def test_build_map():
parent_of = day06.build_map('test_input_day06_part1.txt')
assert parent_of['H'] == 'G'
assert parent_of['L'] == 'K'
def test_count_orbits_to_node():
parent_of = day06.build_map('test_input_day06_part2.txt')
assert day06.count_orbits(parent_of, 'YOU', 'D') == 4
assert day06.count_orbits(parent_of, 'SAN', 'D') == 2
def test_common_node():
parent_of = day06.build_map('test_input_day06_part2.txt')
origin_path = day06.path_to_root(parent_of, 'YOU')
destination_path = day06.path_to_root(parent_of, 'SAN')
assert day06.common_node(origin_path, destination_path) == 'D'
def test_path_to_root():
parent_of = day06.build_map('test_input_day06_part2.txt')
assert day06.path_to_root(parent_of, 'YOU') == [
'K', 'J', 'E', 'D', 'C', 'B', 'COM']
assert day06.path_to_root(parent_of, 'SAN') == [
'I', 'D', 'C', 'B', 'COM']
def test_count_orbital_transfers():
parent_of = day06.build_map('test_input_day06_part2.txt')
assert day06.count_orbital_transfers(parent_of,
origin='YOU',
destination='SAN') == 4
def test_count_orbits():
parent_of = day06.build_map('test_input_day06_part1.txt')
assert day06.count_orbits(parent_of, 'D') == 3
assert day06.count_orbits(parent_of, 'L') == 7
assert day06.count_orbits(parent_of, 'COM') == 0