modules/javafx.controls/src/test/java/test/javafx/scene/control/skin/CheckBoxSkinTest.java

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  /*
!  * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
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  /*
!  * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
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  import javafx.beans.value.ObservableValue;
  import javafx.geometry.Insets;
  import javafx.scene.control.CheckBox;
  import javafx.scene.control.skin.CheckBoxSkin;
+ import com.sun.javafx.tk.Toolkit;
+ import javafx.scene.Group;
+ import javafx.scene.Scene;
+ import javafx.stage.Stage;
  
+ import org.junit.BeforeClass;
  import org.junit.Before;
  import org.junit.Test;
  
  /**
   */
  public class CheckBoxSkinTest {
      private CheckBox checkbox;
      private CheckBoxSkinMock skin;
+     private static Toolkit tk;
+     private Scene scene;
+     private Stage stage;
+ 
+     @BeforeClass public static void initToolKit() {
+         tk = Toolkit.getToolkit();
+     }
  
      @Before public void setup() {
          checkbox = new CheckBox("Test");
          skin = new CheckBoxSkinMock(checkbox);
          // Set some padding so that any places where padding was being
          // computed but wasn't expected will be caught.
          checkbox.setPadding(new Insets(10, 10, 10, 10));
          checkbox.setSkin(skin);
  
+         scene = new Scene(new Group(checkbox));
+         stage = new Stage();
+         stage.setScene(scene);
+         stage.show();
+         tk.firePulse();
      }
  
      @Test public void maxWidthTracksPreferred() {
          checkbox.setPrefWidth(500);
          assertEquals(500, checkbox.maxWidth(-1), 0);
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      @Test public void maxHeightTracksPreferred() {
          checkbox.setPrefHeight(500);
          assertEquals(500, checkbox.maxHeight(-1), 0);
      }
  
+     @Test public void testPadding() {
+         checkbox.setPadding(new Insets(10, 20, 30, 40));
+ 
+         tk.firePulse();
+ 
+         double expectedArea = checkbox.getHeight() * checkbox.getWidth();
+         double actualArea = checkbox.getSkin().getNode().computeAreaInScreen();
+ 
+         assertEquals(expectedArea, actualArea, 0.001);
+     }
+ 
      public static final class CheckBoxSkinMock extends CheckBoxSkin {
          boolean propertyChanged = false;
          int propertyChangeCount = 0;
          public CheckBoxSkinMock(CheckBox checkbox) {
              super(checkbox);