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"""Per-test stdout/stderr capturing mechanism."""
import abc
import collections
import contextlib
import io
import os
import sys
from io import UnsupportedOperation
from tempfile import TemporaryFile
from types import TracebackType
from typing import Any
from typing import AnyStr
from typing import BinaryIO
from typing import Generator
from typing import Generic
from typing import Iterable
from typing import Iterator
from typing import List
from typing import NamedTuple
from typing import Optional
from typing import TextIO
from typing import Tuple
from typing import Type
from typing import TYPE_CHECKING
from typing import Union

from _pytest.compat import final
from _pytest.config import Config
from _pytest.config import hookimpl
from _pytest.config.argparsing import Parser
from _pytest.deprecated import check_ispytest
from _pytest.fixtures import fixture
from _pytest.fixtures import SubRequest
from _pytest.nodes import Collector
from _pytest.nodes import File
from _pytest.nodes import Item

if TYPE_CHECKING:
    from typing_extensions import Final
    from typing_extensions import Literal

_CaptureMethod = Literal["fd", "sys", "no", "tee-sys"]

def pytest_addoption(parser: Parser) -> None:
    group = parser.getgroup("general")
    group._addoption(
        "--capture",
        action="store",
        default="fd",
        metavar="method",
        choices=["fd", "sys", "no", "tee-sys"],
        help="Per-test capturing method: one of fd|sys|no|tee-sys",
    )
    group._addoption(
        "-s",
        action="store_const",
        const="no",
        dest="capture",
        help="Shortcut for --capture=no",
    )

def _colorama_workaround() -> None:
    """Ensure colorama is imported so that it attaches to the correct stdio
    handles on Windows.

colorama uses the terminal on import time. So if something does the
    first import of colorama while I/O capture is active, colorama will
    fail in various ways.
    """
    if sys.platform.startswith("win32"):
        try:
            import colorama  # noqa: F401
        except ImportError:
            pass

def _windowsconsoleio_workaround(stream: TextIO) -> None:
    """Workaround for Windows Unicode console handling.

Python 3.6 implemented Unicode console handling for Windows. This works
    by reading/writing to the raw console handle using
    ``{Read,Write}ConsoleW``.

The problem is that we are going to ``dup2`` over the stdio file
    descriptors when doing ``FDCapture`` and this will ``CloseHandle`` the
    handles used by Python to write to the console. Though there is still some
    weirdness and the console handle seems to only be closed randomly and not
    on the first call to ``CloseHandle``, or maybe it gets reopened with the
    same handle value when we suspend capturing.

The workaround in this case will reopen stdio with a different fd which
    also means a different handle by replicating the logic in
    "Py_lifecycle.c:initstdio/create_stdio".

:param stream:
        In practice ``sys.stdout`` or ``sys.stderr``, but given
        here as parameter for unittesting purposes.

See https://github.com/pytest-dev/py/issues/103.
    """
    if not sys.platform.startswith("win32") or hasattr(sys, "pypy_version_info"):
        return

# Bail out if ``stream`` doesn't seem like a proper ``io`` stream (#2666).
    if not hasattr(stream, "buffer"):  # type: ignore[unreachable]
        return

buffered = hasattr(stream.buffer, "raw")
    raw_stdout = stream.buffer.raw if buffered else stream.buffer  # type: ignore[attr-defined]

if not isinstance(raw_stdout, io._WindowsConsoleIO):  # type: ignore[attr-defined]
        return

def _reopen_stdio(f, mode):
        if not buffered and mode[0] == "w":
            buffering = 0
        else:
            buffering = -1

return io.TextIOWrapper(
            open(os.dup(f.fileno()), mode, buffering),
            f.encoding,
            f.errors,
            f.newlines,
            f.line_buffering,
        )

sys.stdin = _reopen_stdio(sys.stdin, "rb")
    sys.stdout = _reopen_stdio(sys.stdout, "wb")
    sys.stderr = _reopen_stdio(sys.stderr, "wb")

