ExperimentalThemeTest.php

<?php

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

use Drupal\Tests\BrowserTestBase;

/**
 * Tests the installation of experimental themes.
 *
 * @group Theme
 */
class ExperimentalThemeTest extends BrowserTestBase {
    
    /**
     * The admin user.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->adminUser = $this->drupalCreateUser([
            'access administration pages',
            'administer themes',
        ]);
        $this->drupalLogin($this->adminUser);
    }
    
    /**
     * Tests installing experimental themes and dependencies in the UI.
     */
    public function testExperimentalConfirmForm() : void {
        // Only experimental themes should be marked as such with a parenthetical.
        $this->drupalGet('admin/appearance');
        $this->assertSession()
            ->responseContains(sprintf('Experimental test %s                (experimental theme)', \Drupal::VERSION));
        $this->assertSession()
            ->responseContains(sprintf('Experimental dependency test %s', \Drupal::VERSION));
        // First, test installing a non-experimental theme with no dependencies.
        // There should be no confirmation form and no experimental theme warning.
        $this->cssSelect('a[title="Install <strong>Test theme</strong> theme"]')[0]
            ->click();
        $this->assertSession()
            ->pageTextContains('The <strong>Test theme</strong> theme has been installed.');
        $this->assertSession()
            ->pageTextNotContains('Experimental modules are provided for testing purposes only.');
        // Next, test installing an experimental theme with no dependencies.
        // There should be a confirmation form with an experimental warning, but no
        // list of dependencies.
        $this->drupalGet('admin/appearance');
        $this->cssSelect('a[title="Install Experimental test theme"]')[0]
            ->click();
        $this->assertSession()
            ->pageTextContains('Experimental themes are provided for testing purposes only. Use at your own risk.');
        // The module should not be enabled and there should be a warning and a
        // list of the experimental modules with only this one.
        $this->assertSession()
            ->pageTextNotContains('The Experimental test theme has been installed.');
        $this->assertSession()
            ->pageTextContains('Experimental themes are provided for testing purposes only.');
        // There should be no message about enabling dependencies.
        $this->assertSession()
            ->pageTextNotContains('You must enable');
        // Enable the theme and confirm that it worked.
        $this->submitForm([], 'Continue');
        $this->assertSession()
            ->pageTextContains('The Experimental test theme has been installed.');
        // Setting it as the default should not ask for another confirmation.
        $this->cssSelect('a[title="Set Experimental test as default theme"]')[0]
            ->click();
        $this->assertSession()
            ->pageTextNotContains('Experimental themes are provided for testing purposes only. Use at your own risk.');
        $this->assertSession()
            ->pageTextContains('Experimental test is now the default theme.');
        $this->assertSession()
            ->pageTextNotContains(sprintf('Experimental test %s                (experimental theme)', \Drupal::VERSION));
        $this->assertSession()
            ->responseContains(sprintf('Experimental test %s                (default theme, administration theme, experimental theme)', \Drupal::VERSION));
        // Uninstall the theme.
        $this->config('system.theme')
            ->set('default', 'test_theme')
            ->save();
        \Drupal::service('theme_handler')->refreshInfo();
        \Drupal::service('theme_installer')->uninstall([
            'experimental_theme_test',
        ]);
        // Reinstall the same experimental theme, but this time immediately set it
        // as the default. This should again trigger a confirmation form with an
        // experimental warning.
        $this->drupalGet('admin/appearance');
        $this->cssSelect('a[title="Install Experimental test as default theme"]')[0]
            ->click();
        $this->assertSession()
            ->pageTextContains('Experimental themes are provided for testing purposes only. Use at your own risk.');
        // Test enabling a theme that is not itself experimental, but that depends
        // on an experimental module.
        $this->drupalGet('admin/appearance');
        $this->cssSelect('a[title="Install Experimental dependency test theme"]')[0]
            ->click();
        // The theme should not be enabled and there should be a warning and a
        // list of the experimental modules with only this one.
        $this->assertSession()
            ->pageTextNotContains('The Experimental dependency test theme has been installed.');
        $this->assertSession()
            ->pageTextContains('Experimental themes are provided for testing purposes only. Use at your own risk.');
        $this->assertSession()
            ->pageTextContains('The following themes are experimental: Experimental test');
        // Ensure the non-experimental theme is not listed as experimental.
        $this->assertSession()
            ->pageTextNotContains('The following themes are experimental: Experimental test, Experimental dependency test');
        $this->assertSession()
            ->pageTextNotContains('The following themes are experimental: Experimental dependency test');
        // There should be a message about enabling dependencies.
        $this->assertSession()
            ->pageTextContains('You must install the Experimental test theme to install Experimental dependency test');
        // Enable the theme and confirm that it worked.
        $this->submitForm([], 'Continue');
        $this->assertSession()
            ->pageTextContains('The Experimental dependency test theme has been installed.');
        $this->assertSession()
            ->responseContains(sprintf('Experimental test %s                (experimental theme)', \Drupal::VERSION));
        $this->assertSession()
            ->responseContains(sprintf('Experimental dependency test %s', \Drupal::VERSION));
        // Setting it as the default should not ask for another confirmation.
        $this->cssSelect('a[title="Set Experimental dependency test as default theme"]')[0]
            ->click();
        $this->assertSession()
            ->pageTextNotContains('Experimental themes are provided for testing purposes only. Use at your own risk.');
        $this->assertSession()
            ->pageTextContains('Experimental dependency test is now the default theme.');
        $this->assertSession()
            ->responseContains(sprintf('Experimental test %s                (experimental theme)', \Drupal::VERSION));
        $this->assertSession()
            ->responseContains(sprintf('Experimental dependency test %s                (default theme, administration theme)', \Drupal::VERSION));
        // Uninstall the theme.
        $this->config('system.theme')
            ->set('default', 'test_theme')
            ->save();
        \Drupal::service('theme_handler')->refreshInfo();
        \Drupal::service('theme_installer')->uninstall([
            'experimental_theme_test',
            'experimental_theme_dependency_test',
        ]);
        // Reinstall the same theme, but this time immediately set it as the
        // default. This should again trigger a confirmation form with an
        // experimental warning for its dependency.
        $this->drupalGet('admin/appearance');
        $this->cssSelect('a[title="Install Experimental dependency test as default theme"]')[0]
            ->click();
        $this->assertSession()
            ->pageTextContains('Experimental themes are provided for testing purposes only. Use at your own risk.');
    }

}