drupal/modules/system/system.test

<?php
// $Id$

class EnableDisableCoreTestCase extends DrupalWebTestCase {
  /**
   * Implementation of getInfo().
   */
  function getInfo() {
    return array(
      'name' => t('Module list functionality'),
      'description' => t('Enable/disable core module and confirm table creation/deletion. Enable module without dependecy enabled.'),
      'group' => t('System')
    );
  }

  /**
   * Implementation of setUp().
   */
  function setUp() {
    parent::setUp();

    $admin_user = $this->drupalCreateUser(array('access administration pages', 'administer site configuration'));
    $this->drupalLogin($admin_user);
  }

  /**
   * Enable a module, check the database for related tables, disable module,
   * check for related tables, unistall module, check for related tables.
   */
  function testEnableDisable() {
    $admin_user = $this->drupalCreateUser(array('access administration pages', 'administer site configuration'));
    $this->drupalLogin($admin_user);

    // Enable aggregator, and check tables.
    $this->assertModules(array('aggregator'), FALSE);
    $this->assertTableCount('aggregator', FALSE);

    $edit = array();
    $edit['status[aggregator]'] = 'aggregator';
    $this->drupalPost('admin/build/modules', $edit, t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));

    $this->assertModules(array('aggregator'), TRUE);
    $this->assertTableCount('aggregator', TRUE);

    // Disable aggregator, check tables, uninstall aggregator, check tables.
    $edit = array();
    $edit['status[aggregator]'] = FALSE;
    $this->drupalPost('admin/build/modules', $edit, t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));

    $this->assertModules(array('aggregator'), FALSE);
    $this->assertTableCount('aggregator', TRUE);

    $edit = array();
    $edit['uninstall[aggregator]'] = 'aggregator';
    $this->drupalPost('admin/build/modules/uninstall', $edit, t('Uninstall'));

    $this->drupalPost(NULL, NULL, t('Uninstall'));
    $this->assertText(t('The selected modules have been uninstalled.'), t('Modules status has been updated.'));

    $this->assertModules(array('aggregator'), FALSE);
    $this->assertTableCount('aggregator', FALSE);
  }

  /**
   * Attempt to enable translation module without locale enabled.
   */
  function testEnableWithoutDependency () {
    $admin_user = $this->drupalCreateUser(array('access administration pages', 'administer site configuration'));
    $this->drupalLogin($admin_user);

    // Attempt to enable content translation without locale enabled.
    $edit = array();
    $edit['status[translation]'] = 'translation';
    $this->drupalPost('admin/build/modules', $edit, t('Save configuration'));
    $this->assertText(t('Some required modules must be enabled'), t('Dependecy required.'));

    $this->assertModules(array('translation', 'locale'), FALSE);

    // Assert that the locale tables weren't enabled.
    $this->assertTableCount('languages', FALSE);
    $this->assertTableCount('locale', FALSE);

    $this->drupalPost(NULL, NULL, t('Continue'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));

    $this->assertModules(array('translation', 'locale'), TRUE);

    // Assert that the locale tables were enabled.
    $this->assertTableCount('languages', TRUE);
    $this->assertTableCount('locale', TRUE);
  }

  /**
   * Assert tables that begin with the specified base table name.
   *
   * @param string $base_table Begginning of table name to look for.
   * @param boolean $count Assert tables that match specified base table.
   * @return boolean Tables with specified base table.
   */
  function assertTableCount($base_table, $count) {
    $match_count = simpletest_get_like_tables($base_table, TRUE);

    if ($count) {
      return $this->assertTrue($match_count, t('Tables matching "@base_table" found.', array('@base_table' => $base_table)));
    }
    return $this->assertFalse($match_count, t('Tables matching "@base_table" not found.', array('@base_table' => $base_table)));
  }

  /**
   * Assert the list of modules are enabled or disabled.
   *
   * @param array $modules Modules to check.
   * @param boolean $enabled Module state.
   */
  function assertModules(array $modules, $enabled) {
    module_list(TRUE, FALSE);
    foreach ($modules as $module) {
      if ($enabled) {
        $this->assertTrue(module_exists($module) == $enabled, t('Module "@module" is enabled.', array('@module' => $module)));
      }
      else {
        $this->assertTrue(module_exists($module) == $enabled, t('Module "@module" not enabled.', array('@module' => $module)));
      }
    }
  }
}