1923 lines
66 KiB
Python
1923 lines
66 KiB
Python
"""(Disabled by default) support for testing pytest and pytest plugins.
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PYTEST_DONT_REWRITE
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"""
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import collections.abc
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import contextlib
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import gc
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import importlib
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import os
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import platform
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import re
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import shutil
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import subprocess
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import sys
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import traceback
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from fnmatch import fnmatch
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from io import StringIO
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from pathlib import Path
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from typing import Any
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from typing import Callable
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from typing import Dict
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from typing import Generator
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from typing import Iterable
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from typing import List
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from typing import Optional
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from typing import overload
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from typing import Sequence
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from typing import TextIO
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from typing import Tuple
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from typing import Type
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from typing import TYPE_CHECKING
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from typing import Union
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from weakref import WeakKeyDictionary
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import attr
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import py
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from iniconfig import IniConfig
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from iniconfig import SectionWrapper
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from _pytest import timing
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from _pytest._code import Source
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from _pytest.capture import _get_multicapture
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from _pytest.compat import final
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from _pytest.config import _PluggyPlugin
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from _pytest.config import Config
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from _pytest.config import ExitCode
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from _pytest.config import hookimpl
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from _pytest.config import main
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from _pytest.config import PytestPluginManager
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from _pytest.config.argparsing import Parser
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from _pytest.deprecated import check_ispytest
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from _pytest.fixtures import fixture
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from _pytest.fixtures import FixtureRequest
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from _pytest.main import Session
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from _pytest.monkeypatch import MonkeyPatch
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from _pytest.nodes import Collector
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from _pytest.nodes import Item
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from _pytest.outcomes import fail
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from _pytest.outcomes import importorskip
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from _pytest.outcomes import skip
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from _pytest.pathlib import make_numbered_dir
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from _pytest.reports import CollectReport
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from _pytest.reports import TestReport
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from _pytest.tmpdir import TempPathFactory
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from _pytest.warning_types import PytestWarning
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if TYPE_CHECKING:
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from typing_extensions import Literal
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import pexpect
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pytest_plugins = ["pytester_assertions"]
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IGNORE_PAM = [ # filenames added when obtaining details about the current user
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"/var/lib/sss/mc/passwd"
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]
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def pytest_addoption(parser: Parser) -> None:
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parser.addoption(
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"--lsof",
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action="store_true",
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dest="lsof",
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default=False,
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help="run FD checks if lsof is available",
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)
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parser.addoption(
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"--runpytest",
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default="inprocess",
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dest="runpytest",
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choices=("inprocess", "subprocess"),
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help=(
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"run pytest sub runs in tests using an 'inprocess' "
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"or 'subprocess' (python -m main) method"
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),
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)
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parser.addini(
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"pytester_example_dir", help="directory to take the pytester example files from"
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)
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def pytest_configure(config: Config) -> None:
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if config.getvalue("lsof"):
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checker = LsofFdLeakChecker()
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if checker.matching_platform():
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config.pluginmanager.register(checker)
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config.addinivalue_line(
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"markers",
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"pytester_example_path(*path_segments): join the given path "
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"segments to `pytester_example_dir` for this test.",
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)
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class LsofFdLeakChecker:
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def get_open_files(self) -> List[Tuple[str, str]]:
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out = subprocess.run(
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("lsof", "-Ffn0", "-p", str(os.getpid())),
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stdout=subprocess.PIPE,
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stderr=subprocess.DEVNULL,
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check=True,
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universal_newlines=True,
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).stdout
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def isopen(line: str) -> bool:
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return line.startswith("f") and (
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"deleted" not in line
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and "mem" not in line
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and "txt" not in line
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and "cwd" not in line
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)
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open_files = []
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for line in out.split("\n"):
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if isopen(line):
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fields = line.split("\0")
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fd = fields[0][1:]
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filename = fields[1][1:]
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if filename in IGNORE_PAM:
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continue
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if filename.startswith("/"):
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open_files.append((fd, filename))
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return open_files
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def matching_platform(self) -> bool:
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try:
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subprocess.run(("lsof", "-v"), check=True)
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except (OSError, subprocess.CalledProcessError):
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return False
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else:
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return True
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@hookimpl(hookwrapper=True, tryfirst=True)
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def pytest_runtest_protocol(self, item: Item) -> Generator[None, None, None]:
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lines1 = self.get_open_files()
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yield
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if hasattr(sys, "pypy_version_info"):
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gc.collect()
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lines2 = self.get_open_files()
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new_fds = {t[0] for t in lines2} - {t[0] for t in lines1}
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leaked_files = [t for t in lines2 if t[0] in new_fds]
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if leaked_files:
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error = [
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"***** %s FD leakage detected" % len(leaked_files),
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*(str(f) for f in leaked_files),
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"*** Before:",
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*(str(f) for f in lines1),
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"*** After:",
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*(str(f) for f in lines2),
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"***** %s FD leakage detected" % len(leaked_files),
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"*** function %s:%s: %s " % item.location,
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"See issue #2366",
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]
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item.warn(PytestWarning("\n".join(error)))
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# used at least by pytest-xdist plugin
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@fixture
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def _pytest(request: FixtureRequest) -> "PytestArg":
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"""Return a helper which offers a gethookrecorder(hook) method which
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returns a HookRecorder instance which helps to make assertions about called
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hooks."""
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return PytestArg(request)
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class PytestArg:
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def __init__(self, request: FixtureRequest) -> None:
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self._request = request
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def gethookrecorder(self, hook) -> "HookRecorder":
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hookrecorder = HookRecorder(hook._pm)
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self._request.addfinalizer(hookrecorder.finish_recording)
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return hookrecorder
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def get_public_names(values: Iterable[str]) -> List[str]:
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"""Only return names from iterator values without a leading underscore."""
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return [x for x in values if x[0] != "_"]
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class ParsedCall:
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def __init__(self, name: str, kwargs) -> None:
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self.__dict__.update(kwargs)
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self._name = name
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def __repr__(self) -> str:
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d = self.__dict__.copy()
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del d["_name"]
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return f"<ParsedCall {self._name!r}(**{d!r})>"
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if TYPE_CHECKING:
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# The class has undetermined attributes, this tells mypy about it.
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def __getattr__(self, key: str):
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...
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class HookRecorder:
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"""Record all hooks called in a plugin manager.
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This wraps all the hook calls in the plugin manager, recording each call
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before propagating the normal calls.
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"""
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def __init__(self, pluginmanager: PytestPluginManager) -> None:
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self._pluginmanager = pluginmanager
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self.calls: List[ParsedCall] = []
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self.ret: Optional[Union[int, ExitCode]] = None
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def before(hook_name: str, hook_impls, kwargs) -> None:
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self.calls.append(ParsedCall(hook_name, kwargs))
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def after(outcome, hook_name: str, hook_impls, kwargs) -> None:
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pass
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self._undo_wrapping = pluginmanager.add_hookcall_monitoring(before, after)
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def finish_recording(self) -> None:
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self._undo_wrapping()
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def getcalls(self, names: Union[str, Iterable[str]]) -> List[ParsedCall]:
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if isinstance(names, str):
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names = names.split()
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return [call for call in self.calls if call._name in names]
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def assert_contains(self, entries: Sequence[Tuple[str, str]]) -> None:
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__tracebackhide__ = True
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i = 0
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entries = list(entries)
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backlocals = sys._getframe(1).f_locals
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while entries:
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name, check = entries.pop(0)
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for ind, call in enumerate(self.calls[i:]):
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if call._name == name:
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print("NAMEMATCH", name, call)
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if eval(check, backlocals, call.__dict__):
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print("CHECKERMATCH", repr(check), "->", call)
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else:
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print("NOCHECKERMATCH", repr(check), "-", call)
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continue
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i += ind + 1
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break
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print("NONAMEMATCH", name, "with", call)
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else:
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fail(f"could not find {name!r} check {check!r}")
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def popcall(self, name: str) -> ParsedCall:
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__tracebackhide__ = True
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for i, call in enumerate(self.calls):
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if call._name == name:
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del self.calls[i]
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return call
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lines = [f"could not find call {name!r}, in:"]
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lines.extend([" %s" % x for x in self.calls])
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fail("\n".join(lines))
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def getcall(self, name: str) -> ParsedCall:
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values = self.getcalls(name)
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assert len(values) == 1, (name, values)
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return values[0]
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# functionality for test reports
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@overload
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def getreports(
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self, names: "Literal['pytest_collectreport']",
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) -> Sequence[CollectReport]:
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...
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@overload
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def getreports(
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self, names: "Literal['pytest_runtest_logreport']",
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) -> Sequence[TestReport]:
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...
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@overload
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def getreports(
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self,
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names: Union[str, Iterable[str]] = (
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"pytest_collectreport",
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"pytest_runtest_logreport",
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),
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) -> Sequence[Union[CollectReport, TestReport]]:
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...
