system_test.module in Drupal 9

Test module.

File

core/modules/system/tests/modules/system_test/system_test.module

<?php

/**
 * @file
 * Test module.
 */
use Drupal\Core\Extension\Extension;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function system_test_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.system_test':
      $output = '';
      $output .= '<h3>' . t('Test Help Page') . '</h3>';
      $output .= '<p>' . t('This is a test help page for the system_test module for the purpose of testing if the "Help" link displays properly.') . '</p>';
      return $output;
  }
}

/**
 * Implements hook_modules_installed().
 */
function system_test_modules_installed($modules) {
  if (\Drupal::state()
    ->get('system_test.verbose_module_hooks')) {
    foreach ($modules as $module) {
      \Drupal::messenger()
        ->addStatus(t('hook_modules_installed fired for @module', [
        '@module' => $module,
      ]));
    }
  }
}

/**
 * Implements hook_modules_uninstalled().
 */
function system_test_modules_uninstalled($modules) {
  if (\Drupal::state()
    ->get('system_test.verbose_module_hooks')) {
    foreach ($modules as $module) {
      \Drupal::messenger()
        ->addStatus(t('hook_modules_uninstalled fired for @module', [
        '@module' => $module,
      ]));
    }
  }
}

/**
 * Implements hook_system_info_alter().
 */
function system_test_system_info_alter(&$info, Extension $file, $type) {

  // We need a static otherwise the last test will fail to alter common_test.
  static $test;
  if (($dependencies = \Drupal::state()
    ->get('system_test.dependencies')) || $test) {
    if ($file
      ->getName() == 'module_test') {
      $info['hidden'] = FALSE;
      $info['dependencies'][] = array_shift($dependencies);
      \Drupal::state()
        ->set('system_test.dependencies', $dependencies);
      $test = TRUE;
    }
    if ($file
      ->getName() == 'common_test') {
      $info['hidden'] = FALSE;
      $info['version'] = '8.x-2.4-beta3';
    }
  }

  // Make the system_dependencies_test visible by default.
  if ($file
    ->getName() == 'system_dependencies_test') {
    $info['hidden'] = FALSE;
  }
  if (in_array($file
    ->getName(), [
    'system_incompatible_module_version_dependencies_test',
    'system_incompatible_core_version_dependencies_test',
    'system_incompatible_module_version_test',
  ])) {
    $info['hidden'] = FALSE;
  }
  if ($file
    ->getName() == 'requirements1_test' || $file
    ->getName() == 'requirements2_test') {
    $info['hidden'] = FALSE;
  }
  if ($file
    ->getName() == 'system_test') {
    $info['hidden'] = \Drupal::state()
      ->get('system_test.module_hidden', TRUE);
  }
}

/**
 * Implements hook_page_attachments().
 */
function system_test_page_attachments(array &$page) {

  // Used by FrontPageTestCase to get the results of
  // \Drupal::service('path.matcher')->isFrontPage().
  $frontpage = \Drupal::state()
    ->get('system_test.front_page_output', 0);
  if ($frontpage && \Drupal::service('path.matcher')
    ->isFrontPage()) {
    \Drupal::messenger()
      ->addStatus(t('On front page.'));
  }
}

/**
 * Dummy shutdown function which registers another shutdown function.
 */
function _system_test_first_shutdown_function($arg1, $arg2) {

  // Set something to ensure that this function got called.
  \Drupal::state()
    ->set('_system_test_first_shutdown_function', [
    $arg1,
    $arg2,
  ]);
  drupal_register_shutdown_function('_system_test_second_shutdown_function', $arg1, $arg2);
}

/**
 * Dummy shutdown function.
 */
function _system_test_second_shutdown_function($arg1, $arg2) {

  // Set something to ensure that this function got called.
  \Drupal::state()
    ->set('_system_test_second_shutdown_function', [
    $arg1,
    $arg2,
  ]);

  // Throw an exception with an HTML tag. Since this is called in a shutdown
  // function, it will not bubble up to the default exception handler but will
  // be caught in _drupal_shutdown_function() and be displayed through
  // \Drupal\Core\Utility\Error::renderExceptionSafe() if possible.
  throw new Exception('Drupal is <blink>awesome</blink>.');
}

/**
 * Implements hook_filetransfer_info().
 */
function system_test_filetransfer_info() {
  return [
    'system_test' => [
      'title' => t('System Test FileTransfer'),
      'class' => 'Drupal\\system_test\\MockFileTransfer',
      'weight' => -10,
    ],
  ];
}

/**
 * Implements hook_module_preinstall().
 */
function system_test_module_preinstall($module) {
  \Drupal::messenger()
    ->addStatus('system_test_preinstall_module called');
  \Drupal::state()
    ->set('system_test_preinstall_module', $module);
}

/**
 * Implements hook_module_preuninstall().
 */
function system_test_module_preuninstall($module) {
  \Drupal::state()
    ->set('system_test_preuninstall_module', $module);
}

Functions

Name	Description
system_test_filetransfer_info	Implements hook_filetransfer_info().
system_test_help	Implements hook_help().
system_test_modules_installed	Implements hook_modules_installed().
system_test_modules_uninstalled	Implements hook_modules_uninstalled().
system_test_module_preinstall	Implements hook_module_preinstall().
system_test_module_preuninstall	Implements hook_module_preuninstall().
system_test_page_attachments	Implements hook_page_attachments().
system_test_system_info_alter	Implements hook_system_info_alter().
_system_test_first_shutdown_function	Dummy shutdown function which registers another shutdown function.
_system_test_second_shutdown_function	Dummy shutdown function.