function ThemeTest::testUninstallingThemes

Tests uninstalling of themes works.

File

core/modules/system/tests/src/Functional/System/ThemeTest.php, line 480

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');
}