edlp_d8/core/modules/config_translation/tests/modules/config_translation_test/config_translation_test.module

<?php

/**
 * @file
 * Configuration Translation Test module.
 */

use Drupal\Core\Extension\Extension;
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_system_info_alter().
 */
function config_translation_test_system_info_alter(array &$info, Extension $file, $type) {
  // @see \Drupal\config_translation\Tests\ConfigTranslationUiThemeTest
  if ($file->getType() == 'theme' && $file->getName() == 'config_translation_test_theme') {
    $info['hidden'] = FALSE;
  }
}

/**
 * Implements hook_entity_type_alter().
 */
function config_translation_test_entity_type_alter(array &$entity_types) {
  // Remove entity definition for these entity types from config_test module.
  unset($entity_types['config_test_no_status']);
  unset($entity_types['config_query_test']);
}

/**
 * Implements hook_config_translation_info_alter().
 */
function config_translation_test_config_translation_info_alter(&$info) {
  if (\Drupal::state()->get('config_translation_test_config_translation_info_alter')) {
    // Limit account settings config files to only one of them.
    $info['entity.user.admin_form']['names'] = ['user.settings'];

    // Add one more config file to the site information page.
    $info['system.site_information_settings']['names'][] = 'system.rss';
  }
}

/**
 * Implements hook_form_BASE_FORM_ID_alter() for ConfigTranslationFormBase.
 *
 * Adds a list of configuration names to the top of the configuration
 * translation form.
 *
 * @see \Drupal\config_translation\Form\ConfigTranslationFormBase
 */
function config_translation_test_form_config_translation_form_alter(&$form, FormStateInterface $form_state) {
  if (\Drupal::state()->get('config_translation_test_alter_form_alter')) {
    $form['#base_altered'] = TRUE;
  }
}

/**
 * Implements hook_form_FORM_ID_alter() for ConfigTranslationAddForm.
 *
 * Changes the title to include the source language.
 *
 * @see \Drupal\config_translation\Form\ConfigTranslationAddForm
 */
function config_translation_test_form_config_translation_add_form_alter(&$form, FormStateInterface $form_state) {
  if (\Drupal::state()->get('config_translation_test_alter_form_alter')) {
    $form['#altered'] = TRUE;
  }
}

/**
 * Implements hook_form_FORM_ID_alter() for ConfigTranslationEditForm.
 *
 * Adds a column to the configuration translation edit form that shows the
 * current translation. Note that this column would not be displayed by default,
 * as the columns are hardcoded in
 * config_translation_manage_form_element.html.twig. The template would need to
 * be overridden for the column to be displayed.
 *
 * @see \Drupal\config_translation\Form\ConfigTranslationEditForm
 */
function config_translation_test_form_config_translation_edit_form_alter(&$form, FormStateInterface $form_state) {
  if (\Drupal::state()->get('config_translation_test_alter_form_alter')) {
    $form['#altered'] = TRUE;
  }
}