public void setupindices_works()
{
var p = new Patch(3, 3);
p.SetupIndices();
Assert.AreEqual(3, p.Index[0]);
Assert.AreEqual(0, p.Index[1]);
Assert.AreEqual(4, p.Index[2]);
Assert.AreEqual(1, p.Index[3]);
Assert.AreEqual(7, p.Index[8]);
Assert.AreEqual(4, p.Index[9]);
Assert.AreEqual(8, p.Index[10]);
Assert.AreEqual(5, p.Index[11]);
}
