def _build_predicate(self, test: t.Callable, operation: Operation,
args: t.Iterable) -> Predicate:
"""
Generate a Predicate object based on a test function.
:param test: The test the Predicate executes.
:param operation: An `Operation` instance for the Predicate.
:return: A `Predicate` object
"""
if not self._path:
raise ValueError('Var has no path')
return Predicate(check_path(test, self._path), operation, args,
self._name)
def _build_predicate(
self,
test: t.Callable,
operation: Operation,
args: t.Iterable
) -> Predicate:
"""
Generate a Predicate object based on a test function.
:param test: The test the Predicate executes.
:param operation: An `Operation` instance for the Predicate.
:return: A `Predicate` object
"""
if not self._path:
raise ValueError('Var has no path')
return Predicate(
check_path(test, self._path),
operation,
args,
self._name
)
def test_test_path_dict(example_dict, path, expected):
# this is the same as `bool`, but let's be explicit about intentions
test = lambda lhs, value: bool(lhs) # noqa: E731
resolve_path_curried = check_path(test, path)
assert resolve_path_curried(example_dict) == expected