function ThemeTest::testUninstallingThemes

Tests uninstalling of themes works.

File

core/modules/system/tests/src/Functional/System/ThemeTest.php, line 482

Class

ThemeTest

Tests the theme administration user interface.

Namespace

Code

public function testUninstallingThemes() : void {
    // Install olivero.
    \Drupal::service('theme_installer')->install([
        'olivero',
    ]);
    // Set up Claro as the admin theme.
    \Drupal::service('theme_installer')->install([
        'claro',
    ]);
    $edit = [
        'admin_theme' => 'claro',
        'use_admin_theme' => TRUE,
    ];
    $this->drupalGet('admin/appearance');
    $this->submitForm($edit, 'Save configuration');
    // Set olivero as the default theme.
    $this->cssSelect('a[title="Set Olivero as default theme"]')[0]
        ->click();
    // Check that claro cannot be uninstalled as it is the admin theme.
    $this->assertSession()
        ->responseNotContains('Uninstall claro theme');
    // Check that olivero cannot be uninstalled as it is the default theme.
    $this->assertSession()
        ->responseNotContains('Uninstall Olivero theme');
    // Install Stark and set it as the default theme.
    \Drupal::service('theme_installer')->install([
        'stark',
    ]);
    $edit = [
        'admin_theme' => 'stark',
        'use_admin_theme' => TRUE,
    ];
    $this->drupalGet('admin/appearance');
    $this->submitForm($edit, 'Save configuration');
    // Check that claro can be uninstalled now.
    $this->assertSession()
        ->responseContains('Uninstall claro theme');
    // Change the default theme to stark, stark is second in the list.
    $this->clickLink('Set as default', 1);
    // Check that olivero can be uninstalled now.
    $this->assertSession()
        ->responseContains('Uninstall Olivero theme');
    // Uninstall each of the two themes starting with Olivero.
    $this->cssSelect('a[title="Uninstall Olivero theme"]')[0]
        ->click();
    $this->assertSession()
        ->responseContains('The <em class="placeholder">Olivero</em> theme has been uninstalled');
    $this->cssSelect('a[title="Uninstall Claro theme"]')[0]
        ->click();
    $this->assertSession()
        ->responseContains('The <em class="placeholder">Claro</em> theme has been uninstalled');
}