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def getreports(
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self,
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names: Union[str, Iterable[str]] = (
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"pytest_collectreport",
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"pytest_runtest_logreport",
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),
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) -> Sequence[Union[CollectReport, TestReport]]:
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return [x.report for x in self.getcalls(names)]
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def matchreport(
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self,
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inamepart: str = "",
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names: Union[str, Iterable[str]] = (
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"pytest_runtest_logreport",
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"pytest_collectreport",
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),
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when: Optional[str] = None,
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) -> Union[CollectReport, TestReport]:
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"""Return a testreport whose dotted import path matches."""
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values = []
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for rep in self.getreports(names=names):
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if not when and rep.when != "call" and rep.passed:
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# setup/teardown passing reports - let's ignore those
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continue
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if when and rep.when != when:
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continue
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if not inamepart or inamepart in rep.nodeid.split("::"):
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values.append(rep)
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if not values:
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raise ValueError(
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"could not find test report matching %r: "
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"no test reports at all!" % (inamepart,)
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)
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if len(values) > 1:
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raise ValueError(
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"found 2 or more testreports matching {!r}: {}".format(
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inamepart, values
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)
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)
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return values[0]
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@overload
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def getfailures(
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self, names: "Literal['pytest_collectreport']",
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) -> Sequence[CollectReport]:
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...
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@overload
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def getfailures(
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self, names: "Literal['pytest_runtest_logreport']",
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) -> Sequence[TestReport]:
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...
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@overload
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def getfailures(
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self,
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names: Union[str, Iterable[str]] = (
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"pytest_collectreport",
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"pytest_runtest_logreport",
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),
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) -> Sequence[Union[CollectReport, TestReport]]:
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...
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def getfailures(
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self,
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names: Union[str, Iterable[str]] = (
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"pytest_collectreport",
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"pytest_runtest_logreport",
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),
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) -> Sequence[Union[CollectReport, TestReport]]:
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return [rep for rep in self.getreports(names) if rep.failed]
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def getfailedcollections(self) -> Sequence[CollectReport]:
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return self.getfailures("pytest_collectreport")
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def listoutcomes(
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self,
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) -> Tuple[
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Sequence[TestReport],
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Sequence[Union[CollectReport, TestReport]],
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Sequence[Union[CollectReport, TestReport]],
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]:
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passed = []
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skipped = []
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failed = []
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for rep in self.getreports(
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("pytest_collectreport", "pytest_runtest_logreport")
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):
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if rep.passed:
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if rep.when == "call":
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assert isinstance(rep, TestReport)
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passed.append(rep)
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elif rep.skipped:
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skipped.append(rep)
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else:
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assert rep.failed, f"Unexpected outcome: {rep!r}"
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failed.append(rep)
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return passed, skipped, failed
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def countoutcomes(self) -> List[int]:
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return [len(x) for x in self.listoutcomes()]
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def assertoutcome(self, passed: int = 0, skipped: int = 0, failed: int = 0) -> None:
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__tracebackhide__ = True
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from _pytest.pytester_assertions import assertoutcome
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outcomes = self.listoutcomes()
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assertoutcome(
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outcomes, passed=passed, skipped=skipped, failed=failed,
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)
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def clear(self) -> None:
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self.calls[:] = []
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@fixture
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def linecomp() -> "LineComp":
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"""A :class: `LineComp` instance for checking that an input linearly
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contains a sequence of strings."""
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return LineComp()
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@fixture(name="LineMatcher")
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def LineMatcher_fixture(request: FixtureRequest) -> Type["LineMatcher"]:
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"""A reference to the :class: `LineMatcher`.
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This is instantiable with a list of lines (without their trailing newlines).
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This is useful for testing large texts, such as the output of commands.
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"""
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return LineMatcher
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|
|
|
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@fixture
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def pytester(request: FixtureRequest, tmp_path_factory: TempPathFactory) -> "Pytester":
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"""
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Facilities to write tests/configuration files, execute pytest in isolation, and match
|
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against expected output, perfect for black-box testing of pytest plugins.
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It attempts to isolate the test run from external factors as much as possible, modifying
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the current working directory to ``path`` and environment variables during initialization.
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|
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It is particularly useful for testing plugins. It is similar to the :fixture:`tmp_path`
|
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fixture but provides methods which aid in testing pytest itself.
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"""
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return Pytester(request, tmp_path_factory, _ispytest=True)
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|
|
|
|
@fixture
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def testdir(pytester: "Pytester") -> "Testdir":
|
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"""
|
|
Identical to :fixture:`pytester`, and provides an instance whose methods return
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legacy ``py.path.local`` objects instead when applicable.
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New code should avoid using :fixture:`testdir` in favor of :fixture:`pytester`.
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"""
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return Testdir(pytester, _ispytest=True)
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|
|
|
|
@fixture
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|
def _sys_snapshot() -> Generator[None, None, None]:
|
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snappaths = SysPathsSnapshot()
|
|
snapmods = SysModulesSnapshot()
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|
yield
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snapmods.restore()
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snappaths.restore()
|
|
|
|
|
|
@fixture
|
|
def _config_for_test() -> Generator[Config, None, None]:
|
|
from _pytest.config import get_config
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|
|
|
config = get_config()
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yield config
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config._ensure_unconfigure() # cleanup, e.g. capman closing tmpfiles.
|
|
|
|
|
|
# Regex to match the session duration string in the summary: "74.34s".
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rex_session_duration = re.compile(r"\d+\.\d\ds")
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# Regex to match all the counts and phrases in the summary line: "34 passed, 111 skipped".
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|
rex_outcome = re.compile(r"(\d+) (\w+)")
|
|
|
|
|
|
class RunResult:
|
|
"""The result of running a command."""
|
|
|
|
def __init__(
|
|
self,
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|
ret: Union[int, ExitCode],
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|
outlines: List[str],
|
|
errlines: List[str],
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|
duration: float,
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|
) -> None:
|
|
try:
|
|
self.ret: Union[int, ExitCode] = ExitCode(ret)
|
|
"""The return value."""
|
|
except ValueError:
|
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self.ret = ret
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self.outlines = outlines
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|
"""List of lines captured from stdout."""
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self.errlines = errlines
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|
"""List of lines captured from stderr."""
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self.stdout = LineMatcher(outlines)
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|
""":class:`LineMatcher` of stdout.
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|
|
|
Use e.g. :func:`str(stdout) <LineMatcher.__str__()>` to reconstruct stdout, or the commonly used
|
|
:func:`stdout.fnmatch_lines() <LineMatcher.fnmatch_lines()>` method.
|
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"""
|
|
self.stderr = LineMatcher(errlines)
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|
""":class:`LineMatcher` of stderr."""
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|
self.duration = duration
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|
"""Duration in seconds."""
|
|
|
|
def __repr__(self) -> str:
|
|
return (
|
|
"<RunResult ret=%s len(stdout.lines)=%d len(stderr.lines)=%d duration=%.2fs>"
|
|
% (self.ret, len(self.stdout.lines), len(self.stderr.lines), self.duration)
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|
)
|
|
|
|
def parseoutcomes(self) -> Dict[str, int]:
|
|
"""Return a dictionary of outcome noun -> count from parsing the terminal
|
|
output that the test process produced.
|
|
|
|
The returned nouns will always be in plural form::
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|
|
======= 1 failed, 1 passed, 1 warning, 1 error in 0.13s ====
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|
|
Will return ``{"failed": 1, "passed": 1, "warnings": 1, "errors": 1}``.
|
|
"""
|
|
return self.parse_summary_nouns(self.outlines)
|
|
|
|
@classmethod
|
|
def parse_summary_nouns(cls, lines) -> Dict[str, int]:
|
|
"""Extract the nouns from a pytest terminal summary line.
|
|
|
|
It always returns the plural noun for consistency::
|
|
|
|
======= 1 failed, 1 passed, 1 warning, 1 error in 0.13s ====
|
|
|
|
Will return ``{"failed": 1, "passed": 1, "warnings": 1, "errors": 1}``.
|
|
"""
|
|
for line in reversed(lines):
|
|
if rex_session_duration.search(line):
|
|
outcomes = rex_outcome.findall(line)
|
|
ret = {noun: int(count) for (count, noun) in outcomes}
|
|
break
|
|
else:
|
|
raise ValueError("Pytest terminal summary report not found")
|
|
|
|
to_plural = {
|
|
"warning": "warnings",
|
|
"error": "errors",
|
|
}
|
|
return {to_plural.get(k, k): v for k, v in ret.items()}
|
|
|
|
def assert_outcomes(
|
|
self,
|
|
passed: int = 0,
|
|
skipped: int = 0,
|
|
failed: int = 0,
|
|
errors: int = 0,
|
|
xpassed: int = 0,
|
|
xfailed: int = 0,
|
|
) -> None:
|
|
"""Assert that the specified outcomes appear with the respective
|
|
numbers (0 means it didn't occur) in the text output from a test run."""
