def test_knight_moves(self):
knight1 = Knight(Colour.WHITE, (4, 4))
pawn1 = Pawn(Colour.WHITE, (3, 6))
self.assertEquals(set(knight1.list_moves([pawn1])),
set([(5, 6), (3, 2), (6, 3), (2, 3),
(2, 5), (5, 2), (6, 5)]))
