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June 1, 2024 19:59
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# Adapted from | |
# https://github.com/pytorch/pytorch/blob/b505e8647547f029d0f7df408ee5f2968f757f89/test/test_public_bindings.py#L523 | |
# Original code PyTorch license https://github.com/pytorch/pytorch/blob/main/LICENSE | |
# Modifications Copyright (c) Microsoft Corporation. All rights reserved. | |
# Licensed under the MIT License. | |
from __future__ import annotations | |
import importlib | |
import itertools | |
import os | |
import pathlib | |
import pkgutil | |
from typing import Iterable | |
import unittest | |
import onnxscript | |
def _find_all_importables(pkg): | |
"""Find all importables in the project. | |
Return them in order. | |
""" | |
return sorted( | |
set( | |
itertools.chain.from_iterable( | |
_discover_path_importables(pathlib.Path(p), pkg.__name__) for p in pkg.__path__ | |
), | |
), | |
) | |
def _discover_path_importables(pkg_path: os.PathLike, pkg_name:str) -> Iterable[str]: | |
"""Yield all importables under a given path and package. | |
This is like pkgutil.walk_packages, but does *not* skip over namespace | |
packages. Taken from https://stackoverflow.com/questions/41203765/init-py-required-for-pkgutil-walk-packages-in-python3 | |
""" | |
for dir_path, _, file_names in os.walk(pkg_path): | |
pkg_dir_path = pathlib.Path(dir_path) | |
if pkg_dir_path.parts[-1] == "__pycache__": | |
continue | |
if all(pathlib.Path(_).suffix != ".py" for _ in file_names): | |
continue | |
rel_pt = pkg_dir_path.relative_to(pkg_path) | |
pkg_pref = ".".join((pkg_name, *rel_pt.parts)) | |
yield from ( | |
pkg_path | |
for _, pkg_path, _ in pkgutil.walk_packages( | |
(str(pkg_dir_path),), | |
prefix=f"{pkg_pref}.", | |
) | |
) | |
def _is_mod_public(modname: str) -> bool: | |
split_strs = modname.split('.') | |
return all(not (elem.startswith("_") or "_test" in elem) for elem in split_strs) | |
def _validate_module(modname: str, failure_list: list[str]) -> None: | |
mod = importlib.import_module(modname) | |
if not _is_mod_public(modname): | |
return | |
# verifies that each public API has the correct module name and naming semantics | |
def check_one_element(elem, modname, mod, *, is_public, is_all): | |
obj = getattr(mod, elem) | |
elem_module = getattr(obj, "__module__", None) | |
# Only used for nice error message below | |
why_not_looks_public = "" | |
if elem_module is None: | |
why_not_looks_public = "because it does not have a `__module__` attribute" | |
elem_modname_starts_with_mod = ( | |
elem_module is not None | |
and elem_module.startswith(modname) | |
and "._" not in elem_module | |
) | |
if not why_not_looks_public and not elem_modname_starts_with_mod: | |
why_not_looks_public = ( | |
f"because its `__module__` attribute (`{elem_module}`) is not within the " | |
f"onnxscript library or does not start with the submodule where it is defined (`{modname}`)" | |
) | |
# elem's name must NOT begin with an `_` and it's module name | |
# SHOULD start with it's current module since it's a public API | |
looks_public = not elem.startswith("_") and elem_modname_starts_with_mod | |
if not why_not_looks_public and not looks_public: | |
why_not_looks_public = f"because it starts with `_` (`{elem}`)" | |
if is_public != looks_public: | |
if is_public: | |
why_is_public = ( | |
f"it is inside the module's (`{modname}`) `__all__`" | |
if is_all | |
else "it is an attribute that does not start with `_` on a module that " | |
"does not have `__all__` defined" | |
) | |
fix_is_public = ( | |
f"remove it from the modules's (`{modname}`) `__all__`" | |
if is_all | |
else f"either define a `__all__` for `{modname}` or add a `_` at the beginning of the name" | |
) | |
else: | |
assert is_all | |
why_is_public = ( | |
f"it is not inside the module's (`{modname}`) `__all__`" | |
) | |
fix_is_public = f"add it from the modules's (`{modname}`) `__all__`" | |
if looks_public: | |
why_looks_public = ( | |
"it does look public because it follows the rules from the doc above " | |
"(does not start with `_` and has a proper `__module__`)." | |
) | |
fix_looks_public = "make its name start with `_`" | |
else: | |
why_looks_public = why_not_looks_public | |
if not elem_modname_starts_with_mod: | |
fix_looks_public = ( | |
"make sure the `__module__` is properly set and points to a submodule " | |
f"of `{modname}`" | |
) | |
else: | |
fix_looks_public = "remove the `_` at the beginning of the name" | |
failure_list.append(f"# {modname}.{elem}:") | |
is_public_str = "" if is_public else " NOT" | |
failure_list.append(f" - Is{is_public_str} public: {why_is_public}") | |
looks_public_str = "" if looks_public else " NOT" | |
failure_list.append( | |
f" - Does{looks_public_str} look public: {why_looks_public}" | |
) | |
# Swap the str below to avoid having to create the NOT again | |
failure_list.append( | |
" - You can do either of these two things to fix this problem:" | |
) | |
failure_list.append( | |
f" - To make it{looks_public_str} public: {fix_is_public}" | |
) | |
failure_list.append( | |
f" - To make it{is_public_str} look public: {fix_looks_public}" | |
) | |
if hasattr(mod, "__all__"): | |
public_api = mod.__all__ | |
all_api = dir(mod) | |
for elem in all_api: | |
check_one_element( | |
elem, modname, mod, is_public=elem in public_api, is_all=True | |
) | |
else: | |
all_api = dir(mod) | |
for elem in all_api: | |
if not elem.startswith("_"): | |
check_one_element(elem, modname, mod, is_public=True, is_all=False) | |
class TestPublicApiNamespace(unittest.TestCase): | |
tested_modules = ( | |
"onnxscript.ir", | |
*(_find_all_importables(onnxscript.ir)) | |
) | |
def test_correct_module_names(self): | |
""" | |
An API is considered public, if its `__module__` starts with `onnxscript.` | |
and there is no name in `__module__` or the object itself that starts with "_". | |
Each public package should either: | |
- (preferred) Define `__all__` and all callables and classes in there must have their | |
`__module__` start with the current submodule's path. Things not in `__all__` should | |
NOT have their `__module__` start with the current submodule. | |
- (for simple python-only modules) Not define `__all__` and all the elements in `dir(submod)` must have their | |
`__module__` that start with the current submodule. | |
""" | |
failure_list = [] | |
for modname in self.tested_modules: | |
_validate_module(modname, failure_list) | |
msg = ( | |
"Make sure that everything that is public is expected (in particular that the module " | |
"has a properly populated `__all__` attribute) and that everything that is supposed to be public " | |
"does look public (it does not start with `_` and has a `__module__` that is properly populated)." | |
) | |
msg += "\n\nFull list:\n" | |
msg += "\n".join(failure_list) | |
# empty lists are considered false in python | |
self.assertTrue(not failure_list, msg) | |
if __name__ == "__main__": | |
unittest.main() |
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