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a2_test.py
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import unittest
from unittest.mock import patch
from sudoku_puzzle import *
from solver import *
from word_ladder_puzzle import *
from expression_tree import *
from expression_tree_puzzle import *
class TestUtil(unittest.TestCase):
def assertSoduku(self, exp, sudoku):
self.assertEqual(exp, sudoku)
def assertLadder(self, exp, ladder):
self.assertEqual(exp, ladder)
class Part1Test(TestUtil):
def setUp(self) -> None:
pass
def tearDown(self) -> None:
pass
def test_failfast_all_empty(self):
"""
You cannot immediately determine the dead end of an empty board
"""
sudoku = SudokuPuzzle(4, [[EMPTY_CELL for _ in range(4)] for _ in
range(4)], {str(i) for i in range(1, 5, 1)})
res = sudoku.fail_fast()
self.assertFalse(res)
def test_fail_fast_with_in_row(self):
"""
-------
|24| |
| |13|
-------
| | |
| | |
-------
For the row 1 the only choice you have is 13 which resist in the same
square
"""
sudoku = SudokuPuzzle(4, [['2', '4', EMPTY_CELL, EMPTY_CELL],
[EMPTY_CELL, EMPTY_CELL, '1', '3'],
[EMPTY_CELL] * 4,
[EMPTY_CELL] * 4],
{str(i) for i in range(1, 5, 1)})
res = sudoku.fail_fast()
self.assertTrue(res)
def test_fail_fast_with_in_square(self):
"""
-------
|1 | |
|34| |
-------
| 2| |
| | |
-------
For the first sub-square you can the only remaining one is 2 but it lies
on the same column
"""
sudoku = SudokuPuzzle(4, [['1', EMPTY_CELL, EMPTY_CELL, EMPTY_CELL],
['3', '4', EMPTY_CELL, EMPTY_CELL],
[EMPTY_CELL, '2', EMPTY_CELL, EMPTY_CELL],
[EMPTY_CELL] * 4],
{str(i) for i in range(1, 5, 1)})
res = sudoku.fail_fast()
self.assertTrue(res)
def test_fail_fast_with_in_column(self):
"""
-------
|1 | |
|3 | |
-------
| 2| |
| 4| |
-------
For this first column you need to fill 24 which already appear in the
same sub-square
"""
sudoku = SudokuPuzzle(4, [['1', EMPTY_CELL, EMPTY_CELL, EMPTY_CELL],
['3', EMPTY_CELL, EMPTY_CELL, EMPTY_CELL],
[EMPTY_CELL, '2', EMPTY_CELL, EMPTY_CELL],
[EMPTY_CELL, '4', EMPTY_CELL, EMPTY_CELL],
], {str(i) for i in range(1, 5, 1)})
res = sudoku.fail_fast()
self.assertTrue(res)
def test_fail_fast_non_rec(self):
"""
-------
| 1| |
| | |
-------
|2 | |
|4 | |
-------
Although, in the end, this is an unsolvable board, but it requires at
least two steps detection, in the current state, the top left one can
still fill with 3, thus we cannot determine this will fail
"""
sudoku = SudokuPuzzle(4,
[[EMPTY_CELL, '1', EMPTY_CELL, EMPTY_CELL],
[EMPTY_CELL, EMPTY_CELL, EMPTY_CELL, EMPTY_CELL],
['2', EMPTY_CELL, EMPTY_CELL, EMPTY_CELL],
['4', EMPTY_CELL, EMPTY_CELL, EMPTY_CELL], ],
{str(i) for i in range(1, 5, 1)})
res = sudoku.fail_fast()
self.assertFalse(res)
class Part2Test(TestUtil):
def setUp(self) -> None:
self.empty_board = SudokuPuzzle(4, [[EMPTY_CELL] * 4,
[EMPTY_CELL] * 4,
[EMPTY_CELL] * 4,
[EMPTY_CELL] * 4],
{str(i) for i in range(1, 5, 1)})
self.board_4_4 = SudokuPuzzle(4,
[['1'] + [EMPTY_CELL] * 3,
[EMPTY_CELL] * 2 + ['2', EMPTY_CELL],
[EMPTY_CELL, '3'] + [EMPTY_CELL] * 2,
[EMPTY_CELL] * 4],
{str(i) for i in range(1, 5, 1)})
self.board_4_4_2 = SudokuPuzzle(4,
[['1'] + [EMPTY_CELL] * 3,
