drupal/core/modules/simpletest/simpletest.install

<?php

/**
 * @file
 * Install, update and uninstall functions for the simpletest module.
 */

use Drupal\Component\Utility\Environment;
use Drupal\Core\File\Exception\FileException;
use PHPUnit\Framework\TestCase;

/**
 * Minimum value of PHP memory_limit for SimpleTest.
 */
const SIMPLETEST_MINIMUM_PHP_MEMORY_LIMIT = '128M';

/**
 * Implements hook_requirements().
 */
function simpletest_requirements($phase) {
  $requirements = [];

  $has_phpunit = class_exists(TestCase::class);
  $has_curl = function_exists('curl_init');
  $open_basedir = ini_get('open_basedir');

  $requirements['phpunit'] = [
    'title' => t('PHPUnit dependency'),
    'value' => $has_phpunit ? t('Found') : t('Not found'),
  ];
  if (!$has_phpunit) {
    $requirements['phpunit']['severity'] = REQUIREMENT_ERROR;
    $requirements['phpunit']['description'] = t("The testing framework requires the PHPUnit package. Please run 'composer install' to ensure it is present.");
  }

  $requirements['curl'] = [
    'title' => t('cURL'),
    'value' => $has_curl ? t('Enabled') : t('Not found'),
  ];
  if (!$has_curl) {
    $requirements['curl']['severity'] = REQUIREMENT_ERROR;
    $requirements['curl']['description'] = t('The testing framework requires the <a href="https://secure.php.net/manual/en/curl.setup.php">PHP cURL library</a>. For more information, see the <a href="https://www.drupal.org/requirements/php/curl">online information on installing the PHP cURL extension</a>.');
  }

  // SimpleTest currently needs 2 cURL options which are incompatible with
  // having PHP's open_basedir restriction set.
  // See https://www.drupal.org/node/674304.
  $requirements['php_open_basedir'] = [
    'title' => t('PHP open_basedir restriction'),
    'value' => $open_basedir ? t('Enabled') : t('Disabled'),
  ];
  if ($open_basedir) {
    $requirements['php_open_basedir']['severity'] = REQUIREMENT_ERROR;
    $requirements['php_open_basedir']['description'] = t('The testing framework requires the PHP <a href="http://php.net/manual/ini.core.php#ini.open-basedir">open_basedir</a> restriction to be disabled. Check your webserver configuration or contact your web host.');
  }

  // Check the current memory limit. If it is set too low, SimpleTest will fail
  // to load all tests and throw a fatal error.
  $memory_limit = ini_get('memory_limit');
  if (!Environment::checkMemoryLimit(SIMPLETEST_MINIMUM_PHP_MEMORY_LIMIT, $memory_limit)) {
    $requirements['php_memory_limit']['severity'] = REQUIREMENT_WARNING;
    $requirements['php_memory_limit']['description'] = t('The testing framework requires the PHP memory limit to be at least %memory_minimum_limit. The current value is %memory_limit. <a href=":url">Follow these steps to continue</a>.', ['%memory_limit' => $memory_limit, '%memory_minimum_limit' => SIMPLETEST_MINIMUM_PHP_MEMORY_LIMIT, ':url' => 'https://www.drupal.org/node/207036']);
  }

  $site_directory = 'sites/simpletest';
  if (!drupal_verify_install_file(\Drupal::root() . '/' . $site_directory, FILE_EXIST | FILE_READABLE | FILE_WRITABLE | FILE_EXECUTABLE, 'dir')) {
    $requirements['simpletest_site_directory'] = [
      'title' => t('Simpletest site directory'),
      'value' => is_dir(\Drupal::root() . '/' . $site_directory) ? t('Not writable') : t('Missing'),
      'severity' => REQUIREMENT_ERROR,
      'description' => t('The testing framework requires the %sites-simpletest directory to exist and be writable in order to run tests.', [
        '%sites-simpletest' => $site_directory,
      ]),
    ];
  }
  elseif (!file_save_htaccess(\Drupal::root() . '/' . $site_directory, FALSE)) {
    $requirements['simpletest_site_directory'] = [
      'title' => t('Simpletest site directory'),
      'value' => t('Not protected'),
      'severity' => REQUIREMENT_ERROR,
      'description' => t('The file %file does not exist and could not be created automatically, which poses a security risk. Ensure that the directory is writable.', [
        '%file' => $site_directory . '/.htaccess',
      ]),
    ];
  }

  return $requirements;
}

/**
 * Implements hook_schema().
 */
function simpletest_schema() {
  $schema['simpletest'] = [
    'description' => 'Stores simpletest messages',
    'fields' => [
      'message_id'  => [
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'Primary Key: Unique simpletest message ID.',
      ],
      'test_id' => [
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Test ID, messages belonging to the same ID are reported together',
      ],
      'test_class' => [
        'type' => 'varchar_ascii',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'The name of the class that created this message.',
      ],
      'status' => [
        'type' => 'varchar',
        'length' => 9,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Message status. Core understands pass, fail, exception.',
      ],
      'message' => [
        'type' => 'text',
        'not null' => TRUE,
        'description' => 'The message itself.',
      ],
      'message_group' => [
        'type' => 'varchar_ascii',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'The message group this message belongs to. For example: warning, browser, user.',
      ],
      'function' => [
        'type' => 'varchar_ascii',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Name of the assertion function or method that created this message.',
      ],
      'line' => [
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Line number on which the function is called.',
      ],
      'file' => [
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Name of the file where the function is called.',
      ],
    ],
    'primary key' => ['message_id'],
    'indexes' => [
      'reporter' => ['test_class', 'message_id'],
    ],
  ];
  $schema['simpletest_test_id'] = [
    'description' => 'Stores simpletest test IDs, used to auto-increment the test ID so that a fresh test ID is used.',
    'fields' => [
      'test_id'  => [
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'Primary Key: Unique simpletest ID used to group test results together. Each time a set of tests
                            are run a new test ID is used.',
      ],
      'last_prefix' => [
        'type' => 'varchar',
        'length' => 60,
        'not null' => FALSE,
        'default' => '',
        'description' => 'The last database prefix used during testing.',
      ],
    ],
    'primary key' => ['test_id'],
  ];
  return $schema;
}

/**
 * Implements hook_uninstall().
 */
function simpletest_uninstall() {
  // Do not clean the environment in case the Simpletest module is uninstalled
  // in a (recursive) test for itself, since simpletest_clean_environment()
  // would also delete the test site of the parent test process.
  if (!drupal_valid_test_ua()) {
    simpletest_clean_environment();
  }
  // Delete verbose test output and any other testing framework files.
  try {
    \Drupal::service('file_system')->deleteRecursive('public://simpletest');
  }
  catch (FileException $e) {
    // Ignore.
  }

}