@hookimpl(hookwrapper=True)
def pytest_load_initial_conftests(early_config: Config):
    ns = early_config.known_args_namespace
    if ns.capture == "fd":
        _windowsconsoleio_workaround(sys.stdout)
    _colorama_workaround()
    pluginmanager = early_config.pluginmanager
    capman = CaptureManager(ns.capture)
    pluginmanager.register(capman, "capturemanager")

# Make sure that capturemanager is properly reset at final shutdown.
    early_config.add_cleanup(capman.stop_global_capturing)

# Finally trigger conftest loading but while capturing (issue #93).
    capman.start_global_capturing()
    outcome = yield
    capman.suspend_global_capture()
    if outcome.excinfo is not None:
        out, err = capman.read_global_capture()
        sys.stdout.write(out)
        sys.stderr.write(err)

# IO Helpers.

class EncodedFile(io.TextIOWrapper):
    __slots__ = ()

@property
    def name(self) -> str:
        # Ensure that file.name is a string. Workaround for a Python bug
        # fixed in >=3.7.4: https://bugs.python.org/issue36015
        return repr(self.buffer)

@property
    def mode(self) -> str:
        # TextIOWrapper doesn't expose a mode, but at least some of our
        # tests check it.
        return self.buffer.mode.replace("b", "")

class CaptureIO(io.TextIOWrapper):
    def __init__(self) -> None:
        super().__init__(io.BytesIO(), encoding="UTF-8", newline="", write_through=True)

def getvalue(self) -> str:
        assert isinstance(self.buffer, io.BytesIO)
        return self.buffer.getvalue().decode("UTF-8")

class TeeCaptureIO(CaptureIO):
    def __init__(self, other: TextIO) -> None:
        self._other = other
        super().__init__()

def write(self, s: str) -> int:
        super().write(s)
        return self._other.write(s)

class DontReadFromInput(TextIO):
    @property
    def encoding(self) -> str:
        return sys.__stdin__.encoding

def read(self, size: int = -1) -> str:
        raise OSError(
            "pytest: reading from stdin while output is captured!  Consider using `-s`."
        )

readline = read

def __next__(self) -> str:
        return self.readline()

def readlines(self, hint: Optional[int] = -1) -> List[str]:
        raise OSError(
            "pytest: reading from stdin while output is captured!  Consider using `-s`."
        )

def __iter__(self) -> Iterator[str]:
        return self

def fileno(self) -> int:
        raise UnsupportedOperation("redirected stdin is pseudofile, has no fileno()")

def flush(self) -> None:
        raise UnsupportedOperation("redirected stdin is pseudofile, has no flush()")

def isatty(self) -> bool:
        return False

def close(self) -> None:
        pass

def readable(self) -> bool:
        return False

def seek(self, offset: int, whence: int = 0) -> int:
        raise UnsupportedOperation("redirected stdin is pseudofile, has no seek(int)")

def seekable(self) -> bool:
        return False

def tell(self) -> int:
        raise UnsupportedOperation("redirected stdin is pseudofile, has no tell()")

def truncate(self, size: Optional[int] = None) -> int:
        raise UnsupportedOperation("cannot truncate stdin")

def write(self, data: str) -> int:
        raise UnsupportedOperation("cannot write to stdin")

def writelines(self, lines: Iterable[str]) -> None:
        raise UnsupportedOperation("Cannot write to stdin")

def writable(self) -> bool:
        return False

def __enter__(self) -> "DontReadFromInput":
        return self

def __exit__(
        self,
        type: Optional[Type[BaseException]],
        value: Optional[BaseException],
        traceback: Optional[TracebackType],
    ) -> None:
        pass

@property
    def buffer(self) -> BinaryIO:
        # The str/bytes doesn't actually matter in this type, so OK to fake.
        return self  # type: ignore[return-value]

# Capture classes.

class CaptureBase(abc.ABC, Generic[AnyStr]):
    EMPTY_BUFFER: AnyStr

@abc.abstractmethod
    def __init__(self, fd: int) -> None:
        raise NotImplementedError()