[EMPTY_CELL] * 3 + ['3'],
[EMPTY_CELL, '4'] + ['2', EMPTY_CELL],
[EMPTY_CELL] * 4],
{str(i) for i in range(1, 5, 1)})
self.board_9_9 = SudokuPuzzle(9,
[['2', '8', '6', '1', '5', '9', '7', '4',
'3'],
['3', '5', '7', '6', '4', '8', '2', '1',
'9'],
['4', '1', '9', '7', EMPTY_CELL,
EMPTY_CELL, '5', '6', '8'],
['8', '2', '1', '9', '6', '5', '4', '3',
'7'],
['6', '9', '3', '8', '7', '4', '1', '2',
'5'],
['7', '4', '5', '3', EMPTY_CELL,
EMPTY_CELL, '8', '9', '6'],
['5', '6', '8', '2', EMPTY_CELL,
EMPTY_CELL, '9', '7', '4'],
['1', '3', '4', '5', '9', '7', '6', '8',
'2'],
['9', '7', '2', '4', '8', '6', '3', '5',
'1']
], {str(i) for i in range(1, 10)})
self.fail_board = SudokuPuzzle(4,
[[EMPTY_CELL, '1', EMPTY_CELL,
EMPTY_CELL],
[EMPTY_CELL, EMPTY_CELL, EMPTY_CELL,
EMPTY_CELL],
['2', EMPTY_CELL, EMPTY_CELL,
EMPTY_CELL],
['4', EMPTY_CELL, EMPTY_CELL,
EMPTY_CELL], ],
{str(i) for i in range(1, 5, 1)})
self.bfs_solver = BfsSolver()
self.dfs_solver = DfsSolver()
def tearDown(self) -> None:
pass
def test_bfs_result(self):
res = self.bfs_solver.solve(self.board_4_4_2)
self.assertTrue(len(res) == 13)
exp = SudokuPuzzle(4,
[['1', '3', '4', '2'],
['4', '2', '1', '3'],
['3', '4', '2', '1'],
['2', '1', '3', '4']],
{str(i) for i in range(1, 5, 1)})
self.assertSoduku(str(exp), str(res[-1]))
def test_bfs_result_2(self):
res = self.bfs_solver.solve(self.fail_board)
self.assertTrue(res == [])
def test_bfs_result_3(self):
res = self.bfs_solver.solve(self.empty_board)
self.assertTrue(len(res) == 17)
self.assertTrue(res[-1].is_solved())
def test_bfs_result_4(self):
sol = SudokuPuzzle(9, [['2', '8', '6', '1', '5', '9', '7', '4',
'3'],
['3', '5', '7', '6', '4', '8', '2', '1',
'9'],
['4', '1', '9', '7', '2', '3', '5', '6', '8'],
['8', '2', '1', '9', '6', '5', '4', '3',
'7'],
['6', '9', '3', '8', '7', '4', '1', '2',
'5'],
['7', '4', '5', '3', '1', '2', '8', '9', '6'],
['5', '6', '8', '2', '3', '1', '9', '7', '4'],
['1', '3', '4', '5', '9', '7', '6', '8',
'2'],
['9', '7', '2', '4', '8', '6', '3', '5',
'1']
], {str(i) for i in range(1, 10)})
for _ in range(1000):
res = self.bfs_solver.solve(self.board_9_9, {str(sol)})
self.assertTrue(len(res) == 7)
self.assertTrue(res[-1].is_solved())
self.assertSoduku(
SudokuPuzzle(9, [['2', '8', '6', '1', '5', '9', '7', '4',
'3'],
['3', '5', '7', '6', '4', '8', '2', '1',
'9'],
['4', '1', '9', '7', '3', '2', '5', '6', '8'],
['8', '2', '1', '9', '6', '5', '4', '3',
'7'],
['6', '9', '3', '8', '7', '4', '1', '2',
'5'],
['7', '4', '5', '3', '2', '1', '8', '9', '6'],
['5', '6', '8', '2', '1', '3', '9', '7', '4'],
['1', '3', '4', '5', '9', '7', '6', '8',
'2'],
['9', '7', '2', '4', '8', '6', '3', '5',
'1']
], {str(i) for i in range(1, 10)}), res[-1])
def test_dfs_result(self):
res = self.dfs_solver.solve(self.board_4_4_2)
self.assertTrue(len(res) == 13)
exp = SudokuPuzzle(4,
[['1', '3', '4', '2'],
['4', '2', '1', '3'],
['3', '4', '2', '1'],
['2', '1', '3', '4']],
{str(i) for i in range(1, 5, 1)})
self.assertSoduku(str(exp), str(res[-1]))
def test_dfs_result_2(self):
res = self.dfs_solver.solve(self.fail_board)
self.assertTrue(res == [])
def test_dfs_result_3(self):
res = self.dfs_solver.solve(self.empty_board)
self.assertTrue(len(res) == 17)
