Fix `disable_test_id_escaping_and_forfeit_all_rights_to_community_sup…

…port` option when using `pytest.param(..., id="...")`

Fixes #9037

---------

Co-authored-by: Ronny Pfannschmidt <[email protected]>
Co-authored-by: Bruno Oliveira <[email protected]>

AUTHORS

@@ -408,6 +408,7 @@ Sviatoslav Sydorenko
 Sylvain Marié
 Tadek Teleżyński
 Takafumi Arakaki
+Takumi Otani
 Taneli Hukkinen
 Tanvi Mehta
 Tanya Agarwal

changelog/9037.bugfix.rst

@@ -0,0 +1 @@
+Honor :confval:`disable_test_id_escaping_and_forfeit_all_rights_to_community_support` when escaping ids in parametrized tests.

doc/en/reference/reference.rst

@@ -1332,6 +1332,29 @@ passed multiple times. The expected format is ``name=value``. For example::
         console_output_style = classic
 
 
+.. confval:: disable_test_id_escaping_and_forfeit_all_rights_to_community_support
+
+   .. versionadded:: 4.4
+
+   pytest by default escapes any non-ascii characters used in unicode strings
+   for the parametrization because it has several downsides.
+   If however you would like to use unicode strings in parametrization
+   and see them in the terminal as is (non-escaped), use this option
+   in your ``pytest.ini``:
+
+   .. code-block:: ini
+
+       [pytest]
+       disable_test_id_escaping_and_forfeit_all_rights_to_community_support = True
+
+   Keep in mind however that this might cause unwanted side effects and
+   even bugs depending on the OS used and plugins currently installed,
+   so use it at your own risk.
+
+   Default: ``False``.
+
+   See :ref:`parametrizemark`.
+
 .. confval:: doctest_encoding
 
 

src/_pytest/mark/structures.py

@@ -21,7 +21,6 @@
 import warnings
 
 from .._code import getfslineno
-from ..compat import ascii_escaped
 from ..compat import NOTSET
 from ..compat import NotSetType
 from _pytest.config import Config
@@ -97,7 +96,6 @@ def param(
         if id is not None:
             if not isinstance(id, str):
                 raise TypeError(f"Expected id to be a string, got {type(id)}: {id!r}")
-            id = ascii_escaped(id)
         return cls(values, marks, id)
 
     @classmethod

src/_pytest/python.py

@@ -924,7 +924,7 @@ def _resolve_ids(self) -> Iterable[str]:
         for idx, parameterset in enumerate(self.parametersets):
             if parameterset.id is not None:
                 # ID provided directly - pytest.param(..., id="...")
-                yield parameterset.id
+                yield _ascii_escaped_by_config(parameterset.id, self.config)
             elif self.ids and idx < len(self.ids) and self.ids[idx] is not None:
                 # ID provided in the IDs list - parametrize(..., ids=[...]).
                 yield self._idval_from_value_required(self.ids[idx], idx)

testing/python/metafunc.py

@@ -625,6 +625,37 @@ def getini(self, name):
             ).make_unique_parameterset_ids()
             assert result == [expected]
 
+    def test_idmaker_with_param_id_and_config(self) -> None:
+        """Unit test for expected behavior to create ids with pytest.param(id=...) and
+        disable_test_id_escaping_and_forfeit_all_rights_to_community_support
+        option (#9037).
+        """
+
+        class MockConfig:
+            def __init__(self, config):
+                self.config = config
+
+            def getini(self, name):
+                return self.config[name]
+
+        option = "disable_test_id_escaping_and_forfeit_all_rights_to_community_support"
+
+        values: list[tuple[Any, str]] = [
+            (MockConfig({option: True}), "ação"),
+            (MockConfig({option: False}), "a\\xe7\\xe3o"),
+        ]
+        for config, expected in values:
+            result = IdMaker(
+                ("a",),
+                [pytest.param("string", id="ação")],
+                None,
+                None,
+                config,
+                None,
+                None,
+            ).make_unique_parameterset_ids()
+            assert result == [expected]
+
     def test_idmaker_duplicated_empty_str(self) -> None:
         """Regression test for empty strings parametrized more than once (#11563)."""
         result = IdMaker(