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"""Sanity test which executes mypy.""" from __future__ import annotations import dataclasses import os import re import typing as t from . import ( SanityMultipleVersion, SanityMessage, SanityFailure, SanitySuccess, SanitySkipped, SanityTargets, create_sanity_virtualenv, ) from ...constants import ( CONTROLLER_PYTHON_VERSIONS, REMOTE_ONLY_PYTHON_VERSIONS, ) from ...test import ( TestResult, ) from ...target import ( TestTarget, ) from ...util import ( SubprocessError, display, parse_to_list_of_dict, ANSIBLE_TEST_CONTROLLER_ROOT, ApplicationError, is_subdir, ) from ...util_common import ( intercept_python, ) from ...ansible_util import ( ansible_environment, ) from ...config import ( SanityConfig, ) from ...host_configs import ( PythonConfig, VirtualPythonConfig, ) class MypyTest(SanityMultipleVersion): """Sanity test which executes mypy.""" ansible_only = True vendored_paths = ( 'lib/ansible/module_utils/six/__init__.py', 'lib/ansible/module_utils/distro/_distro.py', 'lib/ansible/module_utils/compat/_selectors2.py', ) def filter_targets(self, targets: list[TestTarget]) -> list[TestTarget]: """Return the given list of test targets, filtered to include only those relevant for the test.""" return [target for target in targets if os.path.splitext(target.path)[1] == '.py' and target.path not in self.vendored_paths and ( target.path.startswith('lib/ansible/') or target.path.startswith('test/lib/ansible_test/_internal/') or target.path.startswith('test/lib/ansible_test/_util/target/sanity/import/'))] @property def error_code(self) -> t.Optional[str]: """Error code for ansible-test matching the format used by the underlying test program, or None if the program does not use error codes.""" return 'ansible-test' @property def needs_pypi(self) -> bool: """True if the test requires PyPI, otherwise False.""" return True def test(self, args: SanityConfig, targets: SanityTargets, python: PythonConfig) -> TestResult: settings = self.load_processor(args, python.version) paths = [target.path for target in targets.include] virtualenv_python = create_sanity_virtualenv(args, args.controller_python, self.name) if args.prime_venvs: return SanitySkipped(self.name, python_version=python.version) if not virtualenv_python: display.warning(f'Skipping sanity test "{self.name}" due to missing virtual environment support on Python {args.controller_python.version}.') return SanitySkipped(self.name, python.version) controller_python_versions = CONTROLLER_PYTHON_VERSIONS remote_only_python_versions = REMOTE_ONLY_PYTHON_VERSIONS contexts = ( MyPyContext('ansible-test', ['test/lib/ansible_test/_util/target/sanity/import/'], controller_python_versions), MyPyContext('ansible-test', ['test/lib/ansible_test/_internal/'], controller_python_versions), MyPyContext('ansible-core', ['lib/ansible/'], controller_python_versions), MyPyContext('modules', ['lib/ansible/modules/', 'lib/ansible/module_utils/'], remote_only_python_versions), ) unfiltered_messages: list[SanityMessage] = [] for context in contexts: if python.version not in context.python_versions: continue unfiltered_messages.extend(self.test_context(args, virtualenv_python, python, context, paths)) notices = [] messages = [] for message in unfiltered_messages: if message.level != 'error': notices.append(message) continue match = re.search(r'^(?P<message>.*) {2}\[(?P<code>.*)]$', message.message) messages.append(SanityMessage( message=match.group('message'), path=message.path, line=message.line, column=message.column, level=message.level, code=match.group('code'), )) for notice in notices: display.info(notice.format(), verbosity=3) # The following error codes from mypy indicate that results are incomplete. # That prevents the test from completing successfully, just as if mypy were to traceback or generate unexpected output. fatal_error_codes = { 'import', 'syntax', } fatal_errors = [message for message in messages if message.code in fatal_error_codes] if fatal_errors: error_message = '\n'.join(error.format() for error in fatal_errors) raise ApplicationError(f'Encountered {len(fatal_errors)} fatal errors reported by mypy:\n{error_message}') paths_set = set(paths) # Only report messages for paths that were specified as