bootstrap/bootstrap-\d[\d\.]+\d\.css"[^>]*/>#',
'$content',
'removes "bootstrap" stylesheet correctly',
),
),
),
'affects' => $vd,
), array(
'setting' => 'bootstrap',
'tests' => array(
array(
'type' => 'NotRegExp',
'args' => array(
'#<link[^>]+type="text/css"[^>]+rel="stylesheet"[^>]+href="css/privatebin\.css\\?\d[\d\.]+\d+"[^>]*/>#',
'$content',
'removes "page" stylesheet correctly',
),
), array(
'type' => 'RegExp',
'args' => array(
'#<link[^>]+type="text/css"[^>]+rel="stylesheet"[^>]+href="css/bootstrap/bootstrap-\d[\d\.]+\d\.css"[^>]*/>#',
'$content',
'outputs "bootstrap" stylesheet correctly',
),
),
),
'affects' => $vd,
),
),
'main/sizelimit' => array(
array(
'setting' => 10,
'tests' => array(
array(
'conditions' => array('steps' => array('create'), 'traffic/limit' => 10),
'type' => 'Equals',
'args' => array(
1,
'$response["status"]',
'when sizelimit limit exceeded, fail to create paste',
),
),
),
'affects' => array('create'),
), array(
'setting' => 2097152,
'tests' => array(
array(
'conditions' => array('steps' => array('create'), 'traffic/limit' => 0, 'main/burnafterreadingselected' => true),
'settings' => array('sleep(3)'),
'type' => 'Equals',
'args' => array(
0,
'$response["status"]',
'when sizelimit limit is not reached, successfully create paste',
),
), array(
'conditions' => array('steps' => array('create'), 'traffic/limit' => 0, 'main/burnafterreadingselected' => true),
'settings' => array('sleep(3)'),
'type' => 'True',
'args' => array(
'$this->_model->exists($response["id"])',
'when sizelimit limit is not reached, paste exists after posting data',
),
),
),
'affects' => array('create'),
),
),
'traffic/limit' => array(
array(
'setting' => 0,
'tests' => array(
array(
'conditions' => array('steps' => array('create'), 'main/sizelimit' => 2097152),
'type' => 'Equals',
'args' => array(
0,
'$response["status"]',
'when traffic limit is disabled, successfully create paste',
),
), array(
'conditions' => array('steps' => array('create'), 'main/sizelimit' => 2097152),
'type' => 'True',
'args' => array(
'$this->_model->exists($response["id"])',
'when traffic limit is disabled, paste exists after posting data',
),
),
),
'affects' => array('create'),
), array(
'setting' => 10,
'tests' => array(
array(
'conditions' => array('steps' => array('create')),
'type' => 'Equals',
'args' => array(
1,
'$response["status"]',
'when traffic limit is on and we do not wait, fail to create paste',
),
),
),
'affects' => array('create'),
), array(
'setting' => 2,
'tests' => array(
array(
'conditions' => array('steps' => array('create'), 'main/sizelimit' => 2097152),
'settings' => array('sleep(3)'),
'type' => 'Equals',
'args' => array(
0,
'$response["status"]',
'when traffic limit is on and we wait, successfully create paste',
),
), array(
'conditions' => array('steps' => array('create'), 'main/sizelimit' => 2097152),
'settings' => array('sleep(3)'),
'type' => 'True',
'args' => array(
'$this->_model->exists($response["id"])',
'when traffic limit is on and we wait, paste exists after posting data',
),
),
),
'affects' => array('create'),
),
),
));
class ConfigurationTestGenerator
{
/**
* endless loop protection, since we're working with a recursive function,
* creating factorial configurations
* @var int
*/
const MAX_ITERATIONS = 2000;
/**
* options to test
* @var array
*/
private $_options;
/**
* iteration count to guarantee timely end
* @var int
*/
private $_iterationCount = 0;
/**
* generated configurations
* @var array
*/
private $_configurations = array(
array('options' => array(), 'tests' => array(), 'affects' => array()),
);
/**
* constructor, generates the configuration test
* @param array $options
*/
public function __construct($options)
{
$this->_options = $options;
// generate all possible combinations of options: options^settings
$this->_generateConfigurations();
$this->_writeConfigurationTest();
}
/**
* write configuration test file based on generated configuration array
*/
private function _writeConfigurationTest()
{
$defaultOptions = parse_ini_file(CONF_SAMPLE, true);
$code = $this->_getHeader();