@abc.abstractmethod
    def start(self) -> None:
        raise NotImplementedError()

@abc.abstractmethod
    def done(self) -> None:
        raise NotImplementedError()

@abc.abstractmethod
    def suspend(self) -> None:
        raise NotImplementedError()

@abc.abstractmethod
    def resume(self) -> None:
        raise NotImplementedError()

@abc.abstractmethod
    def writeorg(self, data: AnyStr) -> None:
        raise NotImplementedError()

@abc.abstractmethod
    def snap(self) -> AnyStr:
        raise NotImplementedError()

patchsysdict = {0: "stdin", 1: "stdout", 2: "stderr"}

class NoCapture(CaptureBase[str]):
    EMPTY_BUFFER = ""

def __init__(self, fd: int) -> None:
        pass

def start(self) -> None:
        pass

def done(self) -> None:
        pass

def suspend(self) -> None:
        pass

def resume(self) -> None:
        pass

def snap(self) -> str:
        return ""

def writeorg(self, data: str) -> None:
        pass

class SysCaptureBase(CaptureBase[AnyStr]):
    def __init__(
        self, fd: int, tmpfile: Optional[TextIO] = None, *, tee: bool = False
    ) -> None:
        name = patchsysdict[fd]
        self._old: TextIO = getattr(sys, name)
        self.name = name
        if tmpfile is None:
            if name == "stdin":
                tmpfile = DontReadFromInput()
            else:
                tmpfile = CaptureIO() if not tee else TeeCaptureIO(self._old)
        self.tmpfile = tmpfile
        self._state = "initialized"

def repr(self, class_name: str) -> str:
        return "<{} {} _old={} _state={!r} tmpfile={!r}>".format(
            class_name,
            self.name,
            hasattr(self, "_old") and repr(self._old) or "<UNSET>",
            self._state,
            self.tmpfile,
        )

def __repr__(self) -> str:
        return "<{} {} _old={} _state={!r} tmpfile={!r}>".format(
            self.__class__.__name__,
            self.name,
            hasattr(self, "_old") and repr(self._old) or "<UNSET>",
            self._state,
            self.tmpfile,
        )

def _assert_state(self, op: str, states: Tuple[str, ...]) -> None:
        assert (
            self._state in states
        ), "cannot {} in state {!r}: expected one of {}".format(
            op, self._state, ", ".join(states)
        )

def start(self) -> None:
        self._assert_state("start", ("initialized",))
        setattr(sys, self.name, self.tmpfile)
        self._state = "started"

def done(self) -> None:
        self._assert_state("done", ("initialized", "started", "suspended", "done"))
        if self._state == "done":
            return
        setattr(sys, self.name, self._old)
        del self._old
        self.tmpfile.close()
        self._state = "done"

def suspend(self) -> None:
        self._assert_state("suspend", ("started", "suspended"))
        setattr(sys, self.name, self._old)
        self._state = "suspended"

def resume(self) -> None:
        self._assert_state("resume", ("started", "suspended"))
        if self._state == "started":
            return
        setattr(sys, self.name, self.tmpfile)
        self._state = "started"

class SysCaptureBinary(SysCaptureBase[bytes]):
    EMPTY_BUFFER = b""

def snap(self) -> bytes:
        self._assert_state("snap", ("started", "suspended"))
        self.tmpfile.seek(0)
        res = self.tmpfile.buffer.read()
        self.tmpfile.seek(0)
        self.tmpfile.truncate()
        return res

def writeorg(self, data: bytes) -> None:
        self._assert_state("writeorg", ("started", "suspended"))
        self._old.flush()
        self._old.buffer.write(data)
        self._old.buffer.flush()

class SysCapture(SysCaptureBase[str]):
    EMPTY_BUFFER = ""

def snap(self) -> str:
        self._assert_state("snap", ("started", "suspended"))
        assert isinstance(self.tmpfile, CaptureIO)
        res = self.tmpfile.getvalue()
        self.tmpfile.seek(0)
        self.tmpfile.truncate()
        return res

