@Test
  public void testCopying() {
    final Scale trans = new Scale(34, 67, 10, 66, 77, 5);

    Transform copy = trans.clone();

    TransformHelper.assertMatrix(copy, 34, 0, 0, -2178, 0, 67, 0, -5082, 0, 0, 10, -45);
  }
  @Test
  public void testToString() {
    final Scale trans = new Scale(5, 8);

    String s = trans.toString();

    assertNotNull(s);
    assertFalse(s.isEmpty());
  }
  @Test
  public void testScale() {
    final Scale trans =
        new Scale() {
          {
            setX(25);
            setY(52);
          }
        };
    final Rectangle n = new Rectangle();
    n.getTransforms().add(trans);

    assertTx(n, BaseTransform.getScaleInstance(25, 52));
    TransformHelper.assertMatrix(trans, 25, 0, 0, 0, 0, 52, 0, 0, 0, 0, 1, 0);

    trans.setX(34);
    Assert.assertEquals(34, trans.getX(), 1e-100);
    assertTx(n, BaseTransform.getScaleInstance(34, 52));
    TransformHelper.assertMatrix(trans, 34, 0, 0, 0, 0, 52, 0, 0, 0, 0, 1, 0);

    trans.setY(67);
    assertTx(n, BaseTransform.getScaleInstance(34, 67));
    TransformHelper.assertMatrix(trans, 34, 0, 0, 0, 0, 67, 0, 0, 0, 0, 1, 0);

    trans.setPivotX(66);

    Affine2D expTx = new Affine2D();
    expTx.setToTranslation(trans.getPivotX(), trans.getPivotY());
    expTx.scale(trans.getX(), trans.getY());
    expTx.translate(-trans.getPivotX(), -trans.getPivotY());
    assertTx(n, expTx);
    TransformHelper.assertMatrix(trans, 34, 0, 0, -2178, 0, 67, 0, 0, 0, 0, 1, 0);

    trans.setPivotY(77);

    expTx.setToTranslation(trans.getPivotX(), trans.getPivotY());
    expTx.scale(trans.getX(), trans.getY());
    expTx.translate(-trans.getPivotX(), -trans.getPivotY());
    assertTx(n, expTx);
    TransformHelper.assertMatrix(trans, 34, 0, 0, -2178, 0, 67, 0, -5082, 0, 0, 1, 0);

    trans.setZ(10);
    trans.setPivotZ(5);
    TransformHelper.assertMatrix(trans, 34, 0, 0, -2178, 0, 67, 0, -5082, 0, 0, 10, -45);
  }