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tests.py
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import unittest
import command
import direction
from grid import Grid
from location import Location
from rover import Rover
class CommandTest(unittest.TestCase):
def test_commands_mapping(self):
self.assertEquals(command.to_commands('flbr'), [command.F, command.L, command.B, command.R])
class DirectionTest(unittest.TestCase):
def test_direction_index(self):
self.assertEquals(direction.N.get_index(), 0)
self.assertEquals(direction.W.get_index(), 3)
def test_get_direction_by_index(self):
self.assertEquals(direction.E, direction.get_direction_by_index(1))
self.assertEquals(direction.S, direction.get_direction_by_index(2))
class GridTest(unittest.TestCase):
def test_grid_dimension(self):
grid = Grid(3, 3)
self.assertEquals(grid.dimensionX, grid.dimensionY)
self.assertEquals(grid.dimensionX, 3)
def test_grid_has_obstacle(self):
grid = Grid(3, 3)
grid.place_obstacle(0, 1)
self.assertTrue(grid.has_obstacle(0, 1))
self.assertFalse(grid.has_obstacle(1, 1))
def test_grid_representation(self):
grid = Grid(3, 3)
self.assertEquals(str(grid), 'ooo\nooo\nooo\n')
def test_grid_representation_with_obstacles(self):
grid = Grid(3, 3)
grid.place_obstacle(0, 0)
self.assertEquals(str(grid), 'xoo\nooo\nooo\n')
grid.place_obstacle(1, 1)
self.assertEquals(str(grid), 'xoo\noxo\nooo\n')
class LocationTest(unittest.TestCase):
def assert_location(self, location1, location2):
self.assertEquals(location1.position, location2.position)
self.assertEquals(location1.direction, location2.direction)
def test_next_location(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.N)
next_location = location.next_location(command.F)
self.assert_location(Location(grid, 0, 1, direction.N), next_location)
next_location = next_location.next_location(command.R)
self.assert_location(Location(grid, 0, 1, direction.E), next_location)
next_location = next_location.next_location(command.F)
self.assert_location(Location(grid, 1, 1, direction.E), next_location)
def test_next_location_wrapped(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.W)
next_location = location.next_location(command.F)
self.assert_location(Location(grid, 2, 0, direction.W), next_location)
next_location = next_location.next_location(command.L)
self.assert_location(Location(grid, 2, 0, direction.S), next_location)
next_location = next_location.next_location(command.F)
self.assert_location(Location(grid, 2, 2, direction.S), next_location)
def test_location_on_obstacle(self):
grid = Grid(3, 3)
grid.place_obstacle(0, 1)
location = Location(grid, 0, 0, direction.N)
self.assertFalse(location.is_on_obstacle())
next_location = location.next_location(command.F)
self.assertTrue(next_location.is_on_obstacle())
class RoverTest(unittest.TestCase):
def assert_location(self, location, posX, posY, direction):
self.assertEquals(location.position, (posX, posY))
self.assertEquals(location.direction, direction)
def test_rover_initial_position(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.N)
rover = Rover(location)
self.assert_location(rover.location, 0, 0, direction.N)
def test_rover_can_move(self):
grid = Grid(3, 3)
location = Location(grid, 1, 1, direction.W)
rover = Rover(location)
rover.move(command.F)
self.assert_location(rover.location, 0, 1, direction.W)
rover.move(command.F)
self.assert_location(rover.location, 2, 1, direction.W)
def test_rover_can_turn(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.W)
rover = Rover(location)
rover.move(command.R)
self.assert_location(rover.location, 0, 0, direction.N)
rover.move(command.L)
self.assert_location(rover.location, 0, 0, direction.W)
rover.move(command.L)
self.assert_location(rover.location, 0, 0, direction.S)
def test_rover_can_move_and_turn(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.N)
rover = Rover(location)
rover.move(command.F)
self.assert_location(rover.location, 0, 1, direction.N)
rover.move(command.F)
self.assert_location(rover.location, 0, 2, direction.N)
rover.move(command.R)
self.assert_location(rover.location, 0, 2, direction.E)
rover.move(command.F)
self.assert_location(rover.location, 1, 2, direction.E)
rover.move(command.F)
self.assert_location(rover.location, 2, 2, direction.E)
def test_rover_can_move_and_turn_batch(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.N)
rover = Rover(location)
rover.move(command.to_commands('ffrff'))
self.assert_location(rover.location, 2, 2, direction.E)
def test_rover_can_wrap(self):
grid = Grid(3, 3)
location = Location(grid, 0, 0, direction.N)
rover = Rover(location)
rover.move(command.B)
self.assert_location(rover.location, 0, 2, direction.N)
rover.move(command.to_commands('lf'))
self.assert_location(rover.location, 2, 2, direction.W)
def test_rover_can_detect_obstacle(self):
grid = Grid(3, 3)
grid.place_obstacle(0, 2)
location = Location(grid, 0, 0, direction.N)
rover = Rover(location)
rover.move(command.to_commands('fff'))
self.assert_location(rover.location, 0, 1, direction.N)
self.assertEquals(1, rover.last_moved_steps)
self.assertTrue(rover.faced_obstacle)