|
|
__tracebackhide__ = True
|
|
from _pytest.pytester_assertions import assert_outcomes
|
|
|
|
outcomes = self.parseoutcomes()
|
|
assert_outcomes(
|
|
outcomes,
|
|
passed=passed,
|
|
skipped=skipped,
|
|
failed=failed,
|
|
errors=errors,
|
|
xpassed=xpassed,
|
|
xfailed=xfailed,
|
|
)
|
|
|
|
|
|
class CwdSnapshot:
|
|
def __init__(self) -> None:
|
|
self.__saved = os.getcwd()
|
|
|
|
def restore(self) -> None:
|
|
os.chdir(self.__saved)
|
|
|
|
|
|
class SysModulesSnapshot:
|
|
def __init__(self, preserve: Optional[Callable[[str], bool]] = None) -> None:
|
|
self.__preserve = preserve
|
|
self.__saved = dict(sys.modules)
|
|
|
|
def restore(self) -> None:
|
|
if self.__preserve:
|
|
self.__saved.update(
|
|
(k, m) for k, m in sys.modules.items() if self.__preserve(k)
|
|
)
|
|
sys.modules.clear()
|
|
sys.modules.update(self.__saved)
|
|
|
|
|
|
class SysPathsSnapshot:
|
|
def __init__(self) -> None:
|
|
self.__saved = list(sys.path), list(sys.meta_path)
|
|
|
|
def restore(self) -> None:
|
|
sys.path[:], sys.meta_path[:] = self.__saved
|
|
|
|
|
|
@final
|
|
class Pytester:
|
|
"""
|
|
Facilities to write tests/configuration files, execute pytest in isolation, and match
|
|
against expected output, perfect for black-box testing of pytest plugins.
|
|
|
|
It attempts to isolate the test run from external factors as much as possible, modifying
|
|
the current working directory to ``path`` and environment variables during initialization.
|
|
|
|
Attributes:
|
|
|
|
:ivar Path path: temporary directory path used to create files/run tests from, etc.
|
|
|
|
:ivar plugins:
|
|
A list of plugins to use with :py:meth:`parseconfig` and
|
|
:py:meth:`runpytest`. Initially this is an empty list but plugins can
|
|
be added to the list. The type of items to add to the list depends on
|
|
the method using them so refer to them for details.
|
|
"""
|
|
|
|
__test__ = False
|
|
|
|
CLOSE_STDIN = object
|
|
|
|
class TimeoutExpired(Exception):
|
|
pass
|
|
|
|
def __init__(
|
|
self,
|
|
request: FixtureRequest,
|
|
tmp_path_factory: TempPathFactory,
|
|
*,
|
|
_ispytest: bool = False,
|
|
) -> None:
|
|
check_ispytest(_ispytest)
|
|
self._request = request
|
|
self._mod_collections: WeakKeyDictionary[
|
|
Collector, List[Union[Item, Collector]]
|
|
] = (WeakKeyDictionary())
|
|
if request.function:
|
|
name: str = request.function.__name__
|
|
else:
|
|
name = request.node.name
|
|
self._name = name
|
|
self._path: Path = tmp_path_factory.mktemp(name, numbered=True)
|
|
self.plugins: List[Union[str, _PluggyPlugin]] = []
|
|
self._cwd_snapshot = CwdSnapshot()
|
|
self._sys_path_snapshot = SysPathsSnapshot()
|
|
self._sys_modules_snapshot = self.__take_sys_modules_snapshot()
|
|
self.chdir()
|
|
self._request.addfinalizer(self._finalize)
|
|
self._method = self._request.config.getoption("--runpytest")
|
|
self._test_tmproot = tmp_path_factory.mktemp(f"tmp-{name}", numbered=True)
|
|
|
|
self._monkeypatch = mp = MonkeyPatch()
|
|
mp.setenv("PYTEST_DEBUG_TEMPROOT", str(self._test_tmproot))
|
|
# Ensure no unexpected caching via tox.
|
|
mp.delenv("TOX_ENV_DIR", raising=False)
|
|
# Discard outer pytest options.
|
|
mp.delenv("PYTEST_ADDOPTS", raising=False)
|
|
# Ensure no user config is used.
|
|
tmphome = str(self.path)
|
|
mp.setenv("HOME", tmphome)
|
|
mp.setenv("USERPROFILE", tmphome)
|
|
# Do not use colors for inner runs by default.
|
|
mp.setenv("PY_COLORS", "0")
|
|
|
|
@property
|
|
def path(self) -> Path:
|
|
"""Temporary directory where files are created and pytest is executed."""
|
|
return self._path
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<Pytester {self.path!r}>"
|
|
|
|
def _finalize(self) -> None:
|
|
"""
|
|
Clean up global state artifacts.
|
|
|
|
Some methods modify the global interpreter state and this tries to
|
|
clean this up. It does not remove the temporary directory however so
|
|
it can be looked at after the test run has finished.
|
|
"""
|
|
self._sys_modules_snapshot.restore()
|
|
self._sys_path_snapshot.restore()
|
|
self._cwd_snapshot.restore()
|
|
self._monkeypatch.undo()
|
|
|
|
def __take_sys_modules_snapshot(self) -> SysModulesSnapshot:
|
|
# Some zope modules used by twisted-related tests keep internal state
|
|
# and can't be deleted; we had some trouble in the past with
|
|
# `zope.interface` for example.
|
|
#
|
|
# Preserve readline due to https://bugs.python.org/issue41033.
|
|
# pexpect issues a SIGWINCH.
|
|
def preserve_module(name):
|
|
return name.startswith(("zope", "readline"))
|
|
|
|
return SysModulesSnapshot(preserve=preserve_module)
|
|
|
|
def make_hook_recorder(self, pluginmanager: PytestPluginManager) -> HookRecorder:
|
|
"""Create a new :py:class:`HookRecorder` for a PluginManager."""
|
|
pluginmanager.reprec = reprec = HookRecorder(pluginmanager)
|
|
self._request.addfinalizer(reprec.finish_recording)
|
|
return reprec
|
|
|
|
def chdir(self) -> None:
|
|
"""Cd into the temporary directory.
|
|
|
|
This is done automatically upon instantiation.
|
|
"""
|
|
os.chdir(self.path)
|
|
|
|
def _makefile(
|
|
self,
|
|
ext: str,
|
|
lines: Sequence[Union[Any, bytes]],
|
|
files: Dict[str, str],
|
|
encoding: str = "utf-8",
|
|
) -> Path:
|
|
items = list(files.items())
|
|
|
|
def to_text(s: Union[Any, bytes]) -> str:
|
|
return s.decode(encoding) if isinstance(s, bytes) else str(s)
|
|
|
|
if lines:
|
|
source = "\n".join(to_text(x) for x in lines)
|
|
basename = self._name
|
|
items.insert(0, (basename, source))
|
|
|
|
ret = None
|
|
for basename, value in items:
|
|
p = self.path.joinpath(basename).with_suffix(ext)
|
|
p.parent.mkdir(parents=True, exist_ok=True)
|
|
source_ = Source(value)
|
|
source = "\n".join(to_text(line) for line in source_.lines)
|
|
p.write_text(source.strip(), encoding=encoding)
|
|
if ret is None:
|
|
ret = p
|
|
assert ret is not None
|
|
return ret
|
|
|
|
def makefile(self, ext: str, *args: str, **kwargs: str) -> Path:
|
|
r"""Create new file(s) in the test directory.
|
|
|
|
:param str ext:
|
|
The extension the file(s) should use, including the dot, e.g. `.py`.
|
|
:param args:
|
|
All args are treated as strings and joined using newlines.
|
|
The result is written as contents to the file. The name of the
|
|
file is based on the test function requesting this fixture.
|
|
:param kwargs:
|
|
Each keyword is the name of a file, while the value of it will
|
|
be written as contents of the file.
|
|
|
|
Examples:
|
|
|
|
.. code-block:: python
|
|
|
|
pytester.makefile(".txt", "line1", "line2")
|
|
|
|
pytester.makefile(".ini", pytest="[pytest]\naddopts=-rs\n")
|
|
|
|
"""
|
|
return self._makefile(ext, args, kwargs)
|
|
|
|
def makeconftest(self, source: str) -> Path:
|
|
"""Write a contest.py file with 'source' as contents."""
|
|
return self.makepyfile(conftest=source)
|
|
|
|
def makeini(self, source: str) -> Path:
|
|
"""Write a tox.ini file with 'source' as contents."""
|
|
return self.makefile(".ini", tox=source)
|
|
|
|
def getinicfg(self, source: str) -> SectionWrapper:
|
|
"""Return the pytest section from the tox.ini config file."""
|
|
p = self.makeini(source)
|
|
return IniConfig(str(p))["pytest"]
|
|
|
|
def makepyprojecttoml(self, source: str) -> Path:
|
|
"""Write a pyproject.toml file with 'source' as contents.
|
|
|
|
.. versionadded:: 6.0
|
|
"""
|
|
return self.makefile(".toml", pyproject=source)
|
|
|
|
def makepyfile(self, *args, **kwargs) -> Path:
|
|
r"""Shortcut for .makefile() with a .py extension.
|
|
|
|
Defaults to the test name with a '.py' extension, e.g test_foobar.py, overwriting
|
|
existing files.
