def _resolve_single_arg(self, arg: Callable, cache: FixtureCache) -> Union[Any, Fixture]: """ Get the fixture return value If the fixture has been cached, return the value from the cache. Otherwise, call the fixture function and return the value. """ if not hasattr(arg, "ward_meta"): return arg fixture = Fixture(arg) if cache.contains(fixture, fixture.scope, self.scope_key_from(fixture.scope)): return cache.get(fixture.key, fixture.scope, self.scope_key_from(fixture.scope)) has_deps = len(fixture.deps()) > 0 is_generator = fixture.is_generator_fixture if not has_deps: try: if is_generator: fixture.gen = arg() fixture.resolved_val = next(fixture.gen) else: fixture.resolved_val = arg() except Exception as e: raise FixtureError( f"Unable to resolve fixture '{fixture.name}'") from e scope_key = self.scope_key_from(fixture.scope) cache.cache_fixture(fixture, scope_key) return fixture children_defaults = self._get_default_args(func=arg) children_resolved = {} for name, child_fixture in children_defaults.items(): child_resolved = self._resolve_single_arg(child_fixture, cache) children_resolved[name] = child_resolved try: args_to_inject = self._unpack_resolved(children_resolved) if is_generator: fixture.gen = arg(**args_to_inject) fixture.resolved_val = next(fixture.gen) else: fixture.resolved_val = arg(**args_to_inject) except Exception as e: raise FixtureError( f"Unable to resolve fixture '{fixture.name}'") from e scope_key = self.scope_key_from(fixture.scope) cache.cache_fixture(fixture, scope_key) return fixture
def _(f=exception_raising_fixture): cache = FixtureCache() cache.cache_fixture(f, "test_id") assert cache.get(f.key, Scope.Test, "test_id") == f
def _(f=exception_raising_fixture): cache = FixtureCache() cache.cache_fixture(f, "test_id") expect(cache.get(f.key, Scope.Test, "test_id")).equals(f)