function ThemeInstallerTest::testInstallNonExisting

Tests installing a non-existing theme.

File

core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php, line 118

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));
}