class IteratorTest

class IteratorTest extends MigrateTestCase {
    
    /**
     * The iterator plugin being tested.
     *
     * @var \Drupal\migrate\Plugin\migrate\process\Iterator
     */
    protected $plugin;
    
    /**
     * @var array
     */
    protected $migrationConfiguration = [
        'id' => 'test',
    ];
    
    /**
     * Tests the iterator process plugin.
     *
     * @group legacy
     * @expectedDeprecation The Drupal\migrate\Plugin\migrate\process\Iterator is deprecated in Drupal 8.4.x and will be removed before Drupal 9.0.0. Instead, use Drupal\migrate\Plugin\migrate\process\SubProcess
     */
    public function testIterator() {
        $migration = $this->getMigration();
        // Set up the properties for the iterator.
        $configuration = [
            'process' => [
                'foo' => 'source_foo',
                'id' => 'source_id',
            ],
            'key' => '@id',
        ];
        $plugin = new Iterator($configuration, 'iterator', []);
        // Manually create the plugins. Migration::getProcessPlugins does this
        // normally but the plugin system is not available.
        foreach ($configuration['process'] as $destination => $source) {
            $iterator_plugins[$destination][] = new Get([
                'source' => $source,
            ], 'get', []);
        }
        $migration->expects($this->at(1))
            ->method('getProcessPlugins')
            ->will($this->returnValue($iterator_plugins));
        // Set up the key plugins.
        $key_plugin['key'][] = new Get([
            'source' => '@id',
        ], 'get', []);
        $migration->expects($this->at(2))
            ->method('getProcessPlugins')
            ->will($this->returnValue($key_plugin));
        $event_dispatcher = $this->createMock('Symfony\\Component\\EventDispatcher\\EventDispatcherInterface');
        $migrate_executable = new MigrateExecutable($migration, $this->createMock('Drupal\\migrate\\MigrateMessageInterface'), $event_dispatcher);
        // The current value of the pipeline.
        $current_value = [
            [
                'source_foo' => 'test',
                'source_id' => 42,
            ],
        ];
        // This is not used but the interface requires it, so create an empty row.
        $row = new Row();
        // After transformation, check to make sure that source_foo and source_id's
        // values ended up in the proper destinations, and that the value of the
        // key (@id) is the same as the destination ID (42).
        $new_value = $plugin->transform($current_value, $migrate_executable, $row, 'test');
        $this->assertCount(1, $new_value);
        $this->assertCount(2, $new_value[42]);
        $this->assertSame('test', $new_value[42]['foo']);
        $this->assertSame(42, $new_value[42]['id']);
    }

}