niceSOFT/python3-pytest: The pytest framework makes it easy to write small tests, yet scales to support complex functional testing

src/_pytest/legacypath.py
480 строк16 KB
Bruno Oliveira
Revert "Remove deprecated py.path (`fspath`) node constructor arguments"
08 мар 2024, 01:50
08 мар 2024, 01:50303cd0d
# mypy: allow-untyped-defs
"""Add backward compatibility support for the legacy py path type."""

import dataclasses
from pathlib import Path
import shlex
import subprocess
from typing import Final
from typing import final
from typing import List
from typing import Optional
from typing import TYPE_CHECKING
from typing import Union

from iniconfig import SectionWrapper

from _pytest.cacheprovider import Cache
from _pytest.compat import LEGACY_PATH
from _pytest.compat import legacy_path
from _pytest.config import Config
from _pytest.config import hookimpl
from _pytest.config import PytestPluginManager
from _pytest.deprecated import check_ispytest
from _pytest.fixtures import fixture
from _pytest.fixtures import FixtureRequest
from _pytest.main import Session
from _pytest.monkeypatch import MonkeyPatch
from _pytest.nodes import Collector
from _pytest.nodes import Item
from _pytest.nodes import Node
from _pytest.pytester import HookRecorder
from _pytest.pytester import Pytester
from _pytest.pytester import RunResult
from _pytest.terminal import TerminalReporter
from _pytest.tmpdir import TempPathFactory


if TYPE_CHECKING:
    import pexpect


@final
class Testdir:
    """
    Similar to :class:`Pytester`, but this class works with legacy legacy_path objects instead.

    All methods just forward to an internal :class:`Pytester` instance, converting results
    to `legacy_path` objects as necessary.
    """

    __test__ = False

    CLOSE_STDIN: "Final" = Pytester.CLOSE_STDIN
    TimeoutExpired: "Final" = Pytester.TimeoutExpired

    def __init__(self, pytester: Pytester, *, _ispytest: bool = False) -> None:
        check_ispytest(_ispytest)
        self._pytester = pytester

    @property
    def tmpdir(self) -> LEGACY_PATH:
        """Temporary directory where tests are executed."""
        return legacy_path(self._pytester.path)

    @property
    def test_tmproot(self) -> LEGACY_PATH:
        return legacy_path(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:
        return self._pytester._finalize()

    def makefile(self, ext, *args, **kwargs) -> LEGACY_PATH:
        """See :meth:`Pytester.makefile`."""
        if ext and not ext.startswith("."):
            # pytester.makefile is going to throw a ValueError in a way that
            # testdir.makefile did not, because
            # pathlib.Path is stricter suffixes than py.path
            # This ext arguments is likely user error, but since testdir has
            # allowed this, we will prepend "." as a workaround to avoid breaking
            # testdir usage that worked before
            ext = "." + ext
        return legacy_path(self._pytester.makefile(ext, *args, **kwargs))

    def makeconftest(self, source) -> LEGACY_PATH:
        """See :meth:`Pytester.makeconftest`."""
        return legacy_path(self._pytester.makeconftest(source))

    def makeini(self, source) -> LEGACY_PATH:
        """See :meth:`Pytester.makeini`."""
        return legacy_path(self._pytester.makeini(source))

    def getinicfg(self, source: str) -> SectionWrapper:
        """See :meth:`Pytester.getinicfg`."""
        return self._pytester.getinicfg(source)

    def makepyprojecttoml(self, source) -> LEGACY_PATH:
        """See :meth:`Pytester.makepyprojecttoml`."""
        return legacy_path(self._pytester.makepyprojecttoml(source))

    def makepyfile(self, *args, **kwargs) -> LEGACY_PATH:
        """See :meth:`Pytester.makepyfile`."""
        return legacy_path(self._pytester.makepyfile(*args, **kwargs))

    def maketxtfile(self, *args, **kwargs) -> LEGACY_PATH:
        """See :meth:`Pytester.maketxtfile`."""
        return legacy_path(self._pytester.maketxtfile(*args, **kwargs))

    def syspathinsert(self, path=None) -> None:
        """See :meth:`Pytester.syspathinsert`."""
        return self._pytester.syspathinsert(path)

    def mkdir(self, name) -> LEGACY_PATH:
        """See :meth:`Pytester.mkdir`."""
        return legacy_path(self._pytester.mkdir(name))