def writeorg(self, data: str) -> None:
        self._assert_state("writeorg", ("started", "suspended"))
        self._old.write(data)
        self._old.flush()

class FDCaptureBase(CaptureBase[AnyStr]):
    def __init__(self, targetfd: int) -> None:
        self.targetfd = targetfd

try:
            os.fstat(targetfd)
        except OSError:
            # FD capturing is conceptually simple -- create a temporary file,
            # redirect the FD to it, redirect back when done. But when the
            # target FD is invalid it throws a wrench into this lovely scheme.
            #
            # Tests themselves shouldn't care if the FD is valid, FD capturing
            # should work regardless of external circumstances. So falling back
            # to just sys capturing is not a good option.
            #
            # Further complications are the need to support suspend() and the
            # possibility of FD reuse (e.g. the tmpfile getting the very same
            # target FD). The following approach is robust, I believe.
            self.targetfd_invalid: Optional[int] = os.open(os.devnull, os.O_RDWR)
            os.dup2(self.targetfd_invalid, targetfd)
        else:
            self.targetfd_invalid = None
        self.targetfd_save = os.dup(targetfd)

if targetfd == 0:
            self.tmpfile = open(os.devnull, encoding="utf-8")
            self.syscapture: CaptureBase[str] = SysCapture(targetfd)
        else:
            self.tmpfile = EncodedFile(
                TemporaryFile(buffering=0),
                encoding="utf-8",
                errors="replace",
                newline="",
                write_through=True,
            )
            if targetfd in patchsysdict:
                self.syscapture = SysCapture(targetfd, self.tmpfile)
            else:
                self.syscapture = NoCapture(targetfd)

self._state = "initialized"

def __repr__(self) -> str:
        return "<{} {} oldfd={} _state={!r} tmpfile={!r}>".format(
            self.__class__.__name__,
            self.targetfd,
            self.targetfd_save,
            self._state,
            self.tmpfile,
        )

def start(self) -> None:
        """Start capturing on targetfd using memorized tmpfile."""
        self._assert_state("start", ("initialized",))
        os.dup2(self.tmpfile.fileno(), self.targetfd)
        self.syscapture.start()
        self._state = "started"

def done(self) -> None:
        """Stop capturing, restore streams, return original capture file,
        seeked to position zero."""
        self._assert_state("done", ("initialized", "started", "suspended", "done"))
        if self._state == "done":
            return
        os.dup2(self.targetfd_save, self.targetfd)
        os.close(self.targetfd_save)
        if self.targetfd_invalid is not None:
            if self.targetfd_invalid != self.targetfd:
                os.close(self.targetfd)
            os.close(self.targetfd_invalid)
        self.syscapture.done()
        self.tmpfile.close()
        self._state = "done"

def suspend(self) -> None:
        self._assert_state("suspend", ("started", "suspended"))
        if self._state == "suspended":
            return
        self.syscapture.suspend()
        os.dup2(self.targetfd_save, self.targetfd)
        self._state = "suspended"

def resume(self) -> None:
        self._assert_state("resume", ("started", "suspended"))
        if self._state == "started":
            return
        self.syscapture.resume()
        os.dup2(self.tmpfile.fileno(), self.targetfd)
        self._state = "started"

class FDCaptureBinary(FDCaptureBase[bytes]):
    """Capture IO to/from a given OS-level file descriptor.

snap() produces `bytes`.
    """

EMPTY_BUFFER = b""

def writeorg(self, data: bytes) -> None:
        """Write to original file descriptor."""
        self._assert_state("writeorg", ("started", "suspended"))
        os.write(self.targetfd_save, data)

class FDCapture(FDCaptureBase[str]):
    """Capture IO to/from a given OS-level file descriptor.

snap() produces text.
    """