|
|
|
|
Examples:
|
|
|
|
.. code-block:: python
|
|
|
|
def test_something(pytester):
|
|
# Initial file is created test_something.py.
|
|
pytester.makepyfile("foobar")
|
|
# To create multiple files, pass kwargs accordingly.
|
|
pytester.makepyfile(custom="foobar")
|
|
# At this point, both 'test_something.py' & 'custom.py' exist in the test directory.
|
|
|
|
"""
|
|
return self._makefile(".py", args, kwargs)
|
|
|
|
def maketxtfile(self, *args, **kwargs) -> Path:
|
|
r"""Shortcut for .makefile() with a .txt extension.
|
|
|
|
Defaults to the test name with a '.txt' extension, e.g test_foobar.txt, overwriting
|
|
existing files.
|
|
|
|
Examples:
|
|
|
|
.. code-block:: python
|
|
|
|
def test_something(pytester):
|
|
# Initial file is created test_something.txt.
|
|
pytester.maketxtfile("foobar")
|
|
# To create multiple files, pass kwargs accordingly.
|
|
pytester.maketxtfile(custom="foobar")
|
|
# At this point, both 'test_something.txt' & 'custom.txt' exist in the test directory.
|
|
|
|
"""
|
|
return self._makefile(".txt", args, kwargs)
|
|
|
|
def syspathinsert(
|
|
self, path: Optional[Union[str, "os.PathLike[str]"]] = None
|
|
) -> None:
|
|
"""Prepend a directory to sys.path, defaults to :py:attr:`tmpdir`.
|
|
|
|
This is undone automatically when this object dies at the end of each
|
|
test.
|
|
"""
|
|
if path is None:
|
|
path = self.path
|
|
|
|
self._monkeypatch.syspath_prepend(str(path))
|
|
|
|
def mkdir(self, name: str) -> Path:
|
|
"""Create a new (sub)directory."""
|
|
p = self.path / name
|
|
p.mkdir()
|
|
return p
|
|
|
|
def mkpydir(self, name: str) -> Path:
|
|
"""Create a new python package.
|
|
|
|
This creates a (sub)directory with an empty ``__init__.py`` file so it
|
|
gets recognised as a Python package.
|
|
"""
|
|
p = self.path / name
|
|
p.mkdir()
|
|
p.joinpath("__init__.py").touch()
|
|
return p
|
|
|
|
def copy_example(self, name: Optional[str] = None) -> Path:
|
|
"""Copy file from project's directory into the testdir.
|
|
|
|
:param str name: The name of the file to copy.
|
|
:return: path to the copied directory (inside ``self.path``).
|
|
|
|
"""
|
|
example_dir = self._request.config.getini("pytester_example_dir")
|
|
if example_dir is None:
|
|
raise ValueError("pytester_example_dir is unset, can't copy examples")
|
|
example_dir = Path(str(self._request.config.rootdir)) / example_dir
|
|
|
|
for extra_element in self._request.node.iter_markers("pytester_example_path"):
|
|
assert extra_element.args
|
|
example_dir = example_dir.joinpath(*extra_element.args)
|
|
|
|
if name is None:
|
|
func_name = self._name
|
|
maybe_dir = example_dir / func_name
|
|
maybe_file = example_dir / (func_name + ".py")
|
|
|
|
if maybe_dir.is_dir():
|
|
example_path = maybe_dir
|
|
elif maybe_file.is_file():
|
|
example_path = maybe_file
|
|
else:
|
|
raise LookupError(
|
|
f"{func_name} can't be found as module or package in {example_dir}"
|
|
)
|
|
else:
|
|
example_path = example_dir.joinpath(name)
|
|
|
|
if example_path.is_dir() and not example_path.joinpath("__init__.py").is_file():
|
|
# TODO: py.path.local.copy can copy files to existing directories,
|
|
# while with shutil.copytree the destination directory cannot exist,
|
|
# we will need to roll our own in order to drop py.path.local completely
|
|
py.path.local(example_path).copy(py.path.local(self.path))
|
|
return self.path
|
|
elif example_path.is_file():
|
|
result = self.path.joinpath(example_path.name)
|
|
shutil.copy(example_path, result)
|
|
return result
|
|
else:
|
|
raise LookupError(
|
|
f'example "{example_path}" is not found as a file or directory'
|
|
)
|
|
|
|
Session = Session
|
|
|
|
def getnode(
|
|
self, config: Config, arg: Union[str, "os.PathLike[str]"]
|
|
) -> Optional[Union[Collector, Item]]:
|
|
"""Return the collection node of a file.
|
|
|
|
:param _pytest.config.Config config:
|
|
A pytest config.
|
|
See :py:meth:`parseconfig` and :py:meth:`parseconfigure` for creating it.
|
|
:param py.path.local arg:
|
|
Path to the file.
|
|
"""
|
|
session = Session.from_config(config)
|
|
assert "::" not in str(arg)
|
|
p = py.path.local(arg)
|
|
config.hook.pytest_sessionstart(session=session)
|
|
res = session.perform_collect([str(p)], genitems=False)[0]
|
|
config.hook.pytest_sessionfinish(session=session, exitstatus=ExitCode.OK)
|
|
return res
|
|
|
|
def getpathnode(self, path: Union[str, "os.PathLike[str]"]):
|
|
"""Return the collection node of a file.
|
|
|
|
This is like :py:meth:`getnode` but uses :py:meth:`parseconfigure` to
|
|
create the (configured) pytest Config instance.
|
|
|
|
:param py.path.local path: Path to the file.
|
|
"""
|
|
path = py.path.local(path)
|
|
config = self.parseconfigure(path)
|
|
session = Session.from_config(config)
|
|
x = session.fspath.bestrelpath(path)
|
|
config.hook.pytest_sessionstart(session=session)
|
|
res = session.perform_collect([x], genitems=False)[0]
|
|
config.hook.pytest_sessionfinish(session=session, exitstatus=ExitCode.OK)
|
|
return res
|
|
|
|
def genitems(self, colitems: Sequence[Union[Item, Collector]]) -> List[Item]:
|
|
"""Generate all test items from a collection node.
|
|
|
|
This recurses into the collection node and returns a list of all the
|
|
test items contained within.
|
|
"""
|
|
session = colitems[0].session
|
|
result: List[Item] = []
|
|
for colitem in colitems:
|
|
result.extend(session.genitems(colitem))
|
|
return result
|
|
|
|
def runitem(self, source: str) -> Any:
|
|
"""Run the "test_func" Item.
|
|
|
|
The calling test instance (class containing the test method) must
|
|
provide a ``.getrunner()`` method which should return a runner which
|
|
can run the test protocol for a single item, e.g.
|
|
:py:func:`_pytest.runner.runtestprotocol`.
|
|
"""
|
|
# used from runner functional tests
|
|
item = self.getitem(source)
|
|
# the test class where we are called from wants to provide the runner
|
|
testclassinstance = self._request.instance
|
|
runner = testclassinstance.getrunner()
|
|
return runner(item)
|
|
|
|
def inline_runsource(self, source: str, *cmdlineargs) -> HookRecorder:
|
|
"""Run a test module in process using ``pytest.main()``.
|
|
|
|
This run writes "source" into a temporary file and runs
|
|
``pytest.main()`` on it, returning a :py:class:`HookRecorder` instance
|
|
for the result.
|
|
|
|
:param source: The source code of the test module.
|
|
|
|
:param cmdlineargs: Any extra command line arguments to use.
|
|
|
|
:returns: :py:class:`HookRecorder` instance of the result.
|
|
"""
|
|
p = self.makepyfile(source)
|
|
values = list(cmdlineargs) + [p]
|
|
return self.inline_run(*values)
|
|
|
|
def inline_genitems(self, *args) -> Tuple[List[Item], HookRecorder]:
|
|
"""Run ``pytest.main(['--collectonly'])`` in-process.
|
|
|
|
Runs the :py:func:`pytest.main` function to run all of pytest inside
|
|
the test process itself like :py:meth:`inline_run`, but returns a
|
|
tuple of the collected items and a :py:class:`HookRecorder` instance.
|
|
"""
|
|
rec = self.inline_run("--collect-only", *args)
|
|
items = [x.item for x in rec.getcalls("pytest_itemcollected")]
|
|
return items, rec
|
|
|
|
def inline_run(
|
|
self,
|
|
*args: Union[str, "os.PathLike[str]"],
|
|
plugins=(),
|
|
no_reraise_ctrlc: bool = False,
|
|
) -> HookRecorder:
|
|
"""Run ``pytest.main()`` in-process, returning a HookRecorder.
|
|
|
|
Runs the :py:func:`pytest.main` function to run all of pytest inside
|
|
the test process itself. This means it can return a
|
|
:py:class:`HookRecorder` instance which gives more detailed results
|
|
from that run than can be done by matching stdout/stderr from
|
|
:py:meth:`runpytest`.
|
|
|
|
:param args:
|
|
Command line arguments to pass to :py:func:`pytest.main`.
|
|
:param plugins:
|
|
Extra plugin instances the ``pytest.main()`` instance should use.
|
|
:param no_reraise_ctrlc:
|
|
Typically we reraise keyboard interrupts from the child run. If
|
|
True, the KeyboardInterrupt exception is captured.
