Migration example

public function testMigrationDependenciesInConstructor(array $dependencies) {

    $configuration = ['migration_dependencies' => $dependencies];
    $plugin_id = 'test_migration';
    $migration_plugin_manager = $this->createMock('\Drupal\migrate\Plugin\MigrationPluginManagerInterface');
    $source_plugin_manager = $this->createMock('\Drupal\migrate\Plugin\MigratePluginManagerInterface');
    $process_plugin_manager = $this->createMock('\Drupal\migrate\Plugin\MigratePluginManagerInterface');
    $destination_plugin_manager = $this->createMock('\Drupal\migrate\Plugin\MigrateDestinationPluginManager');
    $id_map_plugin_manager = $this->createMock('\Drupal\migrate\Plugin\MigratePluginManagerInterface');

    $this->expectDeprecation("Invalid migration dependencies for {$plugin_id} is deprecated in drupal:10.1.0 and will cause an error in drupal:11.0.0. See https://www.drupal.org/node/3266691");
    new Migration($configuration, $plugin_id, [], $migration_plugin_manager, $source_plugin_manager, $process_plugin_manager, $destination_plugin_manager, $id_map_plugin_manager);
  }

  /** * Tests checking requirements for source plugins. * * @covers ::checkRequirements */
  public function testRequirementsForSourcePlugin() {
    $migration = new TestMigration();

    $source_plugin = $this->createMock('Drupal\Tests\migrate\Unit\RequirementsAwareSourceInterface');