self.assertTrue(res[-1].is_solved())
def test_dfs_result_4(self):
sol = SudokuPuzzle(9, [['2', '8', '6', '1', '5', '9', '7', '4',
'3'],
['3', '5', '7', '6', '4', '8', '2', '1',
'9'],
['4', '1', '9', '7', '2', '3', '5', '6', '8'],
['8', '2', '1', '9', '6', '5', '4', '3',
'7'],
['6', '9', '3', '8', '7', '4', '1', '2',
'5'],
['7', '4', '5', '3', '1', '2', '8', '9', '6'],
['5', '6', '8', '2', '3', '1', '9', '7', '4'],
['1', '3', '4', '5', '9', '7', '6', '8',
'2'],
['9', '7', '2', '4', '8', '6', '3', '5',
'1']
], {str(i) for i in range(1, 10)})
for _ in range(1000):
res = self.dfs_solver.solve(self.board_9_9, {str(sol)})
self.assertTrue(len(res) == 7)
self.assertTrue(res[-1].is_solved())
self.assertSoduku(
SudokuPuzzle(9, [['2', '8', '6', '1', '5', '9', '7', '4',
'3'],
['3', '5', '7', '6', '4', '8', '2', '1',
'9'],
['4', '1', '9', '7', '3', '2', '5', '6', '8'],
['8', '2', '1', '9', '6', '5', '4', '3',
'7'],
['6', '9', '3', '8', '7', '4', '1', '2',
'5'],
['7', '4', '5', '3', '2', '1', '8', '9', '6'],
['5', '6', '8', '2', '1', '3', '9', '7', '4'],
['1', '3', '4', '5', '9', '7', '6', '8',
'2'],
['9', '7', '2', '4', '8', '6', '3', '5',
'1']
], {str(i) for i in range(1, 10)}), res[-1])
def test_unique_solution_1(self):
"""
-------------
|286|159|743|
|357|648|219|
|419|7 |568|
-------------
|821|965|437|
|693|874|125|
|745|3 |896|
-------------
|568|2 |974|
|134|597|682|
|972|486|351|
-------------
This actually has two solutions
Solution 1
-------------
|286|159|743|
|357|648|219|
|419|723|568|
-------------
|821|965|437|
|693|874|125|
|745|312|896|
-------------
|568|231|974|
|134|597|682|
|972|486|351|
-------------
Solution 2
-------------
|286|159|743|
|357|648|219|
|419|732|568|
-------------
|821|965|437|
|693|874|125|
|745|321|896|
-------------
|568|213|974|
|134|597|682|
|972|486|351|
-------------
"""
self.assertFalse(self.board_9_9.has_unique_solution())
def test_unique_solution_2(self):
self.assertFalse(self.board_4_4.has_unique_solution())
def test_unique_solution_3(self):
self.assertTrue(self.board_4_4_2.has_unique_solution())
def test_unique_solution_4(self):
self.assertFalse(self.empty_board.has_unique_solution())
def test_unique_solution_5(self):
self.assertFalse(self.fail_board.has_unique_solution())
class Part3Test(TestUtil):
def setUp(self) -> None:
pass
def tearDown(self) -> None:
pass
def test_extension(self):
ladder = WordLadderPuzzle('bb', 'cc',
{'bb', 'bc', 'cc', 'ac', 'bcd', 'bbc'})
ext = ladder.extensions()
self.assertTrue(len(ext) == 1)
self.assertLadder(WordLadderPuzzle('bc', 'cc',
{'bb', 'bc', 'cc', 'ac', 'bcd',
'bbc'}),
ext[-1])
def test_extension_2(self):
ladder = WordLadderPuzzle('bc', 'cc', {'bb', 'bc', 'cc'})
act = ladder.extensions()
self.assertTrue(len(act) == 2)
exp = [WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'}),
WordLadderPuzzle('cc', 'cc', {'bb', 'bc', 'cc'})]
self.assertTrue(act == exp or act == exp[::-1])
def test_extension_3(self):
ladder = WordLadderPuzzle('a', 'c',
{'a', 'b', 'c', 'ab', 'ac', 'bc', 'abc'})
act = ladder.extensions()
self.assertTrue(len(act) == 2)
exp = [WordLadderPuzzle('b', 'c',
{'a', 'b', 'c', 'ab', 'ac', 'bc', 'abc'}),
WordLadderPuzzle('c', 'c',