targets. # Imports in our code are followed by mypy in order to perform its analysis, which is important for accurate results. # However, it will also report issues on those files, which is not the desired behavior. messages = [message for message in messages if message.path in paths_set] results = settings.process_errors(messages, paths) if results: return SanityFailure(self.name, messages=results, python_version=python.version) return SanitySuccess(self.name, python_version=python.version) @staticmethod def test_context( args: SanityConfig, virtualenv_python: VirtualPythonConfig, python: PythonConfig, context: MyPyContext, paths: list[str], ) -> list[SanityMessage]: """Run mypy tests for the specified context.""" context_paths = [path for path in paths if any(is_subdir(path, match_path) for match_path in context.paths)] if not context_paths: return [] config_path = os.path.join(ANSIBLE_TEST_CONTROLLER_ROOT, 'sanity', 'mypy', f'{context.name}.ini') display.info(f'Checking context "{context.name}"', verbosity=1) env = ansible_environment(args, color=False) env['MYPYPATH'] = env['PYTHONPATH'] # The --no-site-packages option should not be used, as it will prevent loading of type stubs from the sanity test virtual environment. # Enabling the --warn-unused-configs option would help keep the config files clean. # However, the option can only be used when all files in tested contexts are evaluated. # Unfortunately sanity tests have no way of making that determination currently. # The option is also incompatible with incremental mode and caching. cmd = [ # Below are arguments common to all contexts. # They are kept here to avoid repetition in each config file. virtualenv_python.path, '-m', 'mypy', '--show-column-numbers', '--show-error-codes', '--no-error-summary', # This is a fairly common pattern in our code, so we'll allow it. '--allow-redefinition', # Since we specify the path(s) to test, it's important that mypy is configured to use the default behavior of following imports. '--follow-imports', 'normal', # Incremental results and caching do not provide significant performance benefits. # It also prevents the use of the --warn-unused-configs option. '--no-incremental', '--cache-dir', '/dev/null', # The platform is specified here so that results are consistent regardless of what platform the tests are run from. # In the future, if testing of other platforms is desired, the platform should become part of the test specification, just like the Python version. '--platform', 'linux', # Despite what the documentation [1] states, the --python-version option does not cause mypy to search for a corresponding Python executable. # It will instead use the Python executable that is used to run mypy itself. # The --python-executable option can be used to specify the Python executable, with the default being the executable used to run mypy. # As a precaution, that option is used in case the behavior of mypy is updated in the future to match the documentation. # That should help guarantee that the Python executable providing type hints is the one used to run mypy. # [1] https://mypy.readthedocs.io/en/stable/command_line.html#cmdoption-mypy-python-version '--python-executable', virtualenv_python.path, '--python-version', python.version, # Below are context specific arguments. # They are primarily useful for listing individual 'ignore_missing_imports' entries instead of using a global ignore. '--config-file', config_path, ] # fmt: skip cmd.extend(context_paths) try: stdout, stderr = intercept_python(args, virtualenv_python, cmd, env, capture=True) if stdout or stderr: raise SubprocessError(cmd, stdout=stdout, stderr=stderr) except SubprocessError as ex: if ex.status != 1 or ex.stderr or not ex.stdout: raise stdout = ex.stdout pattern = r'^(?P<path>[^:]*):(?P<line>[0-9]+):((?P<column>[0-9]+):)? (?P<level>[^:]+): (?P<message>.*)$' parsed = parse_to_list_of_dict(pattern, stdout) messages = [SanityMessage( level=r['level'], message=r['message'], path=r['path'], line=int(r['line']), column=int(r.get('column') or '0'), ) for r in parsed] return messages @dataclasses.dataclass(frozen=True) class MyPyContext: """Context details for a single run of mypy.""" name: str paths: list[str] python_versions: tuple[str, ...]