/** Confirm that the equals method can distinguish all the required fields. */
public void testEquals() {
DialBackground b1 = new DialBackground();
DialBackground b2 = new DialBackground();
assertTrue(b1.equals(b2));
// paint
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow));
assertFalse(b1.equals(b2));
b2.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow));
assertTrue(b1.equals(b2));
// gradient paint transformer
b1.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
assertFalse(b1.equals(b2));
b2.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
assertTrue(b1.equals(b2));
// check an inherited attribute
b1.setVisible(false);
assertFalse(b1.equals(b2));
b2.setVisible(false);
assertTrue(b1.equals(b2));
}