EMPTY_BUFFER = ""

def snap(self) -> str:
        self._assert_state("snap", ("started", "suspended"))
        self.tmpfile.seek(0)
        res = self.tmpfile.read()
        self.tmpfile.seek(0)
        self.tmpfile.truncate()
        return res

def writeorg(self, data: str) -> None:
        """Write to original file descriptor."""
        self._assert_state("writeorg", ("started", "suspended"))
        # XXX use encoding of original stream
        os.write(self.targetfd_save, data.encode("utf-8"))

# MultiCapture

# Generic NamedTuple only supported since Python 3.11.
if sys.version_info >= (3, 11) or TYPE_CHECKING:

@final
    class CaptureResult(NamedTuple, Generic[AnyStr]):
        """The result of :method:`CaptureFixture.readouterr`."""

out: AnyStr
        err: AnyStr

else:

class CaptureResult(
        collections.namedtuple("CaptureResult", ["out", "err"]), Generic[AnyStr]
    ):
        """The result of :method:`CaptureFixture.readouterr`."""

__slots__ = ()

class MultiCapture(Generic[AnyStr]):
    _state = None
    _in_suspended = False

def __init__(
        self,
        in_: Optional[CaptureBase[AnyStr]],
        out: Optional[CaptureBase[AnyStr]],
        err: Optional[CaptureBase[AnyStr]],
    ) -> None:
        self.in_: Optional[CaptureBase[AnyStr]] = in_
        self.out: Optional[CaptureBase[AnyStr]] = out
        self.err: Optional[CaptureBase[AnyStr]] = err

def __repr__(self) -> str:
        return "<MultiCapture out={!r} err={!r} in_={!r} _state={!r} _in_suspended={!r}>".format(
            self.out,
            self.err,
            self.in_,
            self._state,
            self._in_suspended,
        )

def start_capturing(self) -> None:
        self._state = "started"
        if self.in_:
            self.in_.start()
        if self.out:
            self.out.start()
        if self.err:
            self.err.start()

def pop_outerr_to_orig(self) -> Tuple[AnyStr, AnyStr]:
        """Pop current snapshot out/err capture and flush to orig streams."""
        out, err = self.readouterr()
        if out:
            assert self.out is not None
            self.out.writeorg(out)
        if err:
            assert self.err is not None
            self.err.writeorg(err)
        return out, err

def suspend_capturing(self, in_: bool = False) -> None:
        self._state = "suspended"
        if self.out:
            self.out.suspend()
        if self.err:
            self.err.suspend()
        if in_ and self.in_:
            self.in_.suspend()
            self._in_suspended = True

def resume_capturing(self) -> None:
        self._state = "started"
        if self.out:
            self.out.resume()
        if self.err:
            self.err.resume()
        if self._in_suspended:
            assert self.in_ is not None
            self.in_.resume()
            self._in_suspended = False

def stop_capturing(self) -> None:
        """Stop capturing and reset capturing streams."""
        if self._state == "stopped":
            raise ValueError("was already stopped")
        self._state = "stopped"
        if self.out:
            self.out.done()
        if self.err:
            self.err.done()
        if self.in_:
            self.in_.done()

def is_started(self) -> bool:
        """Whether actively capturing -- not suspended or stopped."""
        return self._state == "started"

def readouterr(self) -> CaptureResult[AnyStr]:
        out = self.out.snap() if self.out else ""
        err = self.err.snap() if self.err else ""
        # TODO: This type error is real, need to fix.
        return CaptureResult(out, err)  # type: ignore[arg-type]

def _get_multicapture(method: "_CaptureMethod") -> MultiCapture[str]:
    if method == "fd":
        return MultiCapture(in_=FDCapture(0), out=FDCapture(1), err=FDCapture(2))
    elif method == "sys":
        return MultiCapture(in_=SysCapture(0), out=SysCapture(1), err=SysCapture(2))
    elif method == "no":
        return MultiCapture(in_=None, out=None, err=None)
    elif method == "tee-sys":
        return MultiCapture(
            in_=None, out=SysCapture(1, tee=True), err=SysCapture(2, tee=True)
        )
    raise ValueError(f"unknown capturing method: {method!r}")

# CaptureManager and CaptureFixture

class CaptureManager:
    """The capture plugin.

