public function test_get_variation() {
    $block_type = 'fake/variations';
    $settings   = array(
      'title'       => 'variations block test',
      'description' => 'a variations block test',
      'attributes'  => array( 'kind' => array( 'type' => 'string' ) ),
      'variations'  => array(
        array(
          'name'        => 'variation',
          'title'       => 'variation title',
          'description' => 'variation description',
          'category'    => 'media',
          'icon'        => 'checkmark',
          'attributes'  => array( 'kind' => 'foo' ),
          'isDefault'   => true,
          'example'     => array( 'attributes' => array( 'kind' => 'example' ) ),
          'scope'       => array( 'inserter', 'block' ),
          'keywords'    => array( 'dogs', 'cats', 'mice' ),
          'innerBlocks' => array(
            array(
              'name'       => 'fake/bar',
              'attributes' => array( 'label' => 'hi' ),
            ),
          ),
        ),
      ),
    );
    register_block_type( $block_type, $settings );
    wp_set_current_user( self::$admin_id );
    $request  = new WP_REST_Request( 'GET', '/wp/v2/block-types/' . $block_type );
    $response = rest_get_server()->dispatch( $request );
    $data     = $response->get_data();
    $this->assertSame( $block_type, $data['name'] );
    $this->assertArrayHasKey( 'variations', $data );
    $this->assertCount( 1, $data['variations'] );
    $variation = $data['variations'][0];
    $this->assertSame( 'variation title', $variation['title'] );
    $this->assertSame( 'variation description', $variation['description'] );
    $this->assertSame( 'media', $variation['category'] );
    $this->assertSame( 'checkmark', $variation['icon'] );
    $this->assertSameSets( array( 'inserter', 'block' ), $variation['scope'] );
    $this->assertSameSets( array( 'dogs', 'cats', 'mice' ), $variation['keywords'] );
    $this->assertSameSets( array( 'attributes' => array( 'kind' => 'example' ) ), $variation['example'] );
    $this->assertSameSets(
      array(
        array(
          'name'       => 'fake/bar',
          'attributes' => array( 'label' => 'hi' ),
        ),
      ),
      $variation['innerBlocks']
    );
    $this->assertSameSets(
      array( 'kind' => 'foo' ),
      $variation['attributes']
    );
  }