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from __future__ import annotations
import functools
import operator
import platform
import sys
from typing import Any
from itemloaders.utils import get_func_args
def test_get_func_args():
def f1(a, b, c):
pass
def f2(a, b=None, c=None):
pass
def f3(a, b=None, *, c=None):
pass
class A:
def __init__(self, a: Any, b: Any, c: Any):
pass
def method(self, a, b, c):
pass
class Callable:
def __call__(self, a, b, c):
pass
a = A(1, 2, 3)
cal = Callable()
partial_f1 = functools.partial(f1, None)
partial_f2 = functools.partial(f1, b=None)
partial_f3 = functools.partial(partial_f2, None)
assert get_func_args(f1) == ["a", "b", "c"]
assert get_func_args(f2) == ["a", "b", "c"]
assert get_func_args(f3) == ["a", "b", "c"]
assert get_func_args(A) == ["a", "b", "c"]
assert get_func_args(a.method) == ["a", "b", "c"]
assert get_func_args(partial_f1) == ["b", "c"]
assert get_func_args(partial_f2) == ["a", "c"]
assert get_func_args(partial_f3) == ["c"]
assert get_func_args(cal) == ["a", "b", "c"]
assert get_func_args(object) == []
assert get_func_args(str.split, stripself=True) == ["sep", "maxsplit"]
assert get_func_args(" ".join, stripself=True) == ["iterable"]
if sys.version_info >= (3, 13) or platform.python_implementation() == "PyPy":
# the correct and correctly extracted signature
assert get_func_args(operator.itemgetter(2), stripself=True) == ["obj"]
elif platform.python_implementation() == "CPython":
# ["args", "kwargs"] is a correct result for the pre-3.13 incorrect function signature
# [] is an incorrect result on even older CPython (https://github.com/python/cpython/issues/86951)
assert get_func_args(operator.itemgetter(2), stripself=True) in [
[],
["args", "kwargs"],
]
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