def test_invalid_get_no_subject_args() -> None:
async def rule():
Get(
STR,
)
with pytest.raises(GetParseError):
collect_awaitables(rule)
def wrapper(func):
if not inspect.isfunction(func):
raise ValueError(
"The @rule decorator must be applied innermost of all decorators."
)
awaitables = FrozenOrderedSet(collect_awaitables(func))
validate_requirements(func_id, parameter_types, awaitables, cacheable)
# Set our own custom `__line_number__` dunder so that the engine may visualize the line number.
func.__line_number__ = func.__code__.co_firstlineno
func.rule = TaskRule(
return_type,
parameter_types,
func,
input_gets=awaitables,
canonical_name=canonical_name,
desc=desc,
level=level,
cacheable=cacheable,
)
return func
def assert_awaitables(func, awaitable_types: Iterable[Tuple[type, type]]):
gets = collect_awaitables(func)
get_types = tuple((get.input_type, get.output_type) for get in gets)
assert get_types == tuple(awaitable_types)
def test_invalid_get_invalid_product_type_not_a_type_name() -> None:
async def rule():
Get(call(), STR("bob")) # noqa: F821
with pytest.raises(GetParseError):
collect_awaitables(rule)
def test_invalid_get_invalid_subject_arg_no_constructor_call() -> None:
async def rule():
Get(STR, "bob")
with pytest.raises(GetParseError):
collect_awaitables(rule)
def test_invalid_get_too_many_subject_args() -> None:
async def rule():
Get(STR, INT, "bob", 3)
with pytest.raises(GetParseError):
collect_awaitables(rule)
def test_valid_get_unresolvable_subject_declared_type() -> None:
async def rule():
Get(int, DNE, "bob") # noqa: F821
with pytest.raises(ValueError):
collect_awaitables(rule)
def test_valid_get_unresolvable_product_type() -> None:
async def rule():
Get(DNE, STR(42)) # noqa: F821
with pytest.raises(ValueError):
collect_awaitables(rule)