|
|
|
|
:returns: A :py:class:`HookRecorder` instance.
|
|
"""
|
|
# (maybe a cpython bug?) the importlib cache sometimes isn't updated
|
|
# properly between file creation and inline_run (especially if imports
|
|
# are interspersed with file creation)
|
|
importlib.invalidate_caches()
|
|
|
|
plugins = list(plugins)
|
|
finalizers = []
|
|
try:
|
|
# Any sys.module or sys.path changes done while running pytest
|
|
# inline should be reverted after the test run completes to avoid
|
|
# clashing with later inline tests run within the same pytest test,
|
|
# e.g. just because they use matching test module names.
|
|
finalizers.append(self.__take_sys_modules_snapshot().restore)
|
|
finalizers.append(SysPathsSnapshot().restore)
|
|
|
|
# Important note:
|
|
# - our tests should not leave any other references/registrations
|
|
# laying around other than possibly loaded test modules
|
|
# referenced from sys.modules, as nothing will clean those up
|
|
# automatically
|
|
|
|
rec = []
|
|
|
|
class Collect:
|
|
def pytest_configure(x, config: Config) -> None:
|
|
rec.append(self.make_hook_recorder(config.pluginmanager))
|
|
|
|
plugins.append(Collect())
|
|
ret = main([str(x) for x in args], plugins=plugins)
|
|
if len(rec) == 1:
|
|
reprec = rec.pop()
|
|
else:
|
|
|
|
class reprec: # type: ignore
|
|
pass
|
|
|
|
reprec.ret = ret # type: ignore
|
|
|
|
# Typically we reraise keyboard interrupts from the child run
|
|
# because it's our user requesting interruption of the testing.
|
|
if ret == ExitCode.INTERRUPTED and not no_reraise_ctrlc:
|
|
calls = reprec.getcalls("pytest_keyboard_interrupt")
|
|
if calls and calls[-1].excinfo.type == KeyboardInterrupt:
|
|
raise KeyboardInterrupt()
|
|
return reprec
|
|
finally:
|
|
for finalizer in finalizers:
|
|
finalizer()
|
|
|
|
def runpytest_inprocess(
|
|
self, *args: Union[str, "os.PathLike[str]"], **kwargs: Any
|
|
) -> RunResult:
|
|
"""Return result of running pytest in-process, providing a similar
|
|
interface to what self.runpytest() provides."""
|
|
syspathinsert = kwargs.pop("syspathinsert", False)
|
|
|
|
if syspathinsert:
|
|
self.syspathinsert()
|
|
now = timing.time()
|
|
capture = _get_multicapture("sys")
|
|
capture.start_capturing()
|
|
try:
|
|
try:
|
|
reprec = self.inline_run(*args, **kwargs)
|
|
except SystemExit as e:
|
|
ret = e.args[0]
|
|
try:
|
|
ret = ExitCode(e.args[0])
|
|
except ValueError:
|
|
pass
|
|
|
|
class reprec: # type: ignore
|
|
ret = ret
|
|
|
|
except Exception:
|
|
traceback.print_exc()
|
|
|
|
class reprec: # type: ignore
|
|
ret = ExitCode(3)
|
|
|
|
finally:
|
|
out, err = capture.readouterr()
|
|
capture.stop_capturing()
|
|
sys.stdout.write(out)
|
|
sys.stderr.write(err)
|
|
|
|
assert reprec.ret is not None
|
|
res = RunResult(
|
|
reprec.ret, out.splitlines(), err.splitlines(), timing.time() - now
|
|
)
|
|
res.reprec = reprec # type: ignore
|
|
return res
|
|
|
|
def runpytest(
|
|
self, *args: Union[str, "os.PathLike[str]"], **kwargs: Any
|
|
) -> RunResult:
|
|
"""Run pytest inline or in a subprocess, depending on the command line
|
|
option "--runpytest" and return a :py:class:`RunResult`."""
|
|
new_args = self._ensure_basetemp(args)
|
|
if self._method == "inprocess":
|
|
return self.runpytest_inprocess(*new_args, **kwargs)
|
|
elif self._method == "subprocess":
|
|
return self.runpytest_subprocess(*new_args, **kwargs)
|
|
raise RuntimeError(f"Unrecognized runpytest option: {self._method}")
|
|
|
|
def _ensure_basetemp(
|
|
self, args: Sequence[Union[str, "os.PathLike[str]"]]
|
|
) -> List[Union[str, "os.PathLike[str]"]]:
|
|
new_args = list(args)
|
|
for x in new_args:
|
|
if str(x).startswith("--basetemp"):
|
|
break
|
|
else:
|
|
new_args.append("--basetemp=%s" % self.path.parent.joinpath("basetemp"))
|
|
return new_args
|
|
|
|
def parseconfig(self, *args: Union[str, "os.PathLike[str]"]) -> Config:
|
|
"""Return a new pytest Config instance from given commandline args.
|
|
|
|
This invokes the pytest bootstrapping code in _pytest.config to create
|
|
a new :py:class:`_pytest.core.PluginManager` and call the
|
|
pytest_cmdline_parse hook to create a new
|
|
:py:class:`_pytest.config.Config` instance.
|
|
|
|
If :py:attr:`plugins` has been populated they should be plugin modules
|
|
to be registered with the PluginManager.
|
|
"""
|
|
import _pytest.config
|
|
|
|
new_args = self._ensure_basetemp(args)
|
|
new_args = [str(x) for x in new_args]
|
|
|
|
config = _pytest.config._prepareconfig(new_args, self.plugins) # type: ignore[arg-type]
|
|
# we don't know what the test will do with this half-setup config
|
|
# object and thus we make sure it gets unconfigured properly in any
|
|
# case (otherwise capturing could still be active, for example)
|
|
self._request.addfinalizer(config._ensure_unconfigure)
|
|
return config
|
|
|
|
def parseconfigure(self, *args: Union[str, "os.PathLike[str]"]) -> Config:
|
|
"""Return a new pytest configured Config instance.
|
|
|
|
Returns a new :py:class:`_pytest.config.Config` instance like
|
|
:py:meth:`parseconfig`, but also calls the pytest_configure hook.
|
|
"""
|
|
config = self.parseconfig(*args)
|
|
config._do_configure()
|
|
return config
|
|
|
|
def getitem(self, source: str, funcname: str = "test_func") -> Item:
|
|
"""Return the test item for a test function.
|
|
|
|
Writes the source to a python file and runs pytest's collection on
|
|
the resulting module, returning the test item for the requested
|
|
function name.
|
|
|
|
:param source:
|
|
The module source.
|
|
:param funcname:
|
|
The name of the test function for which to return a test item.
|
|
"""
|
|
items = self.getitems(source)
|
|
for item in items:
|
|
if item.name == funcname:
|
|
return item
|
|
assert 0, "{!r} item not found in module:\n{}\nitems: {}".format(
|
|
funcname, source, items
|
|
)
|
|
|
|
def getitems(self, source: str) -> List[Item]:
|
|
"""Return all test items collected from the module.
|
|
|
|
Writes the source to a Python file and runs pytest's collection on
|
|
the resulting module, returning all test items contained within.
|
|
"""
|
|
modcol = self.getmodulecol(source)
|
|
return self.genitems([modcol])
|
|
|
|
def getmodulecol(
|
|
self, source: Union[str, Path], configargs=(), *, withinit: bool = False
|
|
):
|
|
"""Return the module collection node for ``source``.
|
|
|
|
Writes ``source`` to a file using :py:meth:`makepyfile` and then
|
|
runs the pytest collection on it, returning the collection node for the
|
|
test module.
|
|
|
|
:param source:
|
|
The source code of the module to collect.
|
|
|
|
:param configargs:
|
|
Any extra arguments to pass to :py:meth:`parseconfigure`.
|
|
|
|
:param withinit:
|
|
Whether to also write an ``__init__.py`` file to the same
|
|
directory to ensure it is a package.
|
|
"""
|
|
if isinstance(source, Path):
|
|
path = self.path.joinpath(source)
|
|
assert not withinit, "not supported for paths"
|
|
else:
|
|
kw = {self._name: str(source)}
|
|
path = self.makepyfile(**kw)
|
|
if withinit:
|
|
self.makepyfile(__init__="#")
|
|
self.config = config = self.parseconfigure(path, *configargs)
|
|
return self.getnode(config, path)
|
|
|
|
def collect_by_name(
|
|
self, modcol: Collector, name: str
|
|
) -> Optional[Union[Item, Collector]]:
|
|
"""Return the collection node for name from the module collection.
|
|
|
|
Searchs a module collection node for a collection node matching the
|
|
given name.
|
|
|
|
:param modcol: A module collection node; see :py:meth:`getmodulecol`.
|
|
:param name: The name of the node to return.
|
|
"""
|
|
if modcol not in self._mod_collections:
|
|
self._mod_collections[modcol] = list(modcol.collect())
|
|
for colitem in self._mod_collections[modcol]:
|
|
if colitem.name == name:
|
|
return colitem
|
|
return None
|
|
|
|
def popen(
|
|
self,
|
|
cmdargs,
|
|
stdout: Union[int, TextIO] = subprocess.PIPE,
|
|
stderr: Union[int, TextIO] = subprocess.PIPE,
|
|
stdin=CLOSE_STDIN,
|
|
**kw,
|
|
):
|
|
"""Invoke subprocess.Popen.
