Fix parametrized mark over staticmethod decorator

AUTHORS

@@ -150,6 +150,7 @@ Eric Yuan
 Erik Aronesty
 Erik Hasse
 Erik M. Bray
+Ethan Wass
 Evan Kepner
 Evgeny Seliverstov
 Fabian Sturm

changelog/12863.bugfix.rst

@@ -0,0 +1 @@
+Fix applying markers, including :ref:`pytest.mark.parametrize <pytest.mark.parametrize ref>` when placed above `@staticmethod` or `@classmethod`.

pyproject.toml

@@ -334,7 +334,7 @@ disable = [
 
 [tool.codespell]
 ignore-words-list = "afile,asend,asser,assertio,feld,hove,ned,noes,notin,paramete,parth,socio-economic,tesults,varius,wil"
-skip = "*/plugin_list.rst"
+skip = "AUTHORS,*/plugin_list.rst"
 write-changes = true
 
 [tool.check-wheel-contents]

src/_pytest/mark/structures.py

@@ -349,8 +349,13 @@ def __call__(self, *args: object, **kwargs: object):
         if args and not kwargs:
             func = args[0]
             is_class = inspect.isclass(func)
-            if len(args) == 1 and (istestfunc(func) or is_class):
-                store_mark(func, self.mark, stacklevel=3)
+            # For staticmethods/classmethods, the marks are eventually fetched from the
+            # function object, not the descriptor, so unwrap.
+            unwrapped_func = func
+            if isinstance(func, (staticmethod, classmethod)):
+                unwrapped_func = func.__func__
+            if len(args) == 1 and (istestfunc(unwrapped_func) or is_class):
+                store_mark(unwrapped_func, self.mark, stacklevel=3)
                 return func
         return self.with_args(*args, **kwargs)
 

testing/test_mark.py

@@ -1226,3 +1226,38 @@ def test_attrs(self):
     )
     result = pytester.runpytest(foo)
     result.assert_outcomes(passed=1)
+
+
+def test_mark_parametrize_over_staticmethod(pytester: Pytester) -> None:
+    """Check that applying marks works as intended on classmethods and staticmethods.
+
+    Regression test for #12863.
+    """
+    pytester.makepyfile(
+        """
+        import pytest
+
+        class TestClass:
+            @pytest.mark.parametrize("value", [1, 2])
+            @classmethod
+            def test_classmethod_wrapper(cls, value: int):
+                assert value in [1, 2]
+
+            @classmethod
+            @pytest.mark.parametrize("value", [1, 2])
+            def test_classmethod_wrapper_on_top(cls, value: int):
+                assert value in [1, 2]
+
+            @pytest.mark.parametrize("value", [1, 2])
+            @staticmethod
+            def test_staticmethod_wrapper(value: int):
+                assert value in [1, 2]
+
+            @staticmethod
+            @pytest.mark.parametrize("value", [1, 2])
+            def test_staticmethod_wrapper_on_top(value: int):
+                assert value in [1, 2]
+        """
+    )
+    result = pytester.runpytest()
+    result.assert_outcomes(passed=8)