class ConfigImportThemeInstallTest

class ConfigImportThemeInstallTest extends KernelTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'system',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->installConfig([
      'system',
    ]);
  }
  
  /**
   * Tests config imports that install and uninstall a theme with dependencies.
   */
  public function testConfigImportWithThemeWithModuleDependencies() {
    $this->container
      ->get('module_installer')
      ->install([
      'test_module_required_by_theme',
      'test_another_module_required_by_theme',
    ]);
    $this->container
      ->get('theme_installer')
      ->install([
      'test_theme_depending_on_modules',
    ]);
    $this->assertTrue($this->container
      ->get('theme_handler')
      ->themeExists('test_theme_depending_on_modules'), 'test_theme_depending_on_modules theme installed');
    $sync = $this->container
      ->get('config.storage.sync');
    $this->copyConfig($this->container
      ->get('config.storage'), $sync);
    $extensions = $sync->read('core.extension');
    // Remove one of the modules the theme depends on.
    unset($extensions['module']['test_module_required_by_theme']);
    $sync->write('core.extension', $extensions);
    try {
      $this->configImporter()
        ->validate();
      $this->fail('ConfigImporterException not thrown; an invalid import was not stopped due to missing dependencies.');
    } catch (ConfigImporterException $e) {
      $error_message = 'Unable to uninstall the <em class="placeholder">Test Module Required by Theme</em> module because: Required by the theme: Test Theme Depending on Modules.';
      $this->assertStringContainsString($error_message, $e->getMessage(), 'There were errors validating the config synchronization.');
      $error_log = $this->configImporter
        ->getErrors();
      $this->assertEquals([
        $error_message,
      ], $error_log);
    }
    // Remove the other module and the theme.
    unset($extensions['module']['test_another_module_required_by_theme']);
    unset($extensions['theme']['test_theme_depending_on_modules']);
    $sync->write('core.extension', $extensions);
    $this->configImporter()
      ->import();
    $this->assertFalse($this->container
      ->get('theme_handler')
      ->themeExists('test_theme_depending_on_modules'), 'test_theme_depending_on_modules theme uninstalled by configuration import');
    // Try installing a theme with dependencies via config import.
    $extensions['theme']['test_theme_depending_on_modules'] = 0;
    $extensions['module']['test_another_module_required_by_theme'] = 0;
    $sync->write('core.extension', $extensions);
    try {
      $this->configImporter()
        ->validate();
      $this->fail('ConfigImporterException not thrown; an invalid import was not stopped due to missing dependencies.');
    } catch (ConfigImporterException $e) {
      $error_message = 'Unable to install the <em class="placeholder">Test Theme Depending on Modules</em> theme since it requires the <em class="placeholder">Test Module Required by Theme</em> module.';
      $this->assertStringContainsString($error_message, $e->getMessage(), 'There were errors validating the config synchronization.');
      $error_log = $this->configImporter
        ->getErrors();
      $this->assertEquals([
        $error_message,
      ], $error_log);
    }
    $extensions['module']['test_module_required_by_theme'] = 0;
    $sync->write('core.extension', $extensions);
    $this->configImporter()
      ->import();
    $this->assertTrue($this->container
      ->get('theme_handler')
      ->themeExists('test_theme_depending_on_modules'), 'test_theme_depending_on_modules theme installed');
  }

}