def save_population_operation(self):
population = RulePopulation(self.STARTING_SYMBOL)
for rule_model in self.population_editor.rules:
if rule_model.is_terminal:
parent, terminal_word = Rule.from_human_friendly_representation(
population.symbol_shift(),
population.starting_symbol,
population.universal_symbol,
rule_model.parent,
rule_model.left_child,
rule_model.right_child
)
terminal_symbol = self.translator.word_to_symbol(terminal_word)
population.add_rule(Rule(parent, terminal_symbol), self.randomizer)
else:
parent, left, right = Rule.from_human_friendly_representation(
population.symbol_shift(),
population.starting_symbol,
population.universal_symbol,
rule_model.parent,
rule_model.left_child,
rule_model.right_child
)
population.add_rule(Rule(parent, left, right), self.randomizer)
name = os.path.basename(self.population_editor.population_path).split('.')[0]
path = os.path.dirname(self.population_editor.population_path)
self.simulation_executor.save_population_data(population, path, name)
def create_rules(self, rules):
rule_population = RulePopulation(Symbol('S'), universal_symbol=Symbol('U'))
for rule in rules:
rule_population.add_rule(rule, self.randomizer)
return rule_population
class TestRulePopulation(unittest.TestCase):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.sut = RulePopulation('S')
self.rules = [
Rule('A', 'B', 'C'),
Rule('D', 'B', 'C'),
Rule('A', 'J', 'C'),
Rule('A', 'B', 'J')
]
self.randomizer_mock = create_autospec(Randomizer)
def add_rules(self):
for rule in self.rules:
self.sut.add_rule(rule, self.randomizer_mock)
assert_that(self.sut.get_all_non_terminal_rules(), contains_inanyorder(*self.rules))
def test_adding_rule_should_result_in_storing_it(self):
# Given:
self.add_rules()
# When/Then:
assert_that(self.sut.get_rules_by_right(('B', 'C')),
only_contains(self.rules[0], self.rules[1]))
assert_that(self.sut.get_rules_by_right(('B', 'B')), is_(empty()))
assert_that(self.sut.get_rules_by_right(('A', 'B')), is_(empty()))
assert_that(calling(self.sut.get_rules_by_right).with_args(('A',)),
raises(RulePopulationAccessViolationError))
assert_that(calling(self.sut.get_rules_by_right).with_args(('A', 'B', 'J')),
raises(RulePopulationAccessViolationError))
def test_should_be_able_to_add_terminal_rule(self):
rule_a = TerminalRule(Symbol('A'), Symbol('a'))
rule_b = TerminalRule(Symbol('B'), Symbol('a'))
self.sut.add_rule(rule_a, self.randomizer_mock)
self.sut.add_rule(rule_b, self.randomizer_mock)
assert_that(self.sut._rules_by_right, is_(empty()))
assert_that(self.sut.get_terminal_rules(Symbol('a')), only_contains(rule_a, rule_b))
assert_that(self.sut.get_terminal_rules(Symbol('b')), is_(empty()))
assert_that(self.sut.get_terminal_rules(), only_contains(rule_a, rule_b))
def test_universal_symbol_should_work_properly(self):
# Given:
rule_a = TerminalRule(self.sut.universal_symbol, Symbol('a'))
rule_b = TerminalRule(self.sut.universal_symbol, Symbol('b'))
# When:
self.sut.add_rule(rule_a, self.randomizer_mock)
self.sut.add_rule(rule_b, self.randomizer_mock)
# Then:
assert_that(self.sut._rules_by_right, is_(empty()))
assert_that(self.sut.get_terminal_rules(Symbol('a')), only_contains(rule_a))
assert_that(self.sut.get_terminal_rules(Symbol('b')), only_contains(rule_b))
assert_that(self.sut.get_terminal_rules(), only_contains(rule_a, rule_b))
def test_should_be_able_to_obtain_random_population(self):
# Given:
self.add_rules()
self.randomizer_mock.sample.return_value = [Rule('A', 'J', 'C'), Rule('D', 'B', 'C')]
# When:
rules = self.sut.get_random_rules(self.randomizer_mock, False, 2)
# Then:
assert_that(rules, only_contains(Rule('D', 'B', 'C'), Rule('A', 'J', 'C')))
assert_that(self.randomizer_mock.sample.called)
def test_should_be_able_to_remove_a_rule(self):
# Given:
self.add_rules()
assert_that(
self.sut.get_rules_by_right((self.rules[0].left_child, self.rules[0].right_child)),
only_contains(self.rules[0], self.rules[1])
)
# When:
self.sut.remove_rule(self.rules[0])
# Then:
assert_that(
self.sut.get_rules_by_right((self.rules[0].left_child, self.rules[0].right_child)),
only_contains(self.rules[1])
)
def test_should_be_able_to_obtain_random_population_matching_filter(self):
# Given:
self.add_rules()
filter = lambda x: x.right_child == 'C'
self.randomizer_mock.sample.return_value = [Rule('A', 'J', 'C'), Rule('D', 'B', 'C')]
# When:
rules = self.sut.get_random_rules_matching_filter(self.randomizer_mock, False, 2, filter)
# Then:
assert_that(rules, only_contains(Rule('D', 'B', 'C'), Rule('A', 'J', 'C')))
assert_that(self.randomizer_mock.sample.call_count, is_(equal_to(1)))
def test_should_know_if_rule_already_exists(self):
# Given:
self.add_rules()
not_added_rule = Rule('J', 'J', 'J')
# When:
for rule in self.rules:
assert_that(self.sut.has_rule(rule))
assert_that(not_(self.sut.has_rule(not_added_rule)))
