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Use get_typing_hints instead of __annotations__ to resolve types in Python 3.10 #297

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Use get_typing_hints instead of __annotations__ to resolve types in Python 3.10 #297

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c61d3d9
Use get_typing_hints instead of __annotations__ to resolve types in P…
tirkarthi Apr 7, 2021
82403dc
Handle None in get_type_hints
tirkarthi Apr 7, 2021
b307fd4
Fix isort error.
tirkarthi Apr 7, 2021
3cc34a3
Handle KeyError to return empty annotations.
tirkarthi Apr 12, 2021
6d74c1b
Catch all exceptions to return empty annotations.
tirkarthi Apr 14, 2021
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20 changes: 17 additions & 3 deletions testslide/strict_mock.py
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Expand Up @@ -7,7 +7,17 @@
import inspect
import os.path
from types import FrameType
from typing import TYPE_CHECKING, Any, Callable, Dict, List, Optional, Type, Union
from typing import (
TYPE_CHECKING,
Any,
Callable,
Dict,
List,
Optional,
Type,
Union,
get_type_hints,
)

import testslide.lib
import testslide.mock_callable
Expand Down Expand Up @@ -623,8 +633,12 @@ def __validate_attribute_type(self, name: str, value: Any) -> None:
):
return

if hasattr(self._template, "__annotations__"):
annotations = self._template.__annotations__
if self._template is not None:
try:
annotations = get_type_hints(self._template)
except KeyError:
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can we do except Exception just to make sure we dont break tests when we fail to get typehints for any funny modules?

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KeyError seemed more specific to the modules with different __module__ . Are there any other failures that expose a bug with get_type_hints? I couldn't see the test failures since it's private.

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https://www.python.org/dev/peps/pep-0563/#runtime-annotation-resolution-and-class-decorators it can throw NameError on metaclasses

# Some modules can throw KeyError : https://bugs.python.org/issue41515
annotations = {}
if name in annotations:
testslide.lib._validate_argument_type(annotations[name], name, value)

Expand Down