LanguageSwitchingTest.php

<?php

/**
 * @file
 * Definition of Drupal\language\Tests\LanguageSwitchingTest.
 */
namespace Drupal\language\Tests;

use Drupal\Core\Language\Language;
use Drupal\simpletest\WebTestBase;

/**
 * Functional tests for the language switching feature.
 */
class LanguageSwitchingTest extends WebTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = array(
    'language',
    'block',
    'language_test',
  );
  public static function getInfo() {
    return array(
      'name' => 'Language switching',
      'description' => 'Tests for the language switching feature.',
      'group' => 'Language',
    );
  }
  function setUp() {
    parent::setUp();

    // Create and login user.
    $admin_user = $this
      ->drupalCreateUser(array(
      'administer blocks',
      'administer languages',
      'access administration pages',
    ));
    $this
      ->drupalLogin($admin_user);
  }

  /**
   * Functional tests for the language switcher block.
   */
  function testLanguageBlock() {

    // Enable the language switching block.
    $block = $this
      ->drupalPlaceBlock('language_block:' . Language::TYPE_INTERFACE, array(
      'machine_name' => 'test_language_block',
    ));

    // Add language.
    $edit = array(
      'predefined_langcode' => 'fr',
    );
    $this
      ->drupalPost('admin/config/regional/language/add', $edit, t('Add language'));

    // Enable URL language detection and selection.
    $edit = array(
      'language_interface[enabled][language-url]' => '1',
    );
    $this
      ->drupalPost('admin/config/regional/language/detection', $edit, t('Save settings'));

    // Assert that the language switching block is displayed on the frontpage.
    $this
      ->drupalGet('');
    $this
      ->assertText($block
      ->label(), 'Language switcher block found.');

    // Assert that only the current language is marked as active.
    list($language_switcher) = $this
      ->xpath('//div[@id=:id]/div[contains(@class, "content")]', array(
      ':id' => 'block-test-language-block',
    ));
    $links = array(
      'active' => array(),
      'inactive' => array(),
    );
    $anchors = array(
      'active' => array(),
      'inactive' => array(),
    );
    foreach ($language_switcher->ul->li as $link) {
      $classes = explode(" ", (string) $link['class']);
      list($langcode) = array_intersect($classes, array(
        'en',
        'fr',
      ));
      if (in_array('active', $classes)) {
        $links['active'][] = $langcode;
      }
      else {
        $links['inactive'][] = $langcode;
      }
      $anchor_classes = explode(" ", (string) $link->a['class']);
      if (in_array('active', $anchor_classes)) {
        $anchors['active'][] = $langcode;
      }
      else {
        $anchors['inactive'][] = $langcode;
      }
    }
    $this
      ->assertIdentical($links, array(
      'active' => array(
        'en',
      ),
      'inactive' => array(
        'fr',
      ),
    ), 'Only the current language list item is marked as active on the language switcher block.');
    $this
      ->assertIdentical($anchors, array(
      'active' => array(
        'en',
      ),
      'inactive' => array(
        'fr',
      ),
    ), 'Only the current language anchor is marked as active on the language switcher block.');
  }

  /**
   * Test active class on links when switching languages.
   */
  function testLanguageLinkActiveClass() {

    // Add language.
    $edit = array(
      'predefined_langcode' => 'fr',
    );
    $this
      ->drupalPost('admin/config/regional/language/add', $edit, t('Add language'));

    // Enable URL language detection and selection.
    $edit = array(
      'language_interface[enabled][language-url]' => '1',
    );
    $this
      ->drupalPost('admin/config/regional/language/detection', $edit, t('Save settings'));
    $function_name = 'l()';

    // Test links generated by l() on an English page.
    $current_language = 'English';
    $this
      ->drupalGet('language_test/l-active-class');

    // Language code 'none' link should be active.
    $langcode = 'none';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'no_lang_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'en' link should be active.
    $langcode = 'en';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'en_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'fr' link should not be active.
    $langcode = 'fr';
    $links = $this
      ->xpath('//a[@id = :id and not(contains(@class, :class))]', array(
      ':id' => 'fr_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is NOT marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Test links generated by l() on a French page.
    $current_language = 'French';
    $this
      ->drupalGet('fr/language_test/l-active-class');

    // Language code 'none' link should be active.
    $langcode = 'none';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'no_lang_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'en' link should not be active.
    $langcode = 'en';
    $links = $this
      ->xpath('//a[@id = :id and not(contains(@class, :class))]', array(
      ':id' => 'en_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is NOT marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'fr' link should be active.
    $langcode = 'fr';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'fr_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));
    $function_name = "theme('link')";

    // Test links generated by theme('link') on an English page.
    $current_language = 'English';
    $this
      ->drupalGet('language_test/theme-link-active-class');

    // Language code 'none' link should be active.
    $langcode = 'none';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'no_lang_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'en' link should be active.
    $langcode = 'en';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'en_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'fr' link should not be active.
    $langcode = 'fr';
    $links = $this
      ->xpath('//a[@id = :id and not(contains(@class, :class))]', array(
      ':id' => 'fr_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is NOT marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Test links generated by theme('link') on a French page.
    $current_language = 'French';
    $this
      ->drupalGet('fr/language_test/theme-link-active-class');

    // Language code 'none' link should be active.
    $langcode = 'none';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'no_lang_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'en' link should not be active.
    $langcode = 'en';
    $links = $this
      ->xpath('//a[@id = :id and not(contains(@class, :class))]', array(
      ':id' => 'en_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is NOT marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));

    // Language code 'fr' link should be active.
    $langcode = 'fr';
    $links = $this
      ->xpath('//a[@id = :id and contains(@class, :class)]', array(
      ':id' => 'fr_link',
      ':class' => 'active',
    ));
    $this
      ->assertTrue(isset($links[0]), t('A link generated by :function to the current :language page with langcode :langcode is marked active.', array(
      ':function' => $function_name,
      ':language' => $current_language,
      ':langcode' => $langcode,
    )));
  }

}