def test_knight():
current_square = Square('e', '4')
piece = Knight(Colour.WHITE)
current_square.set_piece(piece)
to_square = Square('f', '6')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('f', '2')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('d', '6')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('d', '2')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('g', '3')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('g', '5')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('c', '3')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('c', '5')
assert piece.valid_change(to_square, is_capture=False)
to_square = Square('a', '5')
assert not piece.valid_change(to_square, is_capture=False)
