def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.sut = StartingCoverageOperator()
class TestStartingCoverageOperator(CoverageOperatorTestCommon):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.sut = StartingCoverageOperator()
def test_operators_execute_with_some_chance(self):
# Given:
self.environment_mock.get_sentence_length.return_value = 1
self.environment_mock.is_sentence_positive.return_value = True
# When/Then:
self.operator_executes_with_some_chance_scenario()
def test_given_sentence_of_length_greater_than_1_should_not_cover_it(self):
# Given:
self.environment_mock.get_sentence_length.return_value = 5
# When:
result = self.sut.cover(self.cyk_service_mock, self.environment_mock,
self.rule_population_mock, self.coordinates)
# Then:
assert_that(result, is_(EmptyProduction(Detector(self.coordinates))))
def test_given_positivity_of_sentence_unknown__no_coverage_should_occur(self):
# Given:
self.environment_mock.get_sentence_length.return_value = 1
self.environment_mock.is_sentence_positive.return_value = None
# When:
result = self.sut.cover(self.cyk_service_mock, self.environment_mock,
self.rule_population_mock, self.coordinates)
# Then:
assert_that(result, is_(EmptyProduction(Detector(self.coordinates))))
def test_given_negative_sentence__no_coverage_should_occur(self):
# Given:
self.environment_mock.get_sentence_length.return_value = 1
self.environment_mock.is_sentence_positive.return_value = False
# When:
result = self.sut.cover(self.cyk_service_mock, self.environment_mock,
self.rule_population_mock, self.coordinates)
# Then:
assert_that(result, is_(EmptyProduction(Detector(self.coordinates))))
def test_given_positive_sentence_of_length_1__coverage_should_occur(self):
# Given:
self.environment_mock.get_sentence_symbol.return_value = Symbol(hash('a'))
self.environment_mock.get_sentence_length.return_value = 1
self.environment_mock.is_sentence_positive.return_value = True
# When:
result = self.sut.cover(self.cyk_service_mock, self.environment_mock,
self.rule_population_mock, self.coordinates)
# Then:
assert_that(result, is_(equal_to(Production(
Detector(self.coordinates),
TerminalRule(self.rule_population_mock.starting_symbol, Symbol(hash('a')))))))
