class ConfigImporterTest

class ConfigImporterTest extends DrupalUnitTestBase {

  /**
   * Config Importer object used for testing.
   *
   * @var \Drupal\Core\Config\ConfigImporter
   */
  protected $configImporter;

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = array(
    'config_test',
    'system',
  );
  public static function getInfo() {
    return array(
      'name' => 'Import configuration',
      'description' => 'Tests importing configuration from files into active configuration.',
      'group' => 'Configuration',
    );
  }
  function setUp() {
    parent::setUp();
    $this
      ->installSchema('system', 'config_snapshot');
    config_install_default_config('module', 'config_test');

    // Installing config_test's default configuration pollutes the global
    // variable being used for recording hook invocations by this test already,
    // so it has to be cleared out manually.
    unset($GLOBALS['hook_config_test']);

    // Set up the ConfigImporter object for testing.
    $config_comparer = new StorageComparer($this->container
      ->get('config.storage.staging'), $this->container
      ->get('config.storage'));
    $this->configImporter = new ConfigImporter($config_comparer
      ->createChangelist(), $this->container
      ->get('event_dispatcher'), $this->container
      ->get('config.factory'), $this->container
      ->get('plugin.manager.entity'), $this->container
      ->get('lock'));
    $this
      ->copyConfig($this->container
      ->get('config.storage'), $this->container
      ->get('config.storage.staging'));
  }

  /**
   * Tests omission of module APIs for bare configuration operations.
   */
  function testNoImport() {
    $dynamic_name = 'config_test.dynamic.dotted.default';

    // Verify the default configuration values exist.
    $config = config($dynamic_name);
    $this
      ->assertIdentical($config
      ->get('id'), 'dotted.default');

    // Verify that a bare config() does not involve module APIs.
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']));
  }

  /**
   * Tests that trying to import from an empty staging configuration directory
   * fails.
   */
  function testEmptyImportFails() {
    try {
      $this->container
        ->get('config.storage.staging')
        ->deleteAll();
      $this->configImporter
        ->reset()
        ->import();
      $this
        ->assertFalse(FALSE, "ConfigImporterException not thrown, we didn't stop an empty import.");
    } catch (ConfigImporterException $e) {
      $this
        ->assertTrue(TRUE, 'ConfigImporterException thrown, successfully stopping an empty import.');
    }
  }

  /**
   * Tests deletion of configuration during import.
   */
  function testDeleted() {
    $dynamic_name = 'config_test.dynamic.dotted.default';
    $storage = $this->container
      ->get('config.storage');
    $staging = $this->container
      ->get('config.storage.staging');

    // Verify the default configuration values exist.
    $config = config($dynamic_name);
    $this
      ->assertIdentical($config
      ->get('id'), 'dotted.default');

    // Delete the file from the staging directory.
    $staging
      ->delete($dynamic_name);

    // Import.
    $this->configImporter
      ->reset()
      ->import();

    // Verify the file has been removed.
    $this
      ->assertIdentical($storage
      ->read($dynamic_name), FALSE);
    $config = config($dynamic_name);
    $this
      ->assertIdentical($config
      ->get('id'), NULL);

    // Verify that appropriate module API hooks have been invoked.
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['load']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['presave']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['insert']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['update']));
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['predelete']));
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['delete']));

    // Verify that there is nothing more to import.
    $this
      ->assertFalse($this->configImporter
      ->hasUnprocessedChanges());
  }

  /**
   * Tests creation of configuration during import.
   */
  function testNew() {
    $dynamic_name = 'config_test.dynamic.new';
    $storage = $this->container
      ->get('config.storage');
    $staging = $this->container
      ->get('config.storage.staging');

    // Verify the configuration to create does not exist yet.
    $this
      ->assertIdentical($storage
      ->exists($dynamic_name), FALSE, $dynamic_name . ' not found.');

    // Create new config entity.
    $original_dynamic_data = array(
      'id' => 'new',
      'uuid' => '30df59bd-7b03-4cf7-bb35-d42fc49f0651',
      'label' => 'New',
      'weight' => '0',
      'style' => '',
      'status' => '1',
      'langcode' => language_default()->langcode,
      'protected_property' => '',
    );
    $staging
      ->write($dynamic_name, $original_dynamic_data);
    $this
      ->assertIdentical($staging
      ->exists($dynamic_name), TRUE, $dynamic_name . ' found.');

    // Import.
    $this->configImporter
      ->reset()
      ->import();

    // Verify the values appeared.
    $config = config($dynamic_name);
    $this
      ->assertIdentical($config
      ->get('label'), $original_dynamic_data['label']);

    // Verify that appropriate module API hooks have been invoked.
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['load']));
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['presave']));
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['insert']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['update']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['predelete']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['delete']));

    // Verify that there is nothing more to import.
    $this
      ->assertFalse($this->configImporter
      ->hasUnprocessedChanges());
  }

  /**
   * Tests updating of configuration during import.
   */
  function testUpdated() {
    $name = 'config_test.system';
    $dynamic_name = 'config_test.dynamic.dotted.default';
    $storage = $this->container
      ->get('config.storage');
    $staging = $this->container
      ->get('config.storage.staging');

    // Verify that the configuration objects to import exist.
    $this
      ->assertIdentical($storage
      ->exists($name), TRUE, $name . ' found.');
    $this
      ->assertIdentical($storage
      ->exists($dynamic_name), TRUE, $dynamic_name . ' found.');

    // Replace the file content of the existing configuration objects in the
    // staging directory.
    $original_name_data = array(
      'foo' => 'beer',
    );
    $staging
      ->write($name, $original_name_data);
    $original_dynamic_data = $storage
      ->read($dynamic_name);
    $original_dynamic_data['label'] = 'Updated';
    $staging
      ->write($dynamic_name, $original_dynamic_data);

    // Verify the active configuration still returns the default values.
    $config = config($name);
    $this
      ->assertIdentical($config
      ->get('foo'), 'bar');
    $config = config($dynamic_name);
    $this
      ->assertIdentical($config
      ->get('label'), 'Default');

    // Import.
    $this->configImporter
      ->reset()
      ->import();

    // Verify the values were updated.
    $config = config($name);
    $this
      ->assertIdentical($config
      ->get('foo'), 'beer');
    $config = config($dynamic_name);
    $this
      ->assertIdentical($config
      ->get('label'), 'Updated');

    // Verify that the original file content is still the same.
    $this
      ->assertIdentical($staging
      ->read($name), $original_name_data);
    $this
      ->assertIdentical($staging
      ->read($dynamic_name), $original_dynamic_data);

    // Verify that appropriate module API hooks have been invoked.
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['load']));
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['presave']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['insert']));
    $this
      ->assertTrue(isset($GLOBALS['hook_config_test']['update']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['predelete']));
    $this
      ->assertFalse(isset($GLOBALS['hook_config_test']['delete']));

    // Verify that there is nothing more to import.
    $this
      ->assertFalse($this->configImporter
      ->hasUnprocessedChanges());
  }

}