|
|
|
|
Calls subprocess.Popen making sure the current working directory is
|
|
in the PYTHONPATH.
|
|
|
|
You probably want to use :py:meth:`run` instead.
|
|
"""
|
|
env = os.environ.copy()
|
|
env["PYTHONPATH"] = os.pathsep.join(
|
|
filter(None, [os.getcwd(), env.get("PYTHONPATH", "")])
|
|
)
|
|
kw["env"] = env
|
|
|
|
if stdin is self.CLOSE_STDIN:
|
|
kw["stdin"] = subprocess.PIPE
|
|
elif isinstance(stdin, bytes):
|
|
kw["stdin"] = subprocess.PIPE
|
|
else:
|
|
kw["stdin"] = stdin
|
|
|
|
popen = subprocess.Popen(cmdargs, stdout=stdout, stderr=stderr, **kw)
|
|
if stdin is self.CLOSE_STDIN:
|
|
assert popen.stdin is not None
|
|
popen.stdin.close()
|
|
elif isinstance(stdin, bytes):
|
|
assert popen.stdin is not None
|
|
popen.stdin.write(stdin)
|
|
|
|
return popen
|
|
|
|
def run(
|
|
self,
|
|
*cmdargs: Union[str, "os.PathLike[str]"],
|
|
timeout: Optional[float] = None,
|
|
stdin=CLOSE_STDIN,
|
|
) -> RunResult:
|
|
"""Run a command with arguments.
|
|
|
|
Run a process using subprocess.Popen saving the stdout and stderr.
|
|
|
|
:param cmdargs:
|
|
The sequence of arguments to pass to `subprocess.Popen()`, with path-like objects
|
|
being converted to ``str`` automatically.
|
|
:param timeout:
|
|
The period in seconds after which to timeout and raise
|
|
:py:class:`Pytester.TimeoutExpired`.
|
|
:param stdin:
|
|
Optional standard input. Bytes are being send, closing
|
|
the pipe, otherwise it is passed through to ``popen``.
|
|
Defaults to ``CLOSE_STDIN``, which translates to using a pipe
|
|
(``subprocess.PIPE``) that gets closed.
|
|
|
|
:rtype: RunResult
|
|
"""
|
|
__tracebackhide__ = True
|
|
|
|
# TODO: Remove type ignore in next mypy release.
|
|
# https://github.com/python/typeshed/pull/4582
|
|
cmdargs = tuple(
|
|
os.fspath(arg) if isinstance(arg, os.PathLike) else arg for arg in cmdargs # type: ignore[misc]
|
|
)
|
|
p1 = self.path.joinpath("stdout")
|
|
p2 = self.path.joinpath("stderr")
|
|
print("running:", *cmdargs)
|
|
print(" in:", Path.cwd())
|
|
|
|
with p1.open("w", encoding="utf8") as f1, p2.open("w", encoding="utf8") as f2:
|
|
now = timing.time()
|
|
popen = self.popen(
|
|
cmdargs,
|
|
stdin=stdin,
|
|
stdout=f1,
|
|
stderr=f2,
|
|
close_fds=(sys.platform != "win32"),
|
|
)
|
|
if popen.stdin is not None:
|
|
popen.stdin.close()
|
|
|
|
def handle_timeout() -> None:
|
|
__tracebackhide__ = True
|
|
|
|
timeout_message = (
|
|
"{seconds} second timeout expired running:"
|
|
" {command}".format(seconds=timeout, command=cmdargs)
|
|
)
|
|
|
|
popen.kill()
|
|
popen.wait()
|
|
raise self.TimeoutExpired(timeout_message)
|
|
|
|
if timeout is None:
|
|
ret = popen.wait()
|
|
else:
|
|
try:
|
|
ret = popen.wait(timeout)
|
|
except subprocess.TimeoutExpired:
|
|
handle_timeout()
|
|
|
|
with p1.open(encoding="utf8") as f1, p2.open(encoding="utf8") as f2:
|
|
out = f1.read().splitlines()
|
|
err = f2.read().splitlines()
|
|
|
|
self._dump_lines(out, sys.stdout)
|
|
self._dump_lines(err, sys.stderr)
|
|
|
|
with contextlib.suppress(ValueError):
|
|
ret = ExitCode(ret)
|
|
return RunResult(ret, out, err, timing.time() - now)
|
|
|
|
def _dump_lines(self, lines, fp):
|
|
try:
|
|
for line in lines:
|
|
print(line, file=fp)
|
|
except UnicodeEncodeError:
|
|
print(f"couldn't print to {fp} because of encoding")
|
|
|
|
def _getpytestargs(self) -> Tuple[str, ...]:
|
|
return sys.executable, "-mpytest"
|
|
|
|
def runpython(self, script) -> RunResult:
|
|
"""Run a python script using sys.executable as interpreter.
|
|
|
|
:rtype: RunResult
|
|
"""
|
|
return self.run(sys.executable, script)
|
|
|
|
def runpython_c(self, command):
|
|
"""Run python -c "command".
|
|
|
|
:rtype: RunResult
|
|
"""
|
|
return self.run(sys.executable, "-c", command)
|
|
|
|
def runpytest_subprocess(self, *args, timeout: Optional[float] = None) -> RunResult:
|
|
"""Run pytest as a subprocess with given arguments.
|
|
|
|
Any plugins added to the :py:attr:`plugins` list will be added using the
|
|
``-p`` command line option. Additionally ``--basetemp`` is used to put
|
|
any temporary files and directories in a numbered directory prefixed
|
|
with "runpytest-" to not conflict with the normal numbered pytest
|
|
location for temporary files and directories.
|
|
|
|
:param args:
|
|
The sequence of arguments to pass to the pytest subprocess.
|
|
:param timeout:
|
|
The period in seconds after which to timeout and raise
|
|
:py:class:`Pytester.TimeoutExpired`.
|
|
|
|
:rtype: RunResult
|
|
"""
|
|
__tracebackhide__ = True
|
|
p = make_numbered_dir(root=self.path, prefix="runpytest-", mode=0o700)
|
|
args = ("--basetemp=%s" % p,) + args
|
|
plugins = [x for x in self.plugins if isinstance(x, str)]
|
|
if plugins:
|
|
args = ("-p", plugins[0]) + args
|
|
args = self._getpytestargs() + args
|
|
return self.run(*args, timeout=timeout)
|
|
|
|
def spawn_pytest(
|
|
self, string: str, expect_timeout: float = 10.0
|
|
) -> "pexpect.spawn":
|
|
"""Run pytest using pexpect.
|
|
|
|
This makes sure to use the right pytest and sets up the temporary
|
|
directory locations.
|
|
|
|
The pexpect child is returned.
|
|
"""
|
|
basetemp = self.path / "temp-pexpect"
|
|
basetemp.mkdir(mode=0o700)
|
|
invoke = " ".join(map(str, self._getpytestargs()))
|
|
cmd = f"{invoke} --basetemp={basetemp} {string}"
|
|
return self.spawn(cmd, expect_timeout=expect_timeout)
|
|
|
|
def spawn(self, cmd: str, expect_timeout: float = 10.0) -> "pexpect.spawn":
|
|
"""Run a command using pexpect.
|
|
|
|
The pexpect child is returned.
|
|
"""
|
|
pexpect = importorskip("pexpect", "3.0")
|
|
if hasattr(sys, "pypy_version_info") and "64" in platform.machine():
|
|
skip("pypy-64 bit not supported")
|
|
if not hasattr(pexpect, "spawn"):
|
|
skip("pexpect.spawn not available")
|
|
logfile = self.path.joinpath("spawn.out").open("wb")
|
|
|
|
child = pexpect.spawn(cmd, logfile=logfile, timeout=expect_timeout)
|
|
self._request.addfinalizer(logfile.close)
|
|
return child
|
|
|
|
|
|
class LineComp:
|
|
def __init__(self) -> None:
|
|
self.stringio = StringIO()
|
|
""":class:`python:io.StringIO()` instance used for input."""
|
|
|
|
def assert_contains_lines(self, lines2: Sequence[str]) -> None:
|
|
"""Assert that ``lines2`` are contained (linearly) in :attr:`stringio`'s value.
|
|
|
|
Lines are matched using :func:`LineMatcher.fnmatch_lines`.
|
|
"""
|
|
__tracebackhide__ = True
|
|
val = self.stringio.getvalue()
|
|
self.stringio.truncate(0)
|
|
self.stringio.seek(0)
|
|
lines1 = val.split("\n")
|
|
LineMatcher(lines1).fnmatch_lines(lines2)
|
|
|
|
|
|
@final
|
|
@attr.s(repr=False, str=False, init=False)
|
|
class Testdir:
|
|
"""
|
|
Similar to :class:`Pytester`, but this class works with legacy py.path.local objects instead.
|
|
|
|
All methods just forward to an internal :class:`Pytester` instance, converting results
|
|
to `py.path.local` objects as necessary.
