Newer
Older
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for `flatland` package."""
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
from flatland.core.transitions import RailEnvTransitions, GridTransitions
import pytest
def test_valid_railenv_transitions():
rail_env_trans = RailEnvTransitions()
# dir_map = {'N': 0,
# 'E': 1,
# 'S': 2,
# 'W': 3}
for i in range(2):
assert (rail_env_trans.get_transitions_from_orientation(int('1100110000110011', 2), i) == (1, 1, 0, 0))
assert(rail_env_trans.get_transitions_from_orientation(int('1100110000110011', 2), 2+i) == (0, 0, 1, 1))
no_transition_cell = int('0000000000000000', 2)
for i in range(4):
assert(rail_env_trans.get_transitions_from_orientation(no_transition_cell, i) == (0, 0, 0, 0))
# Facing south, going south
north_south_transition = rail_env_trans.set_transitions_from_orientation(no_transition_cell, 2, (0, 0, 1, 0))
assert(rail_env_trans.set_transition_from_orientation_to_direction(north_south_transition, 2, 2, 0) ==
no_transition_cell)
assert(rail_env_trans.get_transition_from_orientation_to_direction(north_south_transition, 2, 2))
# Facing north, going east
south_east_transition = rail_env_trans.set_transition_from_orientation_to_direction(no_transition_cell, 0, 1, 1)
assert(rail_env_trans.get_transition_from_orientation_to_direction(south_east_transition, 0, 1))
# The opposite transitions are not feasible
assert(not rail_env_trans.get_transition_from_orientation_to_direction(north_south_transition, 2, 0))
assert(not rail_env_trans.get_transition_from_orientation_to_direction(south_east_transition, 2, 1))
east_west_transition = rail_env_trans.rotate_transition(north_south_transition, 90)
north_west_transition = rail_env_trans.rotate_transition(south_east_transition, 180)
# Facing west, going west
assert(rail_env_trans.get_transition_from_orientation_to_direction(east_west_transition, 3, 3))
# Facing south, going west
assert(rail_env_trans.get_transition_from_orientation_to_direction(north_west_transition, 2, 3))
assert(south_east_transition == rail_env_trans.rotate_transition(south_east_transition, 360))
def test_diagonal_transitions():
diagonal_trans_env = GridTransitions([], True)
# Facing north, going north-east
south_northeast_transition = int('01000000' + '0'*8*7, 2)
assert(diagonal_trans_env.get_transitions_from_orientation(south_northeast_transition, 0) ==
(0, 1, 0, 0, 0, 0, 0, 0))
# Allowing transition from north to southwest: Facing south, going southwest
north_southwest_transition = diagonal_trans_env.set_transitions_from_orientation(
int('0' *64, 2), 4, (0, 0, 0, 0, 0, 1, 0, 0))
assert(diagonal_trans_env.rotate_transition(south_northeast_transition, 180) == north_southwest_transition)