✏️ Editing: warning_types.py

import dataclasses
import inspect
import warnings
from types import FunctionType
from typing import Any
from typing import Generic
from typing import Type
from typing import TypeVar

from _pytest.compat import final

class PytestWarning(UserWarning):
    """Base class for all warnings emitted by pytest."""

__module__ = "pytest"

@final
class PytestAssertRewriteWarning(PytestWarning):
    """Warning emitted by the pytest assert rewrite module."""

__module__ = "pytest"

@final
class PytestCacheWarning(PytestWarning):
    """Warning emitted by the cache plugin in various situations."""

__module__ = "pytest"

@final
class PytestConfigWarning(PytestWarning):
    """Warning emitted for configuration issues."""

__module__ = "pytest"

@final
class PytestCollectionWarning(PytestWarning):
    """Warning emitted when pytest is not able to collect a file or symbol in a module."""

__module__ = "pytest"

class PytestDeprecationWarning(PytestWarning, DeprecationWarning):
    """Warning class for features that will be removed in a future version."""

__module__ = "pytest"

class PytestRemovedIn8Warning(PytestDeprecationWarning):
    """Warning class for features that will be removed in pytest 8."""

__module__ = "pytest"

class PytestReturnNotNoneWarning(PytestRemovedIn8Warning):
    """Warning emitted when a test function is returning value other than None."""

__module__ = "pytest"

@final
class PytestExperimentalApiWarning(PytestWarning, FutureWarning):
    """Warning category used to denote experiments in pytest.

Use sparingly as the API might change or even be removed completely in a
    future version.
    """

__module__ = "pytest"

@classmethod
    def simple(cls, apiname: str) -> "PytestExperimentalApiWarning":
        return cls(
            "{apiname} is an experimental api that may change over time".format(
                apiname=apiname
            )
        )

@final
class PytestUnhandledCoroutineWarning(PytestReturnNotNoneWarning):
    """Warning emitted for an unhandled coroutine.

A coroutine was encountered when collecting test functions, but was not
    handled by any async-aware plugin.
    Coroutine test functions are not natively supported.
    """

__module__ = "pytest"

@final
class PytestUnknownMarkWarning(PytestWarning):
    """Warning emitted on use of unknown markers.

See :ref:`mark` for details.
    """

__module__ = "pytest"

@final
class PytestUnraisableExceptionWarning(PytestWarning):
    """An unraisable exception was reported.

Unraisable exceptions are exceptions raised in :meth:`__del__ <object.__del__>`
    implementations and similar situations when the exception cannot be raised
    as normal.
    """

__module__ = "pytest"

@final
class PytestUnhandledThreadExceptionWarning(PytestWarning):
    """An unhandled exception occurred in a :class:`~threading.Thread`.

Such exceptions don't propagate normally.
    """

__module__ = "pytest"

_W = TypeVar("_W", bound=PytestWarning)

@final
@dataclasses.dataclass
class UnformattedWarning(Generic[_W]):
    """A warning meant to be formatted during runtime.

This is used to hold warnings that need to format their message at runtime,
    as opposed to a direct message.
    """

category: Type["_W"]
    template: str

def format(self, **kwargs: Any) -> _W:
        """Return an instance of the warning category, formatted with given kwargs."""
        return self.category(self.template.format(**kwargs))

def warn_explicit_for(method: FunctionType, message: PytestWarning) -> None:
    """
    Issue the warning :param:`message` for the definition of the given :param:`method`

this helps to log warnings for functions defined prior to finding an issue with them
    (like hook wrappers being marked in a legacy mechanism)
    """
    lineno = method.__code__.co_firstlineno
    filename = inspect.getfile(method)
    module = method.__module__
    mod_globals = method.__globals__
    try:
        warnings.warn_explicit(
            message,
            type(message),
            filename=filename,
            module=module,
            registry=mod_globals.setdefault("__warningregistry__", {}),
            lineno=lineno,
        )
    except Warning as w:
        # If warnings are errors (e.g. -Werror), location information gets lost, so we add it to the message.
        raise type(w)(f"{w}\n at {filename}:{lineno}") from None

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