|
|
"""
|
|
|
|
__test__ = False
|
|
|
|
CLOSE_STDIN = Pytester.CLOSE_STDIN
|
|
TimeoutExpired = Pytester.TimeoutExpired
|
|
Session = Pytester.Session
|
|
|
|
def __init__(self, pytester: Pytester, *, _ispytest: bool = False) -> None:
|
|
check_ispytest(_ispytest)
|
|
self._pytester = pytester
|
|
|
|
@property
|
|
def tmpdir(self) -> py.path.local:
|
|
"""Temporary directory where tests are executed."""
|
|
return py.path.local(self._pytester.path)
|
|
|
|
@property
|
|
def test_tmproot(self) -> py.path.local:
|
|
return py.path.local(self._pytester._test_tmproot)
|
|
|
|
@property
|
|
def request(self):
|
|
return self._pytester._request
|
|
|
|
@property
|
|
def plugins(self):
|
|
return self._pytester.plugins
|
|
|
|
@plugins.setter
|
|
def plugins(self, plugins):
|
|
self._pytester.plugins = plugins
|
|
|
|
@property
|
|
def monkeypatch(self) -> MonkeyPatch:
|
|
return self._pytester._monkeypatch
|
|
|
|
def make_hook_recorder(self, pluginmanager) -> HookRecorder:
|
|
"""See :meth:`Pytester.make_hook_recorder`."""
|
|
return self._pytester.make_hook_recorder(pluginmanager)
|
|
|
|
def chdir(self) -> None:
|
|
"""See :meth:`Pytester.chdir`."""
|
|
return self._pytester.chdir()
|
|
|
|
def finalize(self) -> None:
|
|
"""See :meth:`Pytester._finalize`."""
|
|
return self._pytester._finalize()
|
|
|
|
def makefile(self, ext, *args, **kwargs) -> py.path.local:
|
|
"""See :meth:`Pytester.makefile`."""
|
|
return py.path.local(str(self._pytester.makefile(ext, *args, **kwargs)))
|
|
|
|
def makeconftest(self, source) -> py.path.local:
|
|
"""See :meth:`Pytester.makeconftest`."""
|
|
return py.path.local(str(self._pytester.makeconftest(source)))
|
|
|
|
def makeini(self, source) -> py.path.local:
|
|
"""See :meth:`Pytester.makeini`."""
|
|
return py.path.local(str(self._pytester.makeini(source)))
|
|
|
|
def getinicfg(self, source: str) -> SectionWrapper:
|
|
"""See :meth:`Pytester.getinicfg`."""
|
|
return self._pytester.getinicfg(source)
|
|
|
|
def makepyprojecttoml(self, source) -> py.path.local:
|
|
"""See :meth:`Pytester.makepyprojecttoml`."""
|
|
return py.path.local(str(self._pytester.makepyprojecttoml(source)))
|
|
|
|
def makepyfile(self, *args, **kwargs) -> py.path.local:
|
|
"""See :meth:`Pytester.makepyfile`."""
|
|
return py.path.local(str(self._pytester.makepyfile(*args, **kwargs)))
|
|
|
|
def maketxtfile(self, *args, **kwargs) -> py.path.local:
|
|
"""See :meth:`Pytester.maketxtfile`."""
|
|
return py.path.local(str(self._pytester.maketxtfile(*args, **kwargs)))
|
|
|
|
def syspathinsert(self, path=None) -> None:
|
|
"""See :meth:`Pytester.syspathinsert`."""
|
|
return self._pytester.syspathinsert(path)
|
|
|
|
def mkdir(self, name) -> py.path.local:
|
|
"""See :meth:`Pytester.mkdir`."""
|
|
return py.path.local(str(self._pytester.mkdir(name)))
|
|
|
|
def mkpydir(self, name) -> py.path.local:
|
|
"""See :meth:`Pytester.mkpydir`."""
|
|
return py.path.local(str(self._pytester.mkpydir(name)))
|
|
|
|
def copy_example(self, name=None) -> py.path.local:
|
|
"""See :meth:`Pytester.copy_example`."""
|
|
return py.path.local(str(self._pytester.copy_example(name)))
|
|
|
|
def getnode(self, config: Config, arg) -> Optional[Union[Item, Collector]]:
|
|
"""See :meth:`Pytester.getnode`."""
|
|
return self._pytester.getnode(config, arg)
|
|
|
|
def getpathnode(self, path):
|
|
"""See :meth:`Pytester.getpathnode`."""
|
|
return self._pytester.getpathnode(path)
|
|
|
|
def genitems(self, colitems: List[Union[Item, Collector]]) -> List[Item]:
|
|
"""See :meth:`Pytester.genitems`."""
|
|
return self._pytester.genitems(colitems)
|
|
|
|
def runitem(self, source):
|
|
"""See :meth:`Pytester.runitem`."""
|
|
return self._pytester.runitem(source)
|
|
|
|
def inline_runsource(self, source, *cmdlineargs):
|
|
"""See :meth:`Pytester.inline_runsource`."""
|
|
return self._pytester.inline_runsource(source, *cmdlineargs)
|
|
|
|
def inline_genitems(self, *args):
|
|
"""See :meth:`Pytester.inline_genitems`."""
|
|
return self._pytester.inline_genitems(*args)
|
|
|
|
def inline_run(self, *args, plugins=(), no_reraise_ctrlc: bool = False):
|
|
"""See :meth:`Pytester.inline_run`."""
|
|
return self._pytester.inline_run(
|
|
*args, plugins=plugins, no_reraise_ctrlc=no_reraise_ctrlc
|
|
)
|
|
|
|
def runpytest_inprocess(self, *args, **kwargs) -> RunResult:
|
|
"""See :meth:`Pytester.runpytest_inprocess`."""
|
|
return self._pytester.runpytest_inprocess(*args, **kwargs)
|
|
|
|
def runpytest(self, *args, **kwargs) -> RunResult:
|
|
"""See :meth:`Pytester.runpytest`."""
|
|
return self._pytester.runpytest(*args, **kwargs)
|
|
|
|
def parseconfig(self, *args) -> Config:
|
|
"""See :meth:`Pytester.parseconfig`."""
|
|
return self._pytester.parseconfig(*args)
|
|
|
|
def parseconfigure(self, *args) -> Config:
|
|
"""See :meth:`Pytester.parseconfigure`."""
|
|
return self._pytester.parseconfigure(*args)
|
|
|
|
def getitem(self, source, funcname="test_func"):
|
|
"""See :meth:`Pytester.getitem`."""
|
|
return self._pytester.getitem(source, funcname)
|
|
|
|
def getitems(self, source):
|
|
"""See :meth:`Pytester.getitems`."""
|
|
return self._pytester.getitems(source)
|
|
|
|
def getmodulecol(self, source, configargs=(), withinit=False):
|
|
"""See :meth:`Pytester.getmodulecol`."""
|
|
return self._pytester.getmodulecol(
|
|
source, configargs=configargs, withinit=withinit
|
|
)
|
|
|
|
def collect_by_name(
|
|
self, modcol: Collector, name: str
|
|
) -> Optional[Union[Item, Collector]]:
|
|
"""See :meth:`Pytester.collect_by_name`."""
|
|
return self._pytester.collect_by_name(modcol, name)
|
|
|
|
def popen(
|
|
self,
|
|
cmdargs,
|
|
stdout: Union[int, TextIO] = subprocess.PIPE,
|
|
stderr: Union[int, TextIO] = subprocess.PIPE,
|
|
stdin=CLOSE_STDIN,
|
|
**kw,
|
|
):
|
|
"""See :meth:`Pytester.popen`."""
|
|
return self._pytester.popen(cmdargs, stdout, stderr, stdin, **kw)
|
|
|
|
def run(self, *cmdargs, timeout=None, stdin=CLOSE_STDIN) -> RunResult:
|
|
"""See :meth:`Pytester.run`."""
|
|
return self._pytester.run(*cmdargs, timeout=timeout, stdin=stdin)
|
|
|
|
def runpython(self, script) -> RunResult:
|
|
"""See :meth:`Pytester.runpython`."""
|
|
return self._pytester.runpython(script)
|
|
|
|
def runpython_c(self, command):
|
|
"""See :meth:`Pytester.runpython_c`."""
|
|
return self._pytester.runpython_c(command)
|
|
|
|
def runpytest_subprocess(self, *args, timeout=None) -> RunResult:
|
|
"""See :meth:`Pytester.runpytest_subprocess`."""
|
|
return self._pytester.runpytest_subprocess(*args, timeout=timeout)
|
|
|
|
def spawn_pytest(
|
|
self, string: str, expect_timeout: float = 10.0
|
|
) -> "pexpect.spawn":
|
|
"""See :meth:`Pytester.spawn_pytest`."""
|
|
return self._pytester.spawn_pytest(string, expect_timeout=expect_timeout)
|
|
|
|
def spawn(self, cmd: str, expect_timeout: float = 10.0) -> "pexpect.spawn":
|
|
"""See :meth:`Pytester.spawn`."""
