@Test
public void lengthSquaredProperty() {

	Vector2dfx vector = new Vector2dfx(1, 2);
	assertEpsilonEquals(5, vector.getLengthSquared());
	
	ReadOnlyDoubleProperty property = vector.lengthSquaredProperty();
	assertNotNull(property);
	assertEpsilonEquals(5, property.get());
	
	vector.set(4, -10);
	assertEpsilonEquals(116, property.get());
}