[3.11] gh-94808: Cover PyEval_GetFuncName (GH-98246). (#98283)

(cherry picked from commit f01b56c7bd)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

Lib/test/test_capi.py

@@ -724,6 +724,21 @@ class CAPITest(unittest.TestCase):
             with self.subTest(name=name):
                 self.assertTrue(hasattr(ctypes.pythonapi, name))
 
+    def test_eval_get_func_name(self):
+        def function_example(): ...
+
+        class A:
+            def method_example(self): ...
+
+        self.assertEqual(_testcapi.eval_get_func_name(function_example),
+                         "function_example")
+        self.assertEqual(_testcapi.eval_get_func_name(A.method_example),
+                         "method_example")
+        self.assertEqual(_testcapi.eval_get_func_name(A().method_example),
+                         "method_example")
+        self.assertEqual(_testcapi.eval_get_func_name(sum), "sum")  # c function
+        self.assertEqual(_testcapi.eval_get_func_name(A), "type")
+
 
 class TestPendingCalls(unittest.TestCase):
 

Modules/_testcapimodule.c

@@ -5935,6 +5935,12 @@ frame_getlasti(PyObject *self, PyObject *frame)
     return PyLong_FromLong(lasti);
 }
 
+static PyObject *
+eval_get_func_name(PyObject *self, PyObject *func)
+{
+    return PyUnicode_FromString(PyEval_GetFuncName(func));
+}
+
 static PyObject *
 get_feature_macros(PyObject *self, PyObject *Py_UNUSED(args))
 {
@@ -6372,6 +6378,7 @@ static PyMethodDef TestMethods[] = {
     {"frame_getgenerator", frame_getgenerator, METH_O, NULL},
     {"frame_getbuiltins", frame_getbuiltins, METH_O, NULL},
     {"frame_getlasti", frame_getlasti, METH_O, NULL},
+    {"eval_get_func_name", eval_get_func_name, METH_O, NULL},
     {"get_feature_macros", get_feature_macros, METH_NOARGS, NULL},
     {"test_code_api", test_code_api, METH_NOARGS, NULL},
     {"settrace_to_record", settrace_to_record, METH_O, NULL},