{'a', 'b', 'c', 'ab', 'ac', 'bc', 'abc'})]
self.assertTrue(act == exp or act == exp[::-1])
def test_is_solved(self):
ladder = WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'})
ext = ladder.extensions()[0]
self.assertFalse(ext.is_solved())
self.assertTrue(ext == WordLadderPuzzle('bc', 'cc', {'bb', 'bc', 'cc'}))
ext2 = {x.from_word: x.is_solved() for x in ext.extensions()}
self.assertDictEqual({'bb': False, 'cc': True}, ext2)
def test_bfs_ladder(self):
word_set = {'a', 'b', 'c', 'aa', 'ab', 'ac', 'ba', 'bb',
'bc', 'ca', 'cb', 'cc', 'aaa',
'aba', 'abc',
'aca', 'acb', 'acc'}
ladder = WordLadderPuzzle('aaa', 'abc', word_set)
bfs_solver = BfsSolver()
act = bfs_solver.solve(ladder)
acc = set()
self.assertTrue(len(act) == 3)
self.assertTrue(act[-1].is_solved())
self.assertEqual([ladder, WordLadderPuzzle('aba', 'abc', word_set),
WordLadderPuzzle('abc', 'abc', word_set)], act)
acc.add(str(act[-2]))
act = bfs_solver.solve(ladder, acc)
self.assertTrue(len(act) == 4)
self.assertTrue(act[-1].is_solved())
self.assertEqual([ladder, WordLadderPuzzle('aca', 'abc', word_set),
WordLadderPuzzle('acc', 'abc', word_set),
WordLadderPuzzle('abc', 'abc', word_set)], act)
def test_dfs_ladder(self):
word_set = {'a', 'b', 'c', 'aa', 'ab', 'ac', 'ba', 'bb',
'bc', 'ca', 'cb', 'cc', 'aaa',
'aba', 'abc',
'aca', 'acb', 'acc'}
ladder = WordLadderPuzzle('aaa', 'abc', word_set)
dfs_solver = DfsSolver()
acc = {str(WordLadderPuzzle('aca', 'abc', word_set))}
act = dfs_solver.solve(ladder, acc)
self.assertTrue(len(act) == 3)
self.assertTrue(act[-1].is_solved())
self.assertEqual([ladder, WordLadderPuzzle('aba', 'abc', word_set),
WordLadderPuzzle('abc', 'abc', word_set)], act)
acc = set()
acc.add(str(act[-2]))
acc.add(str(WordLadderPuzzle('acb', 'abc', word_set)))
act = dfs_solver.solve(ladder, acc)
self.assertTrue(len(act) == 4)
self.assertTrue(act[-1].is_solved())
self.assertEqual([ladder, WordLadderPuzzle('aca', 'abc', word_set),
WordLadderPuzzle('acc', 'abc', word_set),
WordLadderPuzzle('abc', 'abc', word_set)], act)
@patch('solver.BfsSolver.solve', return_value=[1])
def test_get_difficulty(self, mock_solver):
ladder = WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'})
res = ladder.get_difficulty()
print(res)
self.assertTrue(mock_solver.called)
self.assertTrue(res, TRIVIAL)
@patch('solver.BfsSolver.solve', return_value=[1, 2, 3])
def test_get_difficulty_2(self, mock_solver):
ladder = WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'})
res = ladder.get_difficulty()
print(res)
self.assertTrue(mock_solver.called)
self.assertTrue(res, EASY)
@patch('solver.BfsSolver.solve', return_value=[1, 2, 3, 4])
def test_get_difficulty_3(self, mock_solver):
ladder = WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'})
res = ladder.get_difficulty()
print(res)
self.assertTrue(mock_solver.called)
self.assertTrue(res, MEDIUM)
@patch('solver.BfsSolver.solve', return_value=[1, 2, 3, 4, 5, 6])
def test_get_difficulty_4(self, mock_solver):
ladder = WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'})
res = ladder.get_difficulty()
print(res)
self.assertTrue(mock_solver.called)
self.assertTrue(res, HARD)
@patch('solver.BfsSolver.solve', return_value=[])
