/** Two objects that are equal are required to return the same hashCode. */
public void testHashCode() {
Stroke stroke = new BasicStroke(2.0f);
XYPolygonAnnotation a1 =
new XYPolygonAnnotation(
new double[] {1.0, 2.0, 3.0, 4.0, 5.0, 6.0}, stroke, Color.red, Color.blue);
XYPolygonAnnotation a2 =
new XYPolygonAnnotation(
new double[] {1.0, 2.0, 3.0, 4.0, 5.0, 6.0}, stroke, Color.red, Color.blue);
assertTrue(a1.equals(a2));
int h1 = a1.hashCode();
int h2 = a2.hashCode();
assertEquals(h1, h2);
}
