LanguagePathMonolingualTest.php

<?php

declare (strict_types=1);
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 {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'block',
        'language',
        'path',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        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->drupalGet('admin/config/regional/language/add');
        $this->submitForm($edit, 'Add language');
        // Make French the default language.
        $edit = [
            'site_default_language' => 'fr',
        ];
        $this->drupalGet('admin/config/regional/language');
        $this->submitForm($edit, 'Save configuration');
        // Delete English.
        $this->drupalGet('admin/config/regional/language/delete/en');
        $this->submitForm([], '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->assertEquals('fr', \Drupal::languageManager()->getDefaultLanguage()
            ->getId(), 'French is the default language');
        // Set language detection to URL.
        $edit = [
            'language_interface[enabled][language-url]' => TRUE,
        ];
        $this->drupalGet('admin/config/regional/language/detection');
        $this->submitForm($edit, 'Save settings');
        $this->drupalPlaceBlock('local_actions_block');
    }
    
    /**
     * Verifies that links do not have language prefixes in them.
     */
    public function testPageLinks() : void {
        // Navigate to 'admin/config' path.
        $this->drupalGet('admin/config');
        // Verify that links in this page do not have a 'fr/' prefix.
        $this->assertSession()
            ->linkByHrefNotExists('/fr/', 'Links do not contain language prefix');
        // Verify that links in this page can be followed and work.
        $this->clickLink('Languages');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Add language');
    }

}