def test_get_difficulty_5(self, mock_solver):
ladder = WordLadderPuzzle('bb', 'cc', {'bb', 'bc', 'cc'})
res = ladder.get_difficulty()
print(res)
self.assertTrue(mock_solver.called)
self.assertTrue(res, IMPOSSIBLE)
class Part4Test(TestUtil):
def setUp(self) -> None:
self.leaf = ExprTree(1, [])
self.single = ExprTree('+', [ExprTree(1, []), ExprTree(2, [])])
self.chain = ExprTree('*', [ExprTree('a', []), ExprTree('b', [])])
self.compound = ExprTree('*', [ExprTree('a', []), ExprTree('*', [
ExprTree('a', []),
ExprTree('*', [ExprTree('a', []), ExprTree('a', [])])])])
self.compound_2 = ExprTree('*',
[ExprTree('a', []),
ExprTree('*',
[ExprTree(
'b',
[]),
ExprTree(
'*', [
ExprTree(
'c',
[]),
ExprTree(
'd',
[])])])])
self.compound_3 = ExprTree('*',
[ExprTree('+',
[ExprTree('+',
[ExprTree('a', []),
ExprTree('b', [])]),
ExprTree('c', [])]),
ExprTree('+',
[ExprTree('d', []),
ExprTree('+',
[ExprTree('e', []),
ExprTree('f', [])])])
])
def tearDown(self) -> None:
pass
def test_eval_1(self):
single = ExprTree(1, [])
self.assertTrue(single.eval({}) == 1)
def test_eval_2(self):
single = ExprTree('+', [ExprTree(1, []), ExprTree(2, [])])
self.assertTrue(single.eval({}) == 3)
def test_eval_nested(self):
env = {'a': 0, 'b': 0}
nest = ExprTree('*', [ExprTree('a', []), ExprTree('b', [])])
self.assertTrue(nest.eval(env) == 0)
env['a'] = 1
self.assertTrue(nest.eval(env) == 0)
env['b'] = 2
self.assertTrue(nest.eval(env) == 2)
def test_eval_nested_2(self):
nest = ExprTree('*', [ExprTree('a', []),
ExprTree('*',
[ExprTree('a', []),
ExprTree('*', [
ExprTree('a',
[]),
ExprTree('a',
[])])])])
self.assertTrue(nest.eval({'a': 1}) == 1)
self.assertTrue(nest.eval({'a': 2}) == 2 ** 4)
def test_eq_1(self):
self.assertTrue(ExprTree(1, []) == ExprTree(1, []))
def test_eq_2(self):
self.assertTrue(ExprTree('+', [ExprTree(1, []), ExprTree(1, [])]) ==
ExprTree('+', [ExprTree(1, []), ExprTree(1, [])]))
def test_substitute(self):
tree = ExprTree(1, [])
tree.substitute({'a': 1})
self.assertTrue(str(tree) == '1')
def test_substitute_2(self):
tree = ExprTree('+', [ExprTree('a', []), ExprTree('b', [])])
self.assertTrue(str(tree) == '(a + b)')
tree.substitute({'a': 1})
self.assertTrue(str(tree) == '(1 + b)')
tree.substitute({'b': 2})
self.assertTrue(str(tree) == '(1 + 2)')
def test_substitute_3(self):
nest = ExprTree('*', [ExprTree('a', []),
ExprTree('*',
[ExprTree('b', []),
ExprTree('*', [
ExprTree('c',
[]),
ExprTree('d',
[])])])])
self.assertTrue(str(nest) == '(a * (b * (c * d)))')
nest.substitute({'a': 1})
self.assertTrue(str(nest) == '(1 * (b * (c * d)))')
nest.substitute({'b': 2})
self.assertTrue(str(nest) == '(1 * (2 * (c * d)))')
nest.substitute({'c': 3})
self.assertTrue(str(nest) == '(1 * (2 * (3 * d)))')
nest.substitute({'d': 4})
self.assertTrue(str(nest) == '(1 * (2 * (3 * 4)))')
nest.substitute({'*': '+'})
self.assertTrue(str(nest) == '(1 + (2 + (3 + 4)))')
def test_substitute_4(self):
self.assertTrue(str(self.compound) == '(a * (a * (a * a)))')
for i in range(1, 10):
tree = self.compound.copy()
tree.substitute({'a': i})
self.assertTrue(str(tree) == f'({i} * ({i} * ({i} * {i})))')
def test_lookup_1(self):
a = {}
self.leaf.populate_lookup(a)
