function ConfigSnapshotTest::testSnapshot

Tests config snapshot creation and updating.

File

core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php, line 37

Class

ConfigSnapshotTest

Tests config snapshot creation and updating.

Namespace

Code

public function testSnapshot() {
    $active = $this->container
        ->get('config.storage');
    $sync = $this->container
        ->get('config.storage.sync');
    $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);
    $sync_snapshot_comparer = new StorageComparer($sync, $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.
    $this->installConfig([
        'config_test',
    ]);
    // Although we have imported config this has not affected the snapshot.
    $this->assertTrue($active_snapshot_comparer->reset()
        ->hasChanges());
    // Update the config snapshot.
    \Drupal::service('config.manager')->createSnapshot($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 sync.
    $sync_data = $this->config($config_name)
        ->get();
    $sync_data[$config_key] = $new_data;
    $sync->write($config_name, $sync_data);
    // Verify that active and snapshot match, and that sync doesn't match
    // active.
    $this->assertFalse($active_snapshot_comparer->reset()
        ->hasChanges());
    $this->assertTrue($sync_snapshot_comparer->createChangelist()
        ->hasChanges());
    // Import changed data from sync to active.
    $this->configImporter()
        ->import();
    // Verify changed config was properly imported.
    \Drupal::configFactory()->reset($config_name);
    $this->assertIdentical($this->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());
}