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How to use _compute_fixture_dependencies method in Slash

Best Python code snippet using slash

fixture_store.py

Source:fixture_store.py

...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()...

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