function ThemeInstallerTest::testInstallNonExisting

Tests installing a non-existing theme.

File

core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php, line 119

Class

ThemeInstallerTest

Tests installing and uninstalling of themes.

Namespace

Code

public function testInstallNonExisting() : void {
  $name = 'non_existing_theme';
  $themes = $this->themeHandler()
    ->listInfo();
  $this->assertEmpty(array_keys($themes));
  try {
    $message = 'ThemeInstaller::install() throws UnknownExtensionException upon installing a non-existing theme.';
    $this->themeInstaller()
      ->install([
      $name,
    ]);
    $this->fail($message);
  } catch (\Exception $e) {
    $this->assertInstanceOf(UnknownExtensionException::class, $e);
  }
  $themes = $this->themeHandler()
    ->listInfo();
  $this->assertEmpty(array_keys($themes));
}