mirror of
https://github.com/davidhalter/typeshed.git
synced 2025-12-08 04:54:47 +08:00
422 lines
14 KiB
Python
422 lines
14 KiB
Python
#!/usr/bin/env python3
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"""Run mypy on typeshed's stdlib and third-party stubs."""
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from __future__ import annotations
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import argparse
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import os
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import re
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import sys
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import tempfile
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from contextlib import redirect_stderr, redirect_stdout
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from dataclasses import dataclass
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from io import StringIO
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from itertools import product
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from pathlib import Path
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from typing import TYPE_CHECKING, Any, NamedTuple
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if TYPE_CHECKING:
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from _typeshed import StrPath
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from typing_extensions import Annotated, TypeAlias
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import tomli
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from utils import (
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VERSIONS_RE as VERSION_LINE_RE,
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colored,
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get_gitignore_spec,
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get_recursive_requirements,
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print_error,
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print_success_msg,
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spec_matches_path,
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strip_comments,
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)
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try:
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from mypy.api import run as mypy_run
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except ImportError:
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print_error("Cannot import mypy. Did you install it?")
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sys.exit(1)
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SUPPORTED_VERSIONS = ["3.11", "3.10", "3.9", "3.8", "3.7"]
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SUPPORTED_PLATFORMS = ("linux", "win32", "darwin")
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DIRECTORIES_TO_TEST = [Path("stdlib"), Path("stubs")]
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ReturnCode: TypeAlias = int
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VersionString: TypeAlias = Annotated[str, "Must be one of the entries in SUPPORTED_VERSIONS"]
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VersionTuple: TypeAlias = tuple[int, int]
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Platform: TypeAlias = Annotated[str, "Must be one of the entries in SUPPORTED_PLATFORMS"]
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class CommandLineArgs(argparse.Namespace):
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verbose: int
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filter: list[Path]
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exclude: list[Path] | None
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python_version: list[VersionString] | None
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platform: list[Platform] | None
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def valid_path(cmd_arg: str) -> Path:
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"""Helper function for argument-parsing"""
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path = Path(cmd_arg)
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if not path.exists():
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raise argparse.ArgumentTypeError(f'"{path}" does not exist in typeshed!')
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if not (path in DIRECTORIES_TO_TEST or any(directory in path.parents for directory in DIRECTORIES_TO_TEST)):
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raise argparse.ArgumentTypeError('mypy_test.py only tests the stubs found in the "stdlib" and "stubs" directories')
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return path
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parser = argparse.ArgumentParser(
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description="Typecheck typeshed's stubs with mypy. Patterns are unanchored regexps on the full path."
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)
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parser.add_argument(
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"filter",
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type=valid_path,
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nargs="*",
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help='Test these files and directories (defaults to all files in the "stdlib" and "stubs" directories)',
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)
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parser.add_argument("-x", "--exclude", type=valid_path, nargs="*", help="Exclude these files and directories")
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parser.add_argument("-v", "--verbose", action="count", default=0, help="More output")
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parser.add_argument(
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"-p",
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"--python-version",
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type=str,
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choices=SUPPORTED_VERSIONS,
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nargs="*",
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action="extend",
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help="These versions only (major[.minor])",
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)
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parser.add_argument(
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"--platform",
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choices=SUPPORTED_PLATFORMS,
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nargs="*",
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action="extend",
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help="Run mypy for certain OS platforms (defaults to sys.platform only)",
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)
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@dataclass
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class TestConfig:
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"""Configuration settings for a single run of the `test_typeshed` function."""
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verbose: int
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filter: list[Path]
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exclude: list[Path]
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version: VersionString
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platform: Platform
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def log(args: TestConfig, *varargs: object) -> None:
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if args.verbose >= 2:
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print(*varargs)
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def match(path: Path, args: TestConfig) -> bool:
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for excluded_path in args.exclude:
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if path == excluded_path:
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log(args, path, "explicitly excluded")
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return False
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if excluded_path in path.parents:
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log(args, path, f'is in an explicitly excluded directory "{excluded_path}"')
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return False
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for included_path in args.filter:
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if path == included_path:
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log(args, path, "was explicitly included")
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return True
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if included_path in path.parents:
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log(args, path, f'is in an explicitly included directory "{included_path}"')
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return True
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log_msg = (
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f'is implicitly excluded: was not in any of the directories or paths specified on the command line: "{args.filter!r}"'
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)
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log(args, path, log_msg)
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return False
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def parse_versions(fname: StrPath) -> dict[str, tuple[VersionTuple, VersionTuple]]:
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result = {}
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with open(fname, encoding="UTF-8") as f:
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for line in f:
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line = strip_comments(line)
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if line == "":
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continue
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m = VERSION_LINE_RE.match(line)
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assert m, f"invalid VERSIONS line: {line}"
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mod: str = m.group(1)
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min_version = parse_version(m.group(2))
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max_version = parse_version(m.group(3)) if m.group(3) else (99, 99)
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result[mod] = min_version, max_version
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return result
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_VERSION_RE = re.compile(r"^([23])\.(\d+)$")
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def parse_version(v_str: str) -> tuple[int, int]:
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m = _VERSION_RE.match(v_str)
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assert m, f"invalid version: {v_str}"
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return int(m.group(1)), int(m.group(2))
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def add_files(files: list[Path], module: Path, args: TestConfig) -> None:
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"""Add all files in package or module represented by 'name' located in 'root'."""