foreach ($this->_configurations as $key => $conf) {
$fullOptions = array_replace_recursive($defaultOptions, $conf['options']);
$options = Helper::varExportMin($fullOptions, true);
foreach ($conf['affects'] as $step) {
$testCode = $preCode = array();
foreach ($conf['tests'] as $tests) {
foreach ($tests[0] as $test) {
// skip if test does not affect this step
if (!in_array($step, $tests[1])) {
continue;
}
// skip if not all test conditions are met
if (array_key_exists('conditions', $test)) {
while (list($path, $setting) = each($test['conditions'])) {
if ($path == 'steps' && !in_array($step, $setting)) {
continue 2;
} elseif ($path != 'steps') {
list($section, $option) = explode('/', $path);
if ($fullOptions[$section][$option] !== $setting) {
continue 2;
}
}
}
}
if (array_key_exists('settings', $test)) {
foreach ($test['settings'] as $setting) {
$preCode[$setting] = $setting;
}
}
$args = array();
foreach ($test['args'] as $arg) {
if (is_string($arg) && strpos($arg, '$') === 0) {
$args[] = $arg;
} else {
$args[] = Helper::varExportMin($arg, true);
}
}
$testCode[] = array($test['type'], implode(', ', $args));
}
}
$code .= $this->_getFunction(
ucfirst($step), $key, $options, $preCode, $testCode, $fullOptions['main']['discussion']
);
}
}
$code .= '}' . PHP_EOL;
file_put_contents('ConfigurationCombinationsTest.php', $code);
}
/**
* get header of configuration test file
*
* @return string
*/
private function _getHeader()
{
return <<<'EOT'
<?php
/**
* DO NOT EDIT: This file is generated automatically using configGenerator.php
*/
use PHPUnit\Framework\TestCase;
use PrivateBin\Controller;
use PrivateBin\Data\Filesystem;
use PrivateBin\Persistence\ServerSalt;
use PrivateBin\Persistence\TrafficLimiter;
use PrivateBin\Request;
class ConfigurationCombinationsTest extends TestCase
{
private $_conf;
private $_model;
private $_path;
public function setUp()
{
/* Setup Routine */
Helper::confBackup();
$this->_path = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'privatebin_data';
$this->_model = Filesystem::getInstance(array('dir' => $this->_path));
ServerSalt::setPath($this->_path);
TrafficLimiter::setPath($this->_path);
$this->reset();
}
public function tearDown()
{
/* Tear Down Routine */
unlink(CONF);
Helper::confRestore();
Helper::rmDir($this->_path);
}
public function reset($configuration = array())
{
$_POST = array();
$_GET = array();
$_SERVER = array();
if ($this->_model->exists(Helper::getPasteId()))
$this->_model->delete(Helper::getPasteId());
$configuration['model_options']['dir'] = $this->_path;
$configuration['traffic']['dir'] = $this->_path;
$configuration['purge']['dir'] = $this->_path;
Helper::createIniFile(CONF, $configuration);
}
EOT;
}
/**
* get unit tests function block
*
* @param string $step
* @param int $key
* @param array $options
* @param array $preCode
* @param array $testCode
* @return string
*/
private function _getFunction($step, $key, &$options, $preCode, $testCode, $discussionEnabled)
{
if (count($testCode) == 0) {
echo "skipping creation of test$step$key, no valid tests found for configuration: $options" . PHP_EOL;
return '';
}
$preString = $testString = '';
foreach ($preCode as $setting) {
$preString .= " $setting;" . PHP_EOL;
}
foreach ($testCode as $test) {
$type = $test[0];
$args = $test[1];
$testString .= " \$this->assert$type($args);" . PHP_EOL;
}
$code = <<<EOT
/**
* @runInSeparateProcess
*/
public function test$step$key()
{
\$this->reset($options);
EOT;
// step specific initialization
switch ($step) {
case 'Create':
if ($discussionEnabled) {
$code .= PHP_EOL . <<<'EOT'
$paste = Helper::getPasteJson();
EOT;
} else {
$code .= PHP_EOL . <<<'EOT'
$paste = json_decode(Helper::getPasteJson(), true);
$paste['adata'][2] = 0;
$paste = json_encode($paste);
EOT;
}
$code .= PHP_EOL . <<<'EOT'
$file = tempnam(sys_get_temp_dir(), 'FOO');
file_put_contents($file, $paste);
Request::setInputStream($file);
$_SERVER['HTTP_X_REQUESTED_WITH'] = 'JSONHttpRequest';
$_SERVER['REQUEST_METHOD'] = 'POST';
$_SERVER['REMOTE_ADDR'] = '::1';
TrafficLimiter::canPass();
EOT;
break;
case 'Read':
$code .= PHP_EOL . <<<'EOT'
