ThemeTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\taxonomy\Functional;


/**
 * Verifies that various taxonomy pages use the expected theme.
 *
 * @group taxonomy
 */
class ThemeTest extends TaxonomyTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Make sure we are using distinct default and administrative themes for
        // the duration of these tests.
        \Drupal::service('theme_installer')->install([
            'olivero',
            'claro',
        ]);
        $this->config('system.theme')
            ->set('default', 'olivero')
            ->set('admin', 'claro')
            ->save();
        // Create and log in as a user who has permission to add and edit taxonomy
        // terms and view the administrative theme.
        $admin_user = $this->drupalCreateUser([
            'administer taxonomy',
            'view the administration theme',
        ]);
        $this->drupalLogin($admin_user);
    }
    
    /**
     * Tests the theme used when adding, viewing and editing taxonomy terms.
     */
    public function testTaxonomyTermThemes() : void {
        // Adding a term to a vocabulary is considered an administrative action and
        // should use the administrative theme.
        $vocabulary = $this->createVocabulary();
        $this->drupalGet('admin/structure/taxonomy/manage/' . $vocabulary->id() . '/add');
        // Check that the administrative theme's CSS appears on the page for adding
        // a taxonomy term.
        $this->assertSession()
            ->responseContains('claro/css/base/elements.css');
        // Viewing a taxonomy term should use the default theme.
        $term = $this->createTerm($vocabulary);
        $this->drupalGet('taxonomy/term/' . $term->id());
        // Check that the default theme's CSS appears on the page for viewing
        // a taxonomy term.
        $this->assertSession()
            ->responseContains('olivero/css/base/base.css');
        // Editing a taxonomy term should use the same theme as adding one.
        $this->drupalGet('taxonomy/term/' . $term->id() . '/edit');
        // Check that the administrative theme's CSS appears on the page for editing
        // a taxonomy term.
        $this->assertSession()
            ->responseContains('claro/css/base/elements.css');
    }

}