How to use _deactivate_fixture method in Slash

Best Python code snippet using slash

fixture_store.py

Source:fixture_store.py Github

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...172 for s, active_fixtures in self._active_fixtures_by_scope.items():173 if s <= scope:174 for active_fixture in reversed(list(active_fixtures.values())):175 with handling_exceptions(swallow=True):176 self._deactivate_fixture(active_fixture.fixture)177 assert not active_fixtures178 def ensure_known_parametrization(self, parametrization):179 if parametrization.info.id not in self._fixtures_by_id:180 self._fixtures_by_id[parametrization.info.id] = parametrization181 def add_fixtures_from_dict(self, d):182 for thing in d.values():183 fixture_info = getattr(thing, '__slash_fixture__', None)184 if fixture_info is None:185 continue186 assert self.get_current_namespace() is self._namespaces[-1]187 fixture_info = self.add_fixture(thing).__slash_fixture__188 self.get_current_namespace().add_name(189 fixture_info.name, fixture_info.id)190 def add_fixture(self, fixture_func):191 fixture_info = fixture_func.__slash_fixture__192 existing_fixture = self._fixtures_by_id.get(fixture_info.id)193 if existing_fixture is not None:194 return existing_fixture.fixture_func195 if is_valid_test_name(fixture_info.name):196 raise InvalidFixtureName('Invalid fixture name: {.name}'.format(fixture_info))197 fixture_object = Fixture(self, fixture_func)198 current_namespace = self._namespaces[-1]199 current_namespace.add_name(fixture_info.name, fixture_info.id)200 self.register_fixture_id(fixture_object)201 return fixture_func202 def register_fixture_id(self, f):203 if f.info.id in self._fixtures_by_id:204 return205 self._fixtures_by_id[f.info.id] = f206 self._unresolved_fixture_ids.add(f.info.id)207 def get_fixture_by_name(self, name, namespace=None):208 if namespace is None:209 namespace = self._namespaces[-1]210 return namespace.get_fixture_by_name(name)211 def get_fixture_by_argument(self, arg):212 return self.get_fixture_by_name(get_real_fixture_name_from_argument(arg))213 def get_fixture_by_id(self, fixture_id):214 return self._fixtures_by_id[fixture_id]215 def get_fixture_dict(self, fixture_names, namespace=None, get_values=True, skip_names=frozenset()):216 returned = {}217 if namespace is None:218 namespace = self.get_current_namespace()219 fixtures_set = self._get_fixtures_set(fixture_names, skip_names=skip_names, namespace=namespace)220 for required_name, fixture in fixtures_set:221 if get_values:222 fixture = self.get_fixture_value(fixture, name=required_name)223 if required_name in fixture_names or [element for element in fixture_names if required_name in element]:224 returned[required_name] = fixture225 return returned226 def _get_fixtures_set(self, fixture_names, namespace=None, skip_names=frozenset(), fixtures_set=None):227 if fixtures_set is None:228 fixtures_set = OrderedSet()229 for element in fixture_names:230 if isinstance(element, tuple):231 required_name, real_name = element232 else:233 required_name = real_name = element234 if required_name in skip_names:235 continue236 if element == 'this':237 continue238 fixture = namespace.get_fixture_by_name(real_name)239 fixtures_set.add((required_name, fixture))240 if hasattr(fixture.fixture_func, "__extrafixtures__"):241 self._get_fixtures_set(fixture.fixture_func.__extrafixtures__, skip_names=skip_names,242 namespace=namespace, fixtures_set=fixtures_set)243 return fixtures_set244 def get_fixture_value(self, fixture, name=None):245 if name is None:246 name = fixture.info.name247 value = self._compute_fixture_value(name, fixture)248 return value249 def get_value(self, variation, parameter_or_fixture):250 fixture_id = parameter_or_fixture.info.id251 fixtureobj = self.get_fixture_by_id(parameter_or_fixture.info.id)252 if isinstance(fixtureobj, Parametrization):253 value = parameter_or_fixture.get_value_by_index(variation.param_value_indices[fixture_id])254 else:255 value = self.get_fixture_value(parameter_or_fixture)256 