refactor: removed PytestWrapper class

src/_pytest/compat.py

@@ -3,7 +3,6 @@
 
 from __future__ import annotations
 
-import dataclasses
 import enum
 import functools
 import inspect
@@ -210,30 +209,15 @@ def ascii_escaped(val: bytes | str) -> str:
     return ret.translate(_non_printable_ascii_translate_table)
 
 
-# TODO: remove and replace with FixtureFunctionDefinition
-@dataclasses.dataclass
-class _PytestWrapper:
-    """Dummy wrapper around a function object for internal use only.
-
-    Used to correctly unwrap the underlying function object when we are
-    creating fixtures, because we wrap the function object ourselves with a
-    decorator to issue warnings when the fixture function is called directly.
-    """
-
-    obj: Any
-
-
 def get_real_func(obj):
     """Get the real function object of the (possibly) wrapped object by
-    functools.wraps or functools.partial."""
+    functools.wraps or functools.partial or pytest.fixture"""
+    from _pytest.fixtures import FixtureFunctionDefinition
+
     start_obj = obj
-    for i in range(100):
-        # __pytest_wrapped__ is set by @pytest.fixture when wrapping the fixture function
-        # to trigger a warning if it gets called directly instead of by pytest: we don't
-        # want to unwrap further than this otherwise we lose useful wrappings like @mock.patch (#3774)
-        new_obj = getattr(obj, "__pytest_wrapped__", None)
-        if isinstance(new_obj, _PytestWrapper):
-            obj = new_obj.obj
+    for _ in range(100):
+        if isinstance(obj, FixtureFunctionDefinition):
+            obj = obj.get_real_func()
             break
         new_obj = getattr(obj, "__wrapped__", None)
         if new_obj is None:

src/_pytest/fixtures.py

@@ -42,7 +42,6 @@ from _pytest._code import Source
 from _pytest._code.code import FormattedExcinfo
 from _pytest._code.code import TerminalRepr
 from _pytest._io import TerminalWriter
-from _pytest.compat import _PytestWrapper
 from _pytest.compat import assert_never
 from _pytest.compat import get_real_func
 from _pytest.compat import getfuncargnames
@@ -1204,7 +1203,6 @@ class FixtureFunctionDefinition:
         # Using isinstance on every object in code might execute code that is not intended to be executed.
         # Like lazy loaded classes.
         self._pytestfixturefunction = fixture_function_marker
-        self.__pytest_wrapped__ = _PytestWrapper(function)
         self.fixture_function_marker = fixture_function_marker
         self.fixture_function = function
         self.instance = instance

testing/test_compat.py

@@ -7,7 +7,6 @@ import sys
 from typing import TYPE_CHECKING
 from typing import Union
 
-from _pytest.compat import _PytestWrapper
 from _pytest.compat import assert_never
 from _pytest.compat import get_real_func
 from _pytest.compat import is_generator
@@ -52,8 +51,8 @@ def test_real_func_loop_limit() -> None:
     with pytest.raises(
         ValueError,
         match=(
-            "could not find real function of <Evil left=800>\n"
-            "stopped at <Evil left=800>"
+            "could not find real function of <Evil left=900>\n"
+            "stopped at <Evil left=900>"
         ),
     ):
         get_real_func(evil)
@@ -78,10 +77,13 @@ def test_get_real_func() -> None:
     wrapped_func2 = decorator(decorator(wrapped_func))
     assert get_real_func(wrapped_func2) is func
 
-    # special case for __pytest_wrapped__ attribute: used to obtain the function up until the point
-    # a function was wrapped by pytest itself
-    wrapped_func2.__pytest_wrapped__ = _PytestWrapper(wrapped_func)
-    assert get_real_func(wrapped_func2) is wrapped_func
+    # obtain the function up until the point a function was wrapped by pytest itself
+    @pytest.fixture
+    def wrapped_func3():
+        pass
+
+    wrapped_func4 = decorator(wrapped_func3)
+    assert get_real_func(wrapped_func4) is wrapped_func3.get_real_func()
 
 
 def test_get_real_func_partial() -> None: