LanguagePathMonolingualTest.php

<?php

namespace Drupal\Tests\language\Functional;

use Drupal\Tests\BrowserTestBase;

/**
 * Confirm that paths are not changed on monolingual non-English sites.
 *
 * @group language
 */
class LanguagePathMonolingualTest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    public static $modules = [
        'block',
        'language',
        'path',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    protected function setUp() {
        parent::setUp();
        // Create and log in user.
        $web_user = $this->drupalCreateUser([
            'administer languages',
            'access administration pages',
            'administer site configuration',
        ]);
        $this->drupalLogin($web_user);
        // Enable French language.
        $edit = [];
        $edit['predefined_langcode'] = 'fr';
        $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add language'));
        // Make French the default language.
        $edit = [
            'site_default_language' => 'fr',
        ];
        $this->drupalPostForm('admin/config/regional/language', $edit, t('Save configuration'));
        // Delete English.
        $this->drupalPostForm('admin/config/regional/language/delete/en', [], t('Delete'));
        // Changing the default language causes a container rebuild. Therefore need
        // to rebuild the container in the test environment.
        $this->rebuildContainer();
        // Verify that French is the only language.
        $this->container
            ->get('language_manager')
            ->reset();
        $this->assertFalse(\Drupal::languageManager()->isMultilingual(), 'Site is mono-lingual');
        $this->assertEqual(\Drupal::languageManager()->getDefaultLanguage()
            ->getId(), 'fr', 'French is the default language');
        // Set language detection to URL.
        $edit = [
            'language_interface[enabled][language-url]' => TRUE,
        ];
        $this->drupalPostForm('admin/config/regional/language/detection', $edit, t('Save settings'));
        $this->drupalPlaceBlock('local_actions_block');
    }
    
    /**
     * Verifies that links do not have language prefixes in them.
     */
    public function testPageLinks() {
        // Navigate to 'admin/config' path.
        $this->drupalGet('admin/config');
        // Verify that links in this page do not have a 'fr/' prefix.
        $this->assertNoLinkByHref('/fr/', 'Links do not contain language prefix');
        // Verify that links in this page can be followed and work.
        $this->clickLink(t('Languages'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertText(t('Add language'), 'Page contains the add language text');
    }

}