def immediate_fills_candidates(immediate_fills_dicts, medium_sudoku):
from sudoku_solver_hard import get_missing, get_starting_spots, get_candidates
m = medium_sudoku
dicts, square_coords = immediate_fills_dicts
dicts = get_missing(dicts)
candidates = get_candidates(m, dicts, square_coords)
return candidates
def test_build_possible_naked_sets(naked_sets_sudoku, naked_sets_dicts):
"""Given a Sudoku test that function returns possible naked sets."""
from sudoku_solver_hard import get_candidates, build_possible_naked_sets
m = naked_sets_sudoku
dicts, square_coords = naked_sets_dicts
candidates = get_candidates(m, dicts, square_coords)
possible_naked_sets = build_possible_naked_sets(candidates)
assert possible_naked_sets[(7, 3)] == [3, 8]
assert possible_naked_sets[(8, 5)] == [3, 8]
def test_get_candidates_account_for_naked_sets(medium_sudoku):
"""Test that function returns a dict of candidates per coordinate but omits
numbers for coordinates from naked sets if provided."""
from sudoku_solver_hard import setup, get_missing, get_candidates
c, dicts, square_coords = setup(medium_sudoku)
naked_sets = {(3, 8): [(8, 7), (8, 6), (8, 2)]}
c = get_candidates(medium_sudoku, dicts, square_coords, naked_sets)
assert 3, 8 not in c[(8, 6)]
assert 3, 8 not in c[(8, 2)]
assert 3, 8 not in c[(8, 7)]
def test_find_naked_sets(naked_sets_sudoku, naked_sets_dicts):
"""Given a dict of naked sets, test that function returns a list
of coordinates from which a naked set can be removed from."""
from sudoku_solver_hard import get_candidates, find_naked_sets
m = naked_sets_sudoku
dicts, square_coords = naked_sets_dicts
c = get_candidates(m, dicts, square_coords)
rows, cols = find_naked_sets(c, dicts)
assert (8, 6) in rows[(3, 8)]
assert (8, 2) in rows[(3, 8)]
assert (8, 7) in rows[(3, 8)]
assert cols == {}
def test_coords_per_naked_set(naked_sets_sudoku, naked_sets_dicts):
"""Given a dict of possible naked sets, test that function returns the inverted dict."""
from sudoku_solver_hard import (get_candidates, build_possible_naked_sets,
build_coords_per_naked_set)
m = naked_sets_sudoku
dicts, square_coords = naked_sets_dicts
c = get_candidates(m, dicts, square_coords)
possible_naked_sets = build_possible_naked_sets(c)
coords_per_naked_set = build_coords_per_naked_set(possible_naked_sets)
for k, v in coords_per_naked_set.items():
assert len(v) == len(
[1 for nums in possible_naked_sets.values() if nums == list(k)])
def test_remove_naked_sets_from_candidates(naked_sets_sudoku,
naked_sets_dicts):
"""Given a dict of naked sets, test that function returns a list
of coordinates from which a naked set can be removed from."""
from sudoku_solver_hard import (get_candidates, find_naked_sets,
remove_naked_sets_from_candidates)
m = naked_sets_sudoku
dicts, square_coords = naked_sets_dicts
c = get_candidates(m, dicts, square_coords)
rows, cols = find_naked_sets(c, dicts)
c = remove_naked_sets_from_candidates(c, rows, cols)
assert 3, 8 not in c[(8, 6)]
assert 3, 8 not in c[(8, 2)]
assert 3, 8 not in c[(8, 7)]
def test_update_naked_set(naked_sets_sudoku, naked_sets_dicts):
"""Given a dict of possible naked sets and it inverse dict, test that the
function returns an updated dict."""
from sudoku_solver_hard import (get_candidates, build_possible_naked_sets,
build_coords_per_naked_set,
update_naked_set)
m = naked_sets_sudoku
dicts, square_coords = naked_sets_dicts
c = get_candidates(m, dicts, square_coords)
possible_naked_sets = build_possible_naked_sets(c)
coords_per_naked_set = build_coords_per_naked_set(possible_naked_sets)
naked_sets = update_naked_set(possible_naked_sets, coords_per_naked_set)
vals = []
for v in naked_sets.values():
if v not in vals: vals.append(v)
assert len(vals) == 1
