def test_two_coordinates_with_differrent_vertical_position(self) -> None:
assert Coordinates(0, 0) != Coordinates(0, 1)
def test_two_equal_coordinates(self) -> None:
assert Coordinates(0, 0) == Coordinates(0, 0)
def test_two_coordinates_with_differrent_horizontal_position(self) -> None:
assert Coordinates(0, 0) != Coordinates(1, 0)
class TestRover:
def test_starts_at_the_given_position_and_facing_direction(self) -> None:
rover = Rover(Coordinates(1, 3), Direction.north())
assert rover.position() == Coordinates(1, 3)
assert rover.direction() == Direction.north()
@pytest.mark.parametrize(
('direction', 'initial', 'final'),
[
(Direction.north(), Coordinates(3, 3), Coordinates(3, 2)),
(Direction.south(), Coordinates(3, 3), Coordinates(3, 4)),
(Direction.east(), Coordinates(3, 3), Coordinates(4, 3)),
(Direction.west(), Coordinates(3, 3), Coordinates(2, 3)),
],
)
def test_moves_forward(
self,
direction: Direction,
initial: Coordinates,
final: Coordinates,
) -> None:
rover = Rover(initial, direction)
rover.move_forward()
assert rover.position() == final
@pytest.mark.parametrize(
('direction', 'initial', 'final'),
[
(Direction.north(), Coordinates(3, 3), Coordinates(3, 4)),
(Direction.south(), Coordinates(3, 3), Coordinates(3, 2)),
(Direction.east(), Coordinates(3, 3), Coordinates(2, 3)),
(Direction.west(), Coordinates(3, 3), Coordinates(4, 3)),
],
)
def test_moves_backward(
self,
direction: Direction,
initial: Coordinates,
final: Coordinates,
) -> None:
rover = Rover(initial, direction)
rover.move_backward()
assert rover.position() == final
@pytest.mark.parametrize(
('initial', 'final'),
[
(Direction.north(), Direction.east()),
(Direction.east(), Direction.south()),
(Direction.south(), Direction.west()),
(Direction.west(), Direction.north()),
],
)
def test_turns_right(self, initial: Direction, final: Direction) -> None:
rover = Rover(Coordinates(3, 3), initial)
rover.turn_right()
assert rover.direction() == final
@pytest.mark.parametrize(
('initial', 'final'),
[
(Direction.north(), Direction.west()),
(Direction.west(), Direction.south()),
(Direction.south(), Direction.east()),
(Direction.east(), Direction.north()),
],
)
def test_turns_left(self, initial: Direction, final: Direction) -> None:
rover = Rover(Coordinates(3, 3), initial)
rover.turn_left()
assert rover.direction() == final
def test_vertical_position_can_not_be_negative(self) -> None:
with pytest.raises(NegativeVerticalCoordinate):
Coordinates(0, -1)
def test_horizontal_position_can_not_be_negative(self) -> None:
with pytest.raises(NegativeHorizontalCoordinate):
Coordinates(-1, 0)
def test_turns_left(self, initial: Direction, final: Direction) -> None:
rover = Rover(Coordinates(3, 3), initial)
rover.turn_left()
assert rover.direction() == final
def test_starts_at_the_given_position_and_facing_direction(self) -> None:
rover = Rover(Coordinates(1, 3), Direction.north())
assert rover.position() == Coordinates(1, 3)
assert rover.direction() == Direction.north()