Manages that the appropriate capture method is enabled/disabled during
    collection and each test phase (setup, call, teardown). After each of
    those points, the captured output is obtained and attached to the
    collection/runtest report.

There are two levels of capture:

* global: enabled by default and can be suppressed by the ``-s``
      option. This is always enabled/disabled during collection and each test
      phase.

* fixture: when a test function or one of its fixture depend on the
      ``capsys`` or ``capfd`` fixtures. In this case special handling is
      needed to ensure the fixtures take precedence over the global capture.
    """

def __init__(self, method: "_CaptureMethod") -> None:
        self._method: Final = method
        self._global_capturing: Optional[MultiCapture[str]] = None
        self._capture_fixture: Optional[CaptureFixture[Any]] = None

def __repr__(self) -> str:
        return "<CaptureManager _method={!r} _global_capturing={!r} _capture_fixture={!r}>".format(
            self._method, self._global_capturing, self._capture_fixture
        )

def is_capturing(self) -> Union[str, bool]:
        if self.is_globally_capturing():
            return "global"
        if self._capture_fixture:
            return "fixture %s" % self._capture_fixture.request.fixturename
        return False

# Global capturing control

def is_globally_capturing(self) -> bool:
        return self._method != "no"

def start_global_capturing(self) -> None:
        assert self._global_capturing is None
        self._global_capturing = _get_multicapture(self._method)
        self._global_capturing.start_capturing()

def stop_global_capturing(self) -> None:
        if self._global_capturing is not None:
            self._global_capturing.pop_outerr_to_orig()
            self._global_capturing.stop_capturing()
            self._global_capturing = None

def resume_global_capture(self) -> None:
        # During teardown of the python process, and on rare occasions, capture
        # attributes can be `None` while trying to resume global capture.
        if self._global_capturing is not None:
            self._global_capturing.resume_capturing()

def suspend_global_capture(self, in_: bool = False) -> None:
        if self._global_capturing is not None:
            self._global_capturing.suspend_capturing(in_=in_)

def suspend(self, in_: bool = False) -> None:
        # Need to undo local capsys-et-al if it exists before disabling global capture.
        self.suspend_fixture()
        self.suspend_global_capture(in_)

def resume(self) -> None:
        self.resume_global_capture()
        self.resume_fixture()

def read_global_capture(self) -> CaptureResult[str]:
        assert self._global_capturing is not None
        return self._global_capturing.readouterr()

# Fixture Control

def set_fixture(self, capture_fixture: "CaptureFixture[Any]") -> None:
        if self._capture_fixture:
            current_fixture = self._capture_fixture.request.fixturename
            requested_fixture = capture_fixture.request.fixturename
            capture_fixture.request.raiseerror(
                "cannot use {} and {} at the same time".format(
                    requested_fixture, current_fixture
                )
            )
        self._capture_fixture = capture_fixture

def unset_fixture(self) -> None:
        self._capture_fixture = None

def activate_fixture(self) -> None:
        """If the current item is using ``capsys`` or ``capfd``, activate
        them so they take precedence over the global capture."""
        if self._capture_fixture:
            self._capture_fixture._start()

def deactivate_fixture(self) -> None:
        """Deactivate the ``capsys`` or ``capfd`` fixture of this item, if any."""
        if self._capture_fixture:
            self._capture_fixture.close()

def suspend_fixture(self) -> None:
        if self._capture_fixture:
            self._capture_fixture._suspend()

def resume_fixture(self) -> None:
        if self._capture_fixture:
            self._capture_fixture._resume()

# Helper context managers

@contextlib.contextmanager
    def global_and_fixture_disabled(self) -> Generator[None, None, None]:
        """Context manager to temporarily disable global and current fixture capturing."""
        do_fixture = self._capture_fixture and self._capture_fixture._is_started()
        if do_fixture:
            self.suspend_fixture()
        do_global = self._global_capturing and self._global_capturing.is_started()
        if do_global:
            self.suspend_global_capture()
        try:
            yield
        finally:
            if do_global:
                self.resume_global_capture()
            if do_fixture:
                self.resume_fixture()