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if module.is_file() and module.suffix == ".pyi":
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if match(module, args):
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files.append(module)
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else:
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files.extend(sorted(file for file in module.rglob("*.pyi") if match(file, args)))
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class MypyDistConf(NamedTuple):
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module_name: str
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values: dict[str, dict[str, Any]]
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# The configuration section in the metadata file looks like the following, with multiple module sections possible
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# [mypy-tests]
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# [mypy-tests.yaml]
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# module_name = "yaml"
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# [mypy-tests.yaml.values]
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# disallow_incomplete_defs = true
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# disallow_untyped_defs = true
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def add_configuration(configurations: list[MypyDistConf], distribution: str) -> None:
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with Path("stubs", distribution, "METADATA.toml").open("rb") as f:
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data = tomli.load(f)
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mypy_tests_conf = data.get("mypy-tests")
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if not mypy_tests_conf:
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return
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assert isinstance(mypy_tests_conf, dict), "mypy-tests should be a section"
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for section_name, mypy_section in mypy_tests_conf.items():
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assert isinstance(mypy_section, dict), f"{section_name} should be a section"
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module_name = mypy_section.get("module_name")
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assert module_name is not None, f"{section_name} should have a module_name key"
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assert isinstance(module_name, str), f"{section_name} should be a key-value pair"
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values = mypy_section.get("values")
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assert values is not None, f"{section_name} should have a values section"
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assert isinstance(values, dict), "values should be a section"
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configurations.append(MypyDistConf(module_name, values.copy()))
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def run_mypy(args: TestConfig, configurations: list[MypyDistConf], files: list[Path], *, testing_stdlib: bool) -> ReturnCode:
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with tempfile.NamedTemporaryFile("w+") as temp:
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temp.write("[mypy]\n")
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for dist_conf in configurations:
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temp.write(f"[mypy-{dist_conf.module_name}]\n")
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for k, v in dist_conf.values.items():
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temp.write(f"{k} = {v}\n")
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temp.flush()
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flags = get_mypy_flags(args, temp.name, testing_stdlib=testing_stdlib)
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mypy_args = [*flags, *map(str, files)]
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if args.verbose:
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print("running mypy", " ".join(mypy_args))
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stdout_redirect, stderr_redirect = StringIO(), StringIO()
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with redirect_stdout(stdout_redirect), redirect_stderr(stderr_redirect):
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returned_stdout, returned_stderr, exit_code = mypy_run(mypy_args)
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if exit_code:
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print_error("failure\n")
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captured_stdout = stdout_redirect.getvalue()
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captured_stderr = stderr_redirect.getvalue()
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if returned_stderr:
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print_error(returned_stderr)
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if captured_stderr:
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print_error(captured_stderr)
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if returned_stdout:
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print_error(returned_stdout)
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if captured_stdout:
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print_error(captured_stdout, end="")
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else:
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print_success_msg()
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return exit_code
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def get_mypy_flags(args: TestConfig, temp_name: str, *, testing_stdlib: bool) -> list[str]:
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flags = [
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"--python-version",
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args.version,
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"--show-traceback",
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"--warn-incomplete-stub",
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"--show-error-codes",
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"--no-error-summary",
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"--platform",
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args.platform,
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"--no-site-packages",
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"--custom-typeshed-dir",
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str(Path(__file__).parent.parent),
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"--strict",
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# Stub completion is checked by pyright (--allow-*-defs)
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"--allow-untyped-defs",
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"--allow-incomplete-defs",
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"--allow-subclassing-any", # Needed until we can use non-types dependencies #5768
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"--enable-error-code",
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"ignore-without-code",
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"--config-file",
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temp_name,
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]
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if not testing_stdlib:
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flags.append("--explicit-package-bases")
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return flags
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def add_third_party_files(
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distribution: str, files: list[Path], args: TestConfig, configurations: list[MypyDistConf], seen_dists: set[str]
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) -> None:
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if distribution in seen_dists:
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return
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seen_dists.add(distribution)
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stubs_dir = Path("stubs")
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dependencies = get_recursive_requirements(distribution).typeshed_pkgs
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for dependency in dependencies:
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if dependency in seen_dists:
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continue
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seen_dists.add(dependency)
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files_to_add = sorted((stubs_dir / dependency).rglob("*.pyi"))
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files.extend(files_to_add)
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for file in files_to_add:
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log(args, file, f"included as a dependency of {distribution!r}")
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root = stubs_dir / distribution
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for name in os.listdir(root):
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if name.startswith("."):
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continue
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add_files(files, (root / name), args)
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add_configuration(configurations, distribution)
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class TestResults(NamedTuple):
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exit_code: int
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files_checked: int
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def test_third_party_distribution(distribution: str, args: TestConfig) -> TestResults:
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"""Test the stubs of a third-party distribution.
