ListLayout extends LayoutBase { @Override public Pane getView() { return root; }  @Override List<Group> getSettings(); @Override Pane getView(); @Override String getName();  }
@Test public void testChildrenAdded() { Platform.runLater(() -> { layout.addChild(new MockWidget()); layout.addChild(new MockWidget()); }); waitForFxEvents(); assertEquals(2, ((VBox) layout.getView().lookup(".layout-container")).getChildren().size()); }