self.assertTrue(a == {})
def test_lookup_2(self):
a = {}
self.single.populate_lookup(a)
self.assertTrue(a == {})
def test_lookup_3(self):
a = {}
self.compound.populate_lookup(a)
self.assertTrue(a == {'a': 0})
def test_lookup_4(self):
a = {}
self.compound_2.populate_lookup(a)
self.assertTrue(a == {'a': 0, 'b': 0, 'c': 0, 'd': 0})
def test_construct_1(self):
start = [[1]]
res = construct_from_list(start)
self.assertTrue(res == ExprTree(1, []))
def test_construct_2(self):
start = [['+'], [1, 2]]
res = construct_from_list(start)
self.assertTrue(
res == ExprTree('+', [ExprTree(1, []), ExprTree(2, [])]))
def test_construct_3(self):
start = [['*'], ['a', '*'], ['a', '*'], ['a', 'a']]
res = construct_from_list(start)
self.assertTrue(res == self.compound)
def test_construct_4(self):
start = [['*'], ['+', '+'], ['+', 'c'], ['d', '+'], ['a', 'b'],
['e', 'f']]
res = construct_from_list(start)
self.assertTrue(res == self.compound_3)
class Part5Test(TestUtil):
def setUp(self) -> None:
self.leaf = ExprTree(1, [])
self.single = ExprTree('+', [ExprTree(1, []), ExprTree(2, [])])
self.chain = ExprTree('*', [ExprTree('a', []), ExprTree('b', [])])
self.compound = ExprTree('*',
[ExprTree('a', []),
ExprTree('*', [
ExprTree('a', []),
ExprTree('*', [ExprTree('a', []),
ExprTree('a', [])])])])
self.compound_2 = ExprTree('*',
[ExprTree('a', []),
ExprTree('*',
[ExprTree(
'b',
[]),
ExprTree(
'*', [
ExprTree(
'c',
[]),
ExprTree(
'd',
[])])])])
def tearDown(self) -> None:
pass
def test_is_solved(self):
problem = ExpressionTreePuzzle(self.leaf, 1)
self.assertTrue(problem.is_solved())
def test_is_solved_2(self):
problem = ExpressionTreePuzzle(self.single, 2)
self.assertFalse(problem.is_solved())
def test_is_solved_3(self):
problem = ExpressionTreePuzzle(self.compound, 1)
self.assertFalse(problem.is_solved())
problem.variables = {'a': 1}
self.assertTrue(problem.is_solved())
def test_is_solved_4(self):
problem = ExpressionTreePuzzle(self.compound_2, 1)
self.assertFalse(problem.is_solved())
problem.variables['a'] = 1
self.assertFalse(problem.is_solved())
problem.variables.update({'b': 1})
self.assertFalse(problem.is_solved())
problem.variables.update({'c': 1})
self.assertFalse(problem.is_solved())
problem.variables.update({'d': 1})
self.assertTrue(problem.is_solved())
problem.variables.update({'d': 2})
self.assertFalse(problem.is_solved())
def test_extension(self):
problem = ExpressionTreePuzzle(self.leaf, 1)
self.assertTrue(problem.extensions() == [])
def test_extension_2(self):
problem = ExpressionTreePuzzle(self.single, 1)
self.assertTrue(problem.extensions() == [])
def test_extension_3(self):
problem = ExpressionTreePuzzle(self.compound, 1)
ext = problem.extensions()
self.assertTrue(len(ext) == 9)
for sub in ext:
self.assertTrue(len(sub.extensions()) == 0)
def test_extension_4(self):
problem = ExpressionTreePuzzle(self.compound_2, 1)
ext = problem.extensions()
self.assertTrue(len(ext) == 36)
def test_extension_5(self):
problem = ExpressionTreePuzzle(self.chain, 1)
ext = problem.extensions()
self.assertTrue(len(ext) == 18)
for sub in ext:
self.assertTrue(len(sub.extensions()) == 9)
if __name__ == '__main__':
unittest.main(exit=False, verbosity=2)