|
|
return self._pytester.spawn(cmd, expect_timeout=expect_timeout)
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<Testdir {self.tmpdir!r}>"
|
|
|
|
def __str__(self) -> str:
|
|
return str(self.tmpdir)
|
|
|
|
|
|
class LineMatcher:
|
|
"""Flexible matching of text.
|
|
|
|
This is a convenience class to test large texts like the output of
|
|
commands.
|
|
|
|
The constructor takes a list of lines without their trailing newlines, i.e.
|
|
``text.splitlines()``.
|
|
"""
|
|
|
|
def __init__(self, lines: List[str]) -> None:
|
|
self.lines = lines
|
|
self._log_output: List[str] = []
|
|
|
|
def __str__(self) -> str:
|
|
"""Return the entire original text.
|
|
|
|
.. versionadded:: 6.2
|
|
You can use :meth:`str` in older versions.
|
|
"""
|
|
return "\n".join(self.lines)
|
|
|
|
def _getlines(self, lines2: Union[str, Sequence[str], Source]) -> Sequence[str]:
|
|
if isinstance(lines2, str):
|
|
lines2 = Source(lines2)
|
|
if isinstance(lines2, Source):
|
|
lines2 = lines2.strip().lines
|
|
return lines2
|
|
|
|
def fnmatch_lines_random(self, lines2: Sequence[str]) -> None:
|
|
"""Check lines exist in the output in any order (using :func:`python:fnmatch.fnmatch`)."""
|
|
__tracebackhide__ = True
|
|
self._match_lines_random(lines2, fnmatch)
|
|
|
|
def re_match_lines_random(self, lines2: Sequence[str]) -> None:
|
|
"""Check lines exist in the output in any order (using :func:`python:re.match`)."""
|
|
__tracebackhide__ = True
|
|
self._match_lines_random(lines2, lambda name, pat: bool(re.match(pat, name)))
|
|
|
|
def _match_lines_random(
|
|
self, lines2: Sequence[str], match_func: Callable[[str, str], bool]
|
|
) -> None:
|
|
__tracebackhide__ = True
|
|
lines2 = self._getlines(lines2)
|
|
for line in lines2:
|
|
for x in self.lines:
|
|
if line == x or match_func(x, line):
|
|
self._log("matched: ", repr(line))
|
|
break
|
|
else:
|
|
msg = "line %r not found in output" % line
|
|
self._log(msg)
|
|
self._fail(msg)
|
|
|
|
def get_lines_after(self, fnline: str) -> Sequence[str]:
|
|
"""Return all lines following the given line in the text.
|
|
|
|
The given line can contain glob wildcards.
|
|
"""
|
|
for i, line in enumerate(self.lines):
|
|
if fnline == line or fnmatch(line, fnline):
|
|
return self.lines[i + 1 :]
|
|
raise ValueError("line %r not found in output" % fnline)
|
|
|
|
def _log(self, *args) -> None:
|
|
self._log_output.append(" ".join(str(x) for x in args))
|
|
|
|
@property
|
|
def _log_text(self) -> str:
|
|
return "\n".join(self._log_output)
|
|
|
|
def fnmatch_lines(
|
|
self, lines2: Sequence[str], *, consecutive: bool = False
|
|
) -> None:
|
|
"""Check lines exist in the output (using :func:`python:fnmatch.fnmatch`).
|
|
|
|
The argument is a list of lines which have to match and can use glob
|
|
wildcards. If they do not match a pytest.fail() is called. The
|
|
matches and non-matches are also shown as part of the error message.
|
|
|
|
:param lines2: String patterns to match.
|
|
:param consecutive: Match lines consecutively?
|
|
"""
|
|
__tracebackhide__ = True
|
|
self._match_lines(lines2, fnmatch, "fnmatch", consecutive=consecutive)
|
|
|
|
def re_match_lines(
|
|
self, lines2: Sequence[str], *, consecutive: bool = False
|
|
) -> None:
|
|
"""Check lines exist in the output (using :func:`python:re.match`).
|
|
|
|
The argument is a list of lines which have to match using ``re.match``.
|
|
If they do not match a pytest.fail() is called.
|
|
|
|
The matches and non-matches are also shown as part of the error message.
|
|
|
|
:param lines2: string patterns to match.
|
|
:param consecutive: match lines consecutively?
|
|
"""
|
|
__tracebackhide__ = True
|
|
self._match_lines(
|
|
lines2,
|
|
lambda name, pat: bool(re.match(pat, name)),
|
|
"re.match",
|
|
consecutive=consecutive,
|
|
)
|
|
|
|
def _match_lines(
|
|
self,
|
|
lines2: Sequence[str],
|
|
match_func: Callable[[str, str], bool],
|
|
match_nickname: str,
|
|
*,
|
|
consecutive: bool = False,
|
|
) -> None:
|
|
"""Underlying implementation of ``fnmatch_lines`` and ``re_match_lines``.
|
|
|
|
:param Sequence[str] lines2:
|
|
List of string patterns to match. The actual format depends on
|
|
``match_func``.
|
|
:param match_func:
|
|
A callable ``match_func(line, pattern)`` where line is the
|
|
captured line from stdout/stderr and pattern is the matching
|
|
pattern.
|
|
:param str match_nickname:
|
|
The nickname for the match function that will be logged to stdout
|
|
when a match occurs.
|
|
:param consecutive:
|
|
Match lines consecutively?
|
|
"""
|
|
if not isinstance(lines2, collections.abc.Sequence):
|
|
raise TypeError("invalid type for lines2: {}".format(type(lines2).__name__))
|
|
lines2 = self._getlines(lines2)
|
|
lines1 = self.lines[:]
|
|
extralines = []
|
|
__tracebackhide__ = True
|
|
wnick = len(match_nickname) + 1
|
|
started = False
|
|
for line in lines2:
|
|
nomatchprinted = False
|
|
while lines1:
|
|
nextline = lines1.pop(0)
|
|
if line == nextline:
|
|
self._log("exact match:", repr(line))
|
|
started = True
|
|
break
|
|
elif match_func(nextline, line):
|
|
self._log("%s:" % match_nickname, repr(line))
|
|
self._log(
|
|
"{:>{width}}".format("with:", width=wnick), repr(nextline)
|
|
)
|
|
started = True
|
|
break
|
|
else:
|
|
if consecutive and started:
|
|
msg = f"no consecutive match: {line!r}"
|
|
self._log(msg)
|
|
self._log(
|
|
"{:>{width}}".format("with:", width=wnick), repr(nextline)
|
|
)
|
|
self._fail(msg)
|
|
if not nomatchprinted:
|
|
self._log(
|
|
"{:>{width}}".format("nomatch:", width=wnick), repr(line)
|
|
)
|
|
nomatchprinted = True
|
|
self._log("{:>{width}}".format("and:", width=wnick), repr(nextline))
|
|
extralines.append(nextline)
|
|
else:
|
|
msg = f"remains unmatched: {line!r}"
|
|
self._log(msg)
|
|
self._fail(msg)
|
|
self._log_output = []
|
|
|
|
def no_fnmatch_line(self, pat: str) -> None:
|
|
"""Ensure captured lines do not match the given pattern, using ``fnmatch.fnmatch``.
|
|
|
|
:param str pat: The pattern to match lines.
|
|
"""
|
|
__tracebackhide__ = True
|
|
self._no_match_line(pat, fnmatch, "fnmatch")
|
|
|
|
def no_re_match_line(self, pat: str) -> None:
|
|
"""Ensure captured lines do not match the given pattern, using ``re.match``.
|
|
|
|
:param str pat: The regular expression to match lines.
|
|
"""
|
|
__tracebackhide__ = True
|
|
self._no_match_line(
|
|
pat, lambda name, pat: bool(re.match(pat, name)), "re.match"
|
|
)
|
|
|
|
def _no_match_line(
|
|
self, pat: str, match_func: Callable[[str, str], bool], match_nickname: str
|
|
) -> None:
|
|
"""Ensure captured lines does not have a the given pattern, using ``fnmatch.fnmatch``.
|
|
|
|
:param str pat: The pattern to match lines.
|
|
"""
|
|
__tracebackhide__ = True
|
|
nomatch_printed = False
|
|
wnick = len(match_nickname) + 1
|
|
for line in self.lines:
|
|
if match_func(line, pat):
|
|
msg = f"{match_nickname}: {pat!r}"
|
|
self._log(msg)
|
|
self._log("{:>{width}}".format("with:", width=wnick), repr(line))
|
|
self._fail(msg)
|
|
else:
|
|
if not nomatch_printed:
|
|
self._log("{:>{width}}".format("nomatch:", width=wnick), repr(pat))
|
|
nomatch_printed = True
|
|
self._log("{:>{width}}".format("and:", width=wnick), repr(line))
|
|
self._log_output = []
|
|
|
|
def _fail(self, msg: str) -> None:
|
|
__tracebackhide__ = True
|
|
log_text = self._log_text
|
|
self._log_output = []
|
|
fail(log_text)
|
|
|
|
def str(self) -> str:
|
|
"""Return the entire original text."""
|
|
return str(self)
|