def test_solution_to_split_problem_solves_original_problem(a, n):
try:
result = list(split_problem(a, n))
for sub in result:
s = get_exact_cover(sub)
if s.size > 0:
assert is_solution(s, sub)
assert is_solution(s, a)
except NoSolution:
assert True
except CannotSplitFurther:
assert True
def test_solve_very_hard_sudoku_problem_2():
matrix = load_problem("tests/files/very_hard_sudoku_2.csv")
solution = get_exact_cover(matrix)
assert is_solution(solution, matrix)
def test_solve_medium_sudoku_problem():
matrix = load_problem("tests/files/medium_sudoku.csv")
solution = get_exact_cover(matrix)
assert is_solution(solution, matrix)
def test_is_solution_fails_for_proper_subset(a):
s = get_exact_cover(a)
assert not is_solution(s[:-1], a)
def test_is_solution_fails_for_extra_rows(a, x):
s = get_exact_cover(a)
assert not is_solution(list(s) + [x], a)
def test_list_is_solution(a):
s = list(get_exact_cover(a))
assert is_solution(s, a)
def test_is_solution(a):
s = get_exact_cover(a)
assert is_solution(s, a)
