function MenuRouterTest::doTestThemeCallbackOptionalTheme

Test the theme negotiation when it is set to use an optional theme.

File

core/modules/system/tests/src/Functional/Menu/MenuRouterTest.php, line 300

Class

MenuRouterTest

Tests menu router and default menu link functionality.

Namespace

Code

protected function doTestThemeCallbackOptionalTheme() {
    // Request a theme that is not installed.
    $this->drupalGet('menu-test/theme-callback/use-test-theme');
    $this->assertText('Active theme: bartik. Actual theme: bartik.', 'The theme negotiation system falls back on the default theme when a theme that is not installed is requested.');
    $this->assertRaw('bartik/css/base/elements.css', "The default theme's CSS appears on the page.");
    // Now install the theme and request it again.
    
    /** @var \Drupal\Core\Extension\ThemeInstallerInterface $theme_installer */
    $theme_installer = $this->container
        ->get('theme_installer');
    $theme_installer->install([
        'test_theme',
    ]);
    $this->drupalGet('menu-test/theme-callback/use-test-theme');
    $this->assertText('Active theme: test_theme. Actual theme: test_theme.', 'The theme negotiation system uses an optional theme once it has been installed.');
    $this->assertRaw('test_theme/kitten.css', "The optional theme's CSS appears on the page.");
    $theme_installer->uninstall([
        'test_theme',
    ]);
}