@contextlib.contextmanager
    def item_capture(self, when: str, item: Item) -> Generator[None, None, None]:
        self.resume_global_capture()
        self.activate_fixture()
        try:
            yield
        finally:
            self.deactivate_fixture()
            self.suspend_global_capture(in_=False)

out, err = self.read_global_capture()
        item.add_report_section(when, "stdout", out)
        item.add_report_section(when, "stderr", err)

# Hooks

@hookimpl(hookwrapper=True)
    def pytest_make_collect_report(self, collector: Collector):
        if isinstance(collector, File):
            self.resume_global_capture()
            outcome = yield
            self.suspend_global_capture()
            out, err = self.read_global_capture()
            rep = outcome.get_result()
            if out:
                rep.sections.append(("Captured stdout", out))
            if err:
                rep.sections.append(("Captured stderr", err))
        else:
            yield

@hookimpl(hookwrapper=True)
    def pytest_runtest_setup(self, item: Item) -> Generator[None, None, None]:
        with self.item_capture("setup", item):
            yield

@hookimpl(hookwrapper=True)
    def pytest_runtest_call(self, item: Item) -> Generator[None, None, None]:
        with self.item_capture("call", item):
            yield

@hookimpl(hookwrapper=True)
    def pytest_runtest_teardown(self, item: Item) -> Generator[None, None, None]:
        with self.item_capture("teardown", item):
            yield

@hookimpl(tryfirst=True)
    def pytest_keyboard_interrupt(self) -> None:
        self.stop_global_capturing()

@hookimpl(tryfirst=True)
    def pytest_internalerror(self) -> None:
        self.stop_global_capturing()

class CaptureFixture(Generic[AnyStr]):
    """Object returned by the :fixture:`capsys`, :fixture:`capsysbinary`,
    :fixture:`capfd` and :fixture:`capfdbinary` fixtures."""

def __init__(
        self,
        captureclass: Type[CaptureBase[AnyStr]],
        request: SubRequest,
        *,
        _ispytest: bool = False,
    ) -> None:
        check_ispytest(_ispytest)
        self.captureclass: Type[CaptureBase[AnyStr]] = captureclass
        self.request = request
        self._capture: Optional[MultiCapture[AnyStr]] = None
        self._captured_out: AnyStr = self.captureclass.EMPTY_BUFFER
        self._captured_err: AnyStr = self.captureclass.EMPTY_BUFFER

def _start(self) -> None:
        if self._capture is None:
            self._capture = MultiCapture(
                in_=None,
                out=self.captureclass(1),
                err=self.captureclass(2),
            )
            self._capture.start_capturing()

def close(self) -> None:
        if self._capture is not None:
            out, err = self._capture.pop_outerr_to_orig()
            self._captured_out += out
            self._captured_err += err
            self._capture.stop_capturing()
            self._capture = None

def readouterr(self) -> CaptureResult[AnyStr]:
        """Read and return the captured output so far, resetting the internal
        buffer.

:returns:
            The captured content as a namedtuple with ``out`` and ``err``
            string attributes.
        """
        captured_out, captured_err = self._captured_out, self._captured_err
        if self._capture is not None:
            out, err = self._capture.readouterr()
            captured_out += out
            captured_err += err
        self._captured_out = self.captureclass.EMPTY_BUFFER
        self._captured_err = self.captureclass.EMPTY_BUFFER
        return CaptureResult(captured_out, captured_err)

def _suspend(self) -> None:
        """Suspend this fixture's own capturing temporarily."""
        if self._capture is not None:
            self._capture.suspend_capturing()

def _resume(self) -> None:
        """Resume this fixture's own capturing temporarily."""
        if self._capture is not None:
            self._capture.resume_capturing()

def _is_started(self) -> bool:
        """Whether actively capturing -- not disabled or closed."""
        if self._capture is not None:
            return self._capture.is_started()
        return False

@contextlib.contextmanager
    def disabled(self) -> Generator[None, None, None]:
        """Temporarily disable capturing while inside the ``with`` block."""
        capmanager: CaptureManager = self.request.config.pluginmanager.getplugin(
            "capturemanager"
        )
        with capmanager.global_and_fixture_disabled():
            yield

# The fixtures.

@fixture
def capsys(request: SubRequest) -> Generator[CaptureFixture[str], None, None]:
    r"""Enable text capturing of writes to ``sys.stdout`` and ``sys.stderr``.