return value257 def iter_parametrization_variations(self, fixture_ids=(), funcs=(), methods=()):258 if self._unresolved_fixture_ids:259 raise UnresolvedFixtureStore()260 variation_factory = VariationFactory(self)261 for fixture_id in fixture_ids:262 variation_factory.add_needed_fixture_id(fixture_id)263 for func in funcs:264 variation_factory.add_needed_fixtures_from_function(func)265 for method in methods:266 variation_factory.add_needed_fixtures_from_method(method)267 return variation_factory.iter_variations()268 def _compute_fixture_value(self, name, fixture, relative_name=None):269 if relative_name is None:270 relative_name = name271 assert not fixture.is_parameter()272 if fixture.info.id in self._computing:273 raise CyclicFixtureDependency(274 'Fixture {!r} is a part of a dependency cycle!'.format(name))275 active_fixture = self.get_active_fixture(fixture)276 if active_fixture is not None:277 if self._is_active_fixture_valid(fixture):278 _logger.trace("Fixture {} did not change", fixture)279 return active_fixture.value280 else:281 _logger.trace("Fixture {} no longer valid. Recomputing", fixture)282 self._deactivate_fixture(active_fixture.fixture)283 self._computing.add(fixture.info.id)284 try:285 fixture_value = self._call_fixture(fixture, relative_name=relative_name)286 except:287 exc_info = sys.exc_info()288 self._deactivate_fixture(fixture)289 reraise(*exc_info)290 finally:291 self._computing.discard(fixture.info.id)292 return fixture_value293 def _is_active_fixture_valid(self, fixture):294 assert fixture.info.id in self._active_fixture_dependencies, "Fixture dependencies not updated"295 new_dependencies = self._compute_fixture_dependencies(fixture)296 return new_dependencies.issubset(self._active_fixture_dependencies[fixture.info.id])297 def _compute_fixture_dependencies(self, fixture):298 param_indices = self._compute_all_needed_parametrization_ids(fixture)299 if not param_indices:300 return frozenset()301 assert ctx.session is not None, "Dependency computation requires an active session"302 variation = ctx.session.variations.get_current_variation()303 assert variation is not None, "Dependency computation requires current variation"304 return frozenset((param_id, variation.param_value_indices[param_id])305 for param_id in self._compute_all_needed_parametrization_ids(fixture))306 def _call_fixture(self, fixture, relative_name):307 assert relative_name308 active_fixture = ActiveFixture(fixture)309 kwargs = {}310 if fixture.keyword_arguments is None:311 raise UnresolvedFixtureStore('Fixture {} is unresolved!'.format(fixture.info.name))312 for required_name, needed_fixture in fixture.keyword_arguments.items():313 if needed_fixture.is_parameter():314 continue315 kwargs[required_name] = self._compute_fixture_value(316 required_name, needed_fixture,317 relative_name='{} -> {}'.format(relative_name, required_name))318 assert fixture.info.id not in self._active_fixtures_by_scope[fixture.info.scope]319 _logger.trace("Activating fixture {}...", fixture)320 self._active_fixtures_by_scope[fixture.info.scope][fixture.info.id] = active_fixture321 self._active_fixture_dependencies[fixture.info.id] = self._compute_fixture_dependencies(fixture)322 prev_context_fixture = slash_context.fixture323 slash_context.fixture = active_fixture324 try:325 returned = active_fixture.value = fixture.get_value(kwargs, active_fixture)326 finally:327 slash_context.fixture = prev_context_fixture328 _logger.trace(' -- {} = {!r}', relative_name, returned)329 return returned330 def _deactivate_fixture(self, fixture):331 # in most cases it will be the last active fixture in its scope332 active = self._active_fixtures_by_scope[fixture.info.scope].pop(fixture.info.id, None)333 self._active_fixture_dependencies.pop(fixture.info.id, None)334 if active is not None:335 active.do_cleanups()336 def resolve(self):337 while self._unresolved_fixture_ids:338 fixture = self._fixtures_by_id[self._unresolved_fixture_ids.pop()]...

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