harness.check(!arc.containsAngle(0.0)); // check 1
arc = new Arc2D.Double(
new Rectangle2D.Double(0.0, 0.0, 1.0, 1.0), 90.0, 90.0, Arc2D.PIE
);
harness.check(!arc.containsAngle(0.0)); // check 2
harness.check(!arc.containsAngle(45.0)); // check 3
harness.check(arc.containsAngle(90.0)); // check 4
harness.check(arc.containsAngle(135.0)); // check 5
harness.check(!arc.containsAngle(180.0)); // check 6
harness.check(!arc.containsAngle(225.0)); // check 7