$this->_model->create(Helper::getPasteId(), Helper::getPaste());
$_SERVER['QUERY_STRING'] = Helper::getPasteId();
$_GET[Helper::getPasteId()] = '';
$_SERVER['HTTP_X_REQUESTED_WITH'] = 'JSONHttpRequest';
EOT;
break;
case 'Delete':
$code .= PHP_EOL . <<<'EOT'
$this->_model->create(Helper::getPasteId(), Helper::getPaste());
$this->assertTrue($this->_model->exists(Helper::getPasteId()), 'paste exists before deleting data');
$_GET['pasteid'] = Helper::getPasteId();
$_GET['deletetoken'] = hash_hmac('sha256', Helper::getPasteId(), $this->_model->read(Helper::getPasteId())['meta']['salt']);
EOT;
break;
}
// all steps
$code .= PHP_EOL . $preString;
$code .= <<<'EOT'
ob_start();
new Controller;
$content = ob_get_contents();
ob_end_clean();
EOT;
// step specific tests
switch ($step) {
case 'Create':
$code .= <<<'EOT'
$response = json_decode($content, true);
EOT;
break;
case 'Read':
$code .= <<<'EOT'
$response = json_decode($content, true);
$this->assertEquals(0, $response['status'], 'outputs success status');
$this->assertEquals(Helper::getPasteId(), $response['id'], 'outputs id correctly');
$this->assertEquals(Helper::getPaste()['data'], $response['data'], 'outputs data correctly');
EOT;
break;
case 'Delete':
$code .= <<<'EOT'
$this->assertRegExp(
'#<div[^>]*id="status"[^>]*>.*Paste was properly deleted[^<]*</div>#s',
$content,
'outputs deleted status correctly'
);
$this->assertFalse($this->_model->exists(Helper::getPasteId()), 'paste successfully deleted');
EOT;
break;
}
return $code . PHP_EOL . PHP_EOL . $testString . ' }' . PHP_EOL . PHP_EOL;
}
/**
* recursive function to generate configurations based on options
*
* @throws Exception
* @return array
*/
private function _generateConfigurations()
{
// recursive factorial function
if (++$this->_iterationCount > self::MAX_ITERATIONS) {
echo 'max iterations reached, stopping', PHP_EOL;
return $this->_configurations;
}
echo "generateConfigurations: iteration $this->_iterationCount", PHP_EOL;
$continue = list($path, $settings) = each($this->_options);
if ($continue === false) {
return $this->_configurations;
}
list($section, $option) = explode('/', $path);
for ($c = 0, $max = count($this->_configurations); $c < $max; ++$c) {
if (!array_key_exists($section, $this->_configurations[$c]['options'])) {
$this->_configurations[$c]['options'][$section] = array();
}
if (count($settings) == 0) {
throw new Exception("Check your \$options: option $option has no settings!");
}
// set the first setting in the original configuration
$setting = current($settings);
$this->_addSetting($this->_configurations[$c], $setting, $section, $option);
// create clones for each of the other settings
while ($setting = next($settings)) {
$clone = $this->_configurations[$c];
$this->_configurations[] = $this->_addSetting($clone, $setting, $section, $option);
}
reset($settings);
}
return $this->_generateConfigurations();
}
/**
* add a setting to the given configuration
*
* @param array $configuration
* @param array $setting
* @param string $section
* @param string $option
* @throws Exception
* @return array
*/
private function _addSetting(&$configuration, &$setting, &$section, &$option)
{
if (++$this->_iterationCount > self::MAX_ITERATIONS) {
echo 'max iterations reached, stopping', PHP_EOL;
return $configuration;
}
echo "addSetting: iteration $this->_iterationCount", PHP_EOL;
if (
array_key_exists($option, $configuration['options'][$section]) &&
$configuration['options'][$section][$option] === $setting['setting']
) {
$val = Helper::varExportMin($setting['setting'], true);
throw new Exception("Endless loop or error in options detected: option '$option' already exists with setting '$val' in one of the configurations!");
}
$configuration['options'][$section][$option] = $setting['setting'];
$configuration['tests'][$option] = array($setting['tests'], $setting['affects']);
foreach ($setting['affects'] as $affects) {
if (!in_array($affects, $configuration['affects'])) {
$configuration['affects'][] = $affects;
}
}
return $configuration;
}
}
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