function ConfigSnapshotTest::testSnapshot

Tests config snapshot creation and updating.

File

drupal/core/modules/config/lib/Drupal/config/Tests/ConfigSnapshotTest.php, line 41

Contains \Drupal\config\Tests\ConfigSnapshotTest.

Class

ConfigSnapshotTest

Tests config snapshot creation and updating.

Namespace

Code

function testSnapshot() {
  $active = $this->container
    ->get('config.storage');
  $staging = $this->container
    ->get('config.storage.staging');
  $snapshot = $this->container
    ->get('config.storage.snapshot');
  $config_name = 'config_test.system';
  $config_key = 'foo';
  $new_data = 'foobar';
  $active_snapshot_comparer = new StorageComparer($active, $snapshot);
  $staging_snapshot_comparer = new StorageComparer($staging, $snapshot);

  // Verify that we have an initial snapshot that matches the active
  // configuration. This has to be true as no config should be installed.
  $this
    ->assertFalse($active_snapshot_comparer
    ->createChangelist()
    ->hasChanges());

  // Install the default config.
  config_install_default_config('module', 'config_test');

  // Although we have imported config this has not affected the snapshot.
  $this
    ->assertTrue($active_snapshot_comparer
    ->reset()
    ->hasChanges());

  // Update the config snapshot.
  config_import_create_snapshot($active, $snapshot);

  // The snapshot and active config should now contain the same config
  // objects.
  $this
    ->assertFalse($active_snapshot_comparer
    ->reset()
    ->hasChanges());

  // Change a configuration value in staging.
  $staging_data = config($config_name)
    ->get();
  $staging_data[$config_key] = $new_data;
  $staging
    ->write($config_name, $staging_data);

  // Verify that active and snapshot match, and that staging doesn't match
  // active.
  $this
    ->assertFalse($active_snapshot_comparer
    ->reset()
    ->hasChanges());
  $this
    ->assertTrue($staging_snapshot_comparer
    ->createChangelist()
    ->hasChanges());

  // Import changed data from staging to active.
  $this
    ->configImporter()
    ->import();

  // Verify changed config was properly imported.
  $this
    ->assertIdentical(config($config_name)
    ->get($config_key), $new_data);

  // Verify that a new snapshot was created which and that it matches
  // the active config.
  $this
    ->assertFalse($active_snapshot_comparer
    ->reset()
    ->hasChanges());
}