The captured output is made available via ``capsys.readouterr()`` method
    calls, which return a ``(out, err)`` namedtuple.
    ``out`` and ``err`` will be ``text`` objects.

Returns an instance of :class:`CaptureFixture[str] <pytest.CaptureFixture>`.

Example:

.. code-block:: python

def test_output(capsys):
            print("hello")
            captured = capsys.readouterr()
            assert captured.out == "hello\n"
    """
    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
    capture_fixture = CaptureFixture(SysCapture, request, _ispytest=True)
    capman.set_fixture(capture_fixture)
    capture_fixture._start()
    yield capture_fixture
    capture_fixture.close()
    capman.unset_fixture()

@fixture
def capsysbinary(request: SubRequest) -> Generator[CaptureFixture[bytes], None, None]:
    r"""Enable bytes capturing of writes to ``sys.stdout`` and ``sys.stderr``.

The captured output is made available via ``capsysbinary.readouterr()``
    method calls, which return a ``(out, err)`` namedtuple.
    ``out`` and ``err`` will be ``bytes`` objects.

Returns an instance of :class:`CaptureFixture[bytes] <pytest.CaptureFixture>`.

Example:

.. code-block:: python

def test_output(capsysbinary):
            print("hello")
            captured = capsysbinary.readouterr()
            assert captured.out == b"hello\n"
    """
    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
    capture_fixture = CaptureFixture(SysCaptureBinary, request, _ispytest=True)
    capman.set_fixture(capture_fixture)
    capture_fixture._start()
    yield capture_fixture
    capture_fixture.close()
    capman.unset_fixture()

@fixture
def capfd(request: SubRequest) -> Generator[CaptureFixture[str], None, None]:
    r"""Enable text capturing of writes to file descriptors ``1`` and ``2``.

The captured output is made available via ``capfd.readouterr()`` method
    calls, which return a ``(out, err)`` namedtuple.
    ``out`` and ``err`` will be ``text`` objects.

Returns an instance of :class:`CaptureFixture[str] <pytest.CaptureFixture>`.

Example:

.. code-block:: python

def test_system_echo(capfd):
            os.system('echo "hello"')
            captured = capfd.readouterr()
            assert captured.out == "hello\n"
    """
    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
    capture_fixture = CaptureFixture(FDCapture, request, _ispytest=True)
    capman.set_fixture(capture_fixture)
    capture_fixture._start()
    yield capture_fixture
    capture_fixture.close()
    capman.unset_fixture()

@fixture
def capfdbinary(request: SubRequest) -> Generator[CaptureFixture[bytes], None, None]:
    r"""Enable bytes capturing of writes to file descriptors ``1`` and ``2``.

The captured output is made available via ``capfd.readouterr()`` method
    calls, which return a ``(out, err)`` namedtuple.
    ``out`` and ``err`` will be ``byte`` objects.

Returns an instance of :class:`CaptureFixture[bytes] <pytest.CaptureFixture>`.

Example:

.. code-block:: python

def test_system_echo(capfdbinary):
            os.system('echo "hello"')
            captured = capfdbinary.readouterr()
            assert captured.out == b"hello\n"

"""
    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
    capture_fixture = CaptureFixture(FDCaptureBinary, request, _ispytest=True)
    capman.set_fixture(capture_fixture)
    capture_fixture._start()
    yield capture_fixture
    capture_fixture.close()
    capman.unset_fixture()

İptal

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📝 capture.py

📝 capture.py

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