def test_queen_problem_with_four_queens():
Coordinate = morpy.Coordinate
dimensions = morpy.Dimensions(4, 4)
pieces = 4 * morpy.QUEEN
positions = morpy.get_positions_iter(dimensions, pieces)
position_1 = morpy.Position(
frozendict(
{
Coordinate(0, 2): morpy.QUEEN,
Coordinate(1, 0): morpy.QUEEN,
Coordinate(2, 3): morpy.QUEEN,
Coordinate(3, 1): morpy.QUEEN,
}
),
dimensions,
)
position_2 = morpy.Position(
frozendict(
{
Coordinate(0, 1): morpy.QUEEN,
Coordinate(1, 3): morpy.QUEEN,
Coordinate(2, 0): morpy.QUEEN,
Coordinate(3, 2): morpy.QUEEN,
}
),
dimensions,
)
expected = (position_1, position_2)
assert set(expected) == set(positions)
def test_get_valid_positions_3_by_3_two_kings_one_rook_iter():
Coordinate = morpy.Coordinate
dimensions = morpy.Dimensions(3, 3)
pieces = 2 * morpy.KING + morpy.ROOK
positions = morpy.get_positions_iter(dimensions, pieces)
position_1 = morpy.Position(
frozendict({Coordinate(0, 1): morpy.ROOK, Coordinate(2, 0): morpy.KING, Coordinate(2, 2): morpy.KING}),
dimensions,
)
position_2 = morpy.Position(
frozendict({Coordinate(1, 0): morpy.ROOK, Coordinate(0, 2): morpy.KING, Coordinate(2, 2): morpy.KING}),
dimensions,
)
position_3 = morpy.Position(
frozendict({Coordinate(1, 2): morpy.ROOK, Coordinate(0, 0): morpy.KING, Coordinate(2, 0): morpy.KING}),
dimensions,
)
position_4 = morpy.Position(
frozendict({Coordinate(2, 1): morpy.ROOK, Coordinate(0, 0): morpy.KING, Coordinate(0, 2): morpy.KING}),
dimensions,
)
expected = (position_1, position_2, position_3, position_4)
assert set(expected) == set(positions)
def test_copy():
d = frozendict({'a': 'a'})
d2 = d.copy()
assert d is not d2
def test_cant_set_item():
d = frozendict({'a': 'a'})
with raises(TypeError):
d['b'] = 'b'
assert 'b' not in d
def test_repr():
d = frozendict({'a': 'a'})
assert str(d) == "<frozendict {'a': 'a'}>"