    def mkpydir(self, name) -> LEGACY_PATH:
        """See :meth:`Pytester.mkpydir`."""
        return legacy_path(self._pytester.mkpydir(name))

    def copy_example(self, name=None) -> LEGACY_PATH:
        """See :meth:`Pytester.copy_example`."""
        return legacy_path(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=subprocess.PIPE,
        stderr=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 LegacyTestdirPlugin:
    @staticmethod
    @fixture
    def testdir(pytester: Pytester) -> Testdir:
        """
        Identical to :fixture:`pytester`, and provides an instance whose methods return
        legacy ``LEGACY_PATH`` objects instead when applicable.

        New code should avoid using :fixture:`testdir` in favor of :fixture:`pytester`.
        """
        return Testdir(pytester, _ispytest=True)


@final
@dataclasses.dataclass
class TempdirFactory:
    """Backward compatibility wrapper that implements ``py.path.local``
    for :class:`TempPathFactory`.

    .. note::
        These days, it is preferred to use ``tmp_path_factory``.

        :ref:`About the tmpdir and tmpdir_factory fixtures<tmpdir and tmpdir_factory>`.

    """

    _tmppath_factory: TempPathFactory

    def __init__(
        self, tmppath_factory: TempPathFactory, *, _ispytest: bool = False
    ) -> None:
        check_ispytest(_ispytest)
        self._tmppath_factory = tmppath_factory

    def mktemp(self, basename: str, numbered: bool = True) -> LEGACY_PATH:
        """Same as :meth:`TempPathFactory.mktemp`, but returns a ``py.path.local`` object."""
        return legacy_path(self._tmppath_factory.mktemp(basename, numbered).resolve())

    def getbasetemp(self) -> LEGACY_PATH:
        """Same as :meth:`TempPathFactory.getbasetemp`, but returns a ``py.path.local`` object."""
        return legacy_path(self._tmppath_factory.getbasetemp().resolve())


class LegacyTmpdirPlugin:
    @staticmethod
    @fixture(scope="session")
    def tmpdir_factory(request: FixtureRequest) -> TempdirFactory:
        """Return a :class:`pytest.TempdirFactory` instance for the test session."""
        # Set dynamically by pytest_configure().
        return request.config._tmpdirhandler  # type: ignore

    @staticmethod
    @fixture
    def tmpdir(tmp_path: Path) -> LEGACY_PATH:
        """Return a temporary directory path object which is unique to each test
        function invocation, created as a sub directory of the base temporary
        directory.

        By default, a new base temporary directory is created each test session,
        and old bases are removed after 3 sessions, to aid in debugging. If
        ``--basetemp`` is used then it is cleared each session. See
        :ref:`temporary directory location and retention`.

        The returned object is a `legacy_path`_ object.

        .. note::
            These days, it is preferred to use ``tmp_path``.

            :ref:`About the tmpdir and tmpdir_factory fixtures<tmpdir and tmpdir_factory>`.

        .. _legacy_path: https://py.readthedocs.io/en/latest/path.html
        """
        return legacy_path(tmp_path)


def Cache_makedir(self: Cache, name: str) -> LEGACY_PATH:
    """Return a directory path object with the given name.

    Same as :func:`mkdir`, but returns a legacy py path instance.
    """
    return legacy_path(self.mkdir(name))


def FixtureRequest_fspath(self: FixtureRequest) -> LEGACY_PATH:
    """(deprecated) The file system path of the test module which collected this test."""
    return legacy_path(self.path)


def TerminalReporter_startdir(self: TerminalReporter) -> LEGACY_PATH:
    """The directory from which pytest was invoked.

    Prefer to use ``startpath`` which is a :class:`pathlib.Path`.

    :type: LEGACY_PATH
    """
    return legacy_path(self.startpath)


def Config_invocation_dir(self: Config) -> LEGACY_PATH:
    """The directory from which pytest was invoked.

    Prefer to use :attr:`invocation_params.dir <InvocationParams.dir>`,
    which is a :class:`pathlib.Path`.

    :type: LEGACY_PATH
    """
    return legacy_path(str(self.invocation_params.dir))


def Config_rootdir(self: Config) -> LEGACY_PATH:
    """The path to the :ref:`rootdir <rootdir>`.

