class MigrationTest

class MigrationTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'migrate',
    'migrate_expected_migrations_test',
  ];
  
  /**
   * Tests Migration::getProcessPlugins()
   */
  public function testGetProcessPlugins() : void {
    $migration = \Drupal::service('plugin.manager.migration')->createStubMigration([]);
    $this->assertEquals([], $migration->getProcessPlugins([]));
  }
  
  /**
   * Tests Migration::getProcessPlugins() throws an exception.
   */
  public function testGetProcessPluginsException() : void {
    $migration = \Drupal::service('plugin.manager.migration')->createStubMigration([]);
    $this->expectException(MigrateException::class);
    $this->expectExceptionMessage('Invalid process configuration for foobar');
    $migration->getProcessPlugins([
      'foobar' => [
        'plugin' => 'get',
      ],
    ]);
  }
  
  /**
   * Tests Migration::getProcessPlugins()
   *
   * @param array $process
   *   The migration process pipeline.
   */
  public function testGetProcessPluginsExceptionMessage(array $process) : void {
    // Test with an invalid process pipeline.
    $plugin_definition = [
      'id' => 'foo',
      'process' => $process,
    ];
    $destination = array_key_first($process);
    $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($plugin_definition);
    $this->expectException(MigrateException::class);
    $this->expectExceptionMessage("Invalid process for destination '{$destination}' in migration 'foo'");
    $migration->getProcessPlugins();
  }
  
  /**
   * Provides data for testing invalid process pipeline.
   */
  public static function getProcessPluginsExceptionMessageProvider() : \Generator {
    yield 'null' => [
      'process' => [
        'dest' => NULL,
      ],
    ];
    yield 'boolean' => [
      'process' => [
        'dest' => TRUE,
      ],
    ];
    yield 'integer' => [
      'process' => [
        'dest' => 2370,
      ],
    ];
    yield 'float' => [
      'process' => [
        'dest' => 1.61,
      ],
    ];
  }
  
  /**
   * Tests Migration::getMigrationDependencies()
   */
  public function testGetMigrationDependencies() : void {
    $plugin_manager = \Drupal::service('plugin.manager.migration');
    $plugin_definition = [
      'id' => 'foo',
      'deriver' => 'fooDeriver',
      'process' => [
        'f1' => 'bar',
        'f2' => [
          'plugin' => 'migration',
          'migration' => 'm1',
        ],
        'f3' => [
          'plugin' => 'sub_process',
          'process' => [
            'target_id' => [
              'plugin' => 'migration',
              'migration' => 'm2',
            ],
          ],
        ],
        'f4' => [
          'plugin' => 'migration_lookup',
          'migration' => 'm3',
        ],
        'f5' => [
          'plugin' => 'sub_process',
          'process' => [
            'target_id' => [
              'plugin' => 'migration_lookup',
              'migration' => 'm4',
            ],
          ],
        ],
        'f6' => [
          'plugin' => 'iterator',
          'process' => [
            'target_id' => [
              'plugin' => 'migration_lookup',
              'migration' => 'm5',
            ],
          ],
        ],
        'f7' => [
          'plugin' => 'migration_lookup',
          'migration' => 'foo',
        ],
      ],
    ];
    $migration = $plugin_manager->createStubMigration($plugin_definition);
    $this->assertSame([
      'required' => [],
      'optional' => [
        'm1',
        'm2',
        'm3',
        'm4',
        'm5',
      ],
    ], $migration->getMigrationDependencies());
  }
  
  /**
   * Tests Migration::getDestinationIds()
   */
  public function testGetDestinationIds() : void {
    $migration = \Drupal::service('plugin.manager.migration')->createStubMigration([
      'destinationIds' => [
        'foo' => 'bar',
      ],
    ]);
    $destination_ids = $migration->getDestinationIds();
    $this->assertNotEmpty($destination_ids, 'Destination ids are not empty');
    $this->assertEquals([
      'foo' => 'bar',
    ], $destination_ids, 'Destination ids match the expected values.');
  }
  
  /**
   * Tests Migration::getDestinationPlugin()
   */
  public function testGetDestinationPlugin() : void {
    $migration = \Drupal::service('plugin.manager.migration')->createStubMigration([
      'destination' => [
        'no_stub' => TRUE,
      ],
    ]);
    $this->expectException(MigrateSkipRowException::class);
    $this->expectExceptionMessage("Stub requested but not made because no_stub configuration is set.");
    $migration->getDestinationPlugin(TRUE);
  }

}