@Test
public void testNoDecimation() {

    // acute triangle
    LinearRing g = gf.createLinearRing(csf.create(new double[] {0,0,0,10,2,10,2,0,0,0}));
    LinearRing original = (LinearRing) g.clone();
    assertTrue(g.isValid());
    
    Decimator d = new Decimator(-1, -1);
    d.decimate(g);
    g.geometryChanged();
    assertTrue(g.isValid());
    assertTrue(original.equalsExact(g));
}