    Prefer to use :attr:`rootpath`, which is a :class:`pathlib.Path`.

    :type: LEGACY_PATH
    """
    return legacy_path(str(self.rootpath))


def Config_inifile(self: Config) -> Optional[LEGACY_PATH]:
    """The path to the :ref:`configfile <configfiles>`.

    Prefer to use :attr:`inipath`, which is a :class:`pathlib.Path`.

    :type: Optional[LEGACY_PATH]
    """
    return legacy_path(str(self.inipath)) if self.inipath else None


def Session_stardir(self: Session) -> LEGACY_PATH:
    """The path from which pytest was invoked.

    Prefer to use ``startpath`` which is a :class:`pathlib.Path`.

    :type: LEGACY_PATH
    """
    return legacy_path(self.startpath)


def Config__getini_unknown_type(
    self, name: str, type: str, value: Union[str, List[str]]
):
    if type == "pathlist":
        # TODO: This assert is probably not valid in all cases.
        assert self.inipath is not None
        dp = self.inipath.parent
        input_values = shlex.split(value) if isinstance(value, str) else value
        return [legacy_path(str(dp / x)) for x in input_values]
    else:
        raise ValueError(f"unknown configuration type: {type}", value)


def Node_fspath(self: Node) -> LEGACY_PATH:
    """(deprecated) returns a legacy_path copy of self.path"""
    return legacy_path(self.path)


def Node_fspath_set(self: Node, value: LEGACY_PATH) -> None:
    self.path = Path(value)


@hookimpl(tryfirst=True)
def pytest_load_initial_conftests(early_config: Config) -> None:
    """Monkeypatch legacy path attributes in several classes, as early as possible."""
    mp = MonkeyPatch()
    early_config.add_cleanup(mp.undo)

    # Add Cache.makedir().
    mp.setattr(Cache, "makedir", Cache_makedir, raising=False)

    # Add FixtureRequest.fspath property.
    mp.setattr(FixtureRequest, "fspath", property(FixtureRequest_fspath), raising=False)

    # Add TerminalReporter.startdir property.
    mp.setattr(
        TerminalReporter, "startdir", property(TerminalReporter_startdir), raising=False
    )

    # Add Config.{invocation_dir,rootdir,inifile} properties.
    mp.setattr(Config, "invocation_dir", property(Config_invocation_dir), raising=False)
    mp.setattr(Config, "rootdir", property(Config_rootdir), raising=False)
    mp.setattr(Config, "inifile", property(Config_inifile), raising=False)

    # Add Session.startdir property.
    mp.setattr(Session, "startdir", property(Session_stardir), raising=False)

    # Add pathlist configuration type.
    mp.setattr(Config, "_getini_unknown_type", Config__getini_unknown_type)

    # Add Node.fspath property.
    mp.setattr(Node, "fspath", property(Node_fspath, Node_fspath_set), raising=False)


@hookimpl
def pytest_configure(config: Config) -> None:
    """Installs the LegacyTmpdirPlugin if the ``tmpdir`` plugin is also installed."""
    if config.pluginmanager.has_plugin("tmpdir"):
        mp = MonkeyPatch()
        config.add_cleanup(mp.undo)
        # Create TmpdirFactory and attach it to the config object.
        #
        # This is to comply with existing plugins which expect the handler to be
        # available at pytest_configure time, but ideally should be moved entirely
        # to the tmpdir_factory session fixture.
        try:
            tmp_path_factory = config._tmp_path_factory  # type: ignore[attr-defined]
        except AttributeError:
            # tmpdir plugin is blocked.
            pass
        else:
            _tmpdirhandler = TempdirFactory(tmp_path_factory, _ispytest=True)
            mp.setattr(config, "_tmpdirhandler", _tmpdirhandler, raising=False)

        config.pluginmanager.register(LegacyTmpdirPlugin, "legacypath-tmpdir")


@hookimpl
def pytest_plugin_registered(plugin: object, manager: PytestPluginManager) -> None:
    # pytester is not loaded by default and is commonly loaded from a conftest,
    # so checking for it in `pytest_configure` is not enough.
    is_pytester = plugin is manager.get_plugin("pytester")
    if is_pytester and not manager.is_registered(LegacyTestdirPlugin):
        manager.register(LegacyTestdirPlugin, "legacypath-pytester")