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Return a tuple, where the first element indicates mypy's return code
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and the second element is the number of checked files.
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"""
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files: list[Path] = []
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configurations: list[MypyDistConf] = []
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seen_dists: set[str] = set()
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add_third_party_files(distribution, files, args, configurations, seen_dists)
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if not files and args.filter:
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return TestResults(0, 0)
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print(f"testing {distribution} ({len(files)} files)... ", end="")
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if not files:
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print_error("no files found")
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sys.exit(1)
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prev_mypypath = os.getenv("MYPYPATH")
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os.environ["MYPYPATH"] = os.pathsep.join(str(Path("stubs", dist)) for dist in seen_dists)
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code = run_mypy(args, configurations, files, testing_stdlib=False)
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if prev_mypypath is None:
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del os.environ["MYPYPATH"]
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else:
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os.environ["MYPYPATH"] = prev_mypypath
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return TestResults(code, len(files))
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def test_stdlib(code: int, args: TestConfig) -> TestResults:
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files: list[Path] = []
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stdlib = Path("stdlib")
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supported_versions = parse_versions(stdlib / "VERSIONS")
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for name in os.listdir(stdlib):
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if name == "VERSIONS" or name.startswith("."):
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continue
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module = Path(name).stem
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module_min_version, module_max_version = supported_versions[module]
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if module_min_version <= tuple(map(int, args.version.split("."))) <= module_max_version:
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add_files(files, (stdlib / name), args)
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if files:
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print(f"Testing stdlib ({len(files)} files)...")
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print("Running mypy " + " ".join(get_mypy_flags(args, "/tmp/...", testing_stdlib=True)))
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this_code = run_mypy(args, [], files, testing_stdlib=True)
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code = max(code, this_code)
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return TestResults(code, len(files))
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def test_third_party_stubs(code: int, args: TestConfig) -> TestResults:
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print("Testing third-party packages...")
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print("Running mypy " + " ".join(get_mypy_flags(args, "/tmp/...", testing_stdlib=False)))
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files_checked = 0
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gitignore_spec = get_gitignore_spec()
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for distribution in sorted(os.listdir("stubs")):
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distribution_path = Path("stubs", distribution)
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if spec_matches_path(gitignore_spec, distribution_path):
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continue
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if (
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distribution_path in args.filter
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or Path("stubs") in args.filter
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or any(distribution_path in path.parents for path in args.filter)
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):
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this_code, checked = test_third_party_distribution(distribution, args)
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code = max(code, this_code)
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files_checked += checked
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return TestResults(code, files_checked)
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def test_typeshed(code: int, args: TestConfig) -> TestResults:
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print(f"*** Testing Python {args.version} on {args.platform}")
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files_checked_this_version = 0
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stdlib_dir, stubs_dir = Path("stdlib"), Path("stubs")
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if stdlib_dir in args.filter or any(stdlib_dir in path.parents for path in args.filter):
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code, stdlib_files_checked = test_stdlib(code, args)
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files_checked_this_version += stdlib_files_checked
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print()
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if stubs_dir in args.filter or any(stubs_dir in path.parents for path in args.filter):
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code, third_party_files_checked = test_third_party_stubs(code, args)
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files_checked_this_version += third_party_files_checked
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print()
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return TestResults(code, files_checked_this_version)
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def main() -> None:
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args = parser.parse_args(namespace=CommandLineArgs())
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versions = args.python_version or SUPPORTED_VERSIONS
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platforms = args.platform or [sys.platform]
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filter = args.filter or DIRECTORIES_TO_TEST
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exclude = args.exclude or []
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code = 0
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total_files_checked = 0
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for version, platform in product(versions, platforms):
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config = TestConfig(args.verbose, filter, exclude, version, platform)
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code, files_checked_this_version = test_typeshed(code, args=config)
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total_files_checked += files_checked_this_version
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if code:
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print_error(f"--- exit status {code}, {total_files_checked} files checked ---")
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sys.exit(code)
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if not total_files_checked:
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print_error("--- nothing to do; exit 1 ---")
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sys.exit(1)
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print(colored(f"--- success, {total_files_checked} files checked ---", "green"))
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if __name__ == "__main__":
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try:
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main()
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except KeyboardInterrupt:
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print_error("\n\n!!!\nTest aborted due to KeyboardInterrupt\n!!!")
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sys.exit(1)
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