Add extra_test

extra_tests/snippets/code_co_consts.py

@@ -0,0 +1,31 @@
+from asyncio import sleep
+
+def f():
+    def g():
+        return 1
+
+    assert g.__code__.co_consts[0] == None
+    return 2
+
+assert f.__code__.co_consts[0] == None
+
+def generator():
+  yield 1
+  yield 2
+
+assert generator().gi_code.co_consts[0] == None
+
+async def async_f():
+  await sleep(1)
+  return 1
+
+assert async_f.__code__.co_consts[0] == None
+
+lambda_f = lambda: 0
+assert lambda_f.__code__.co_consts[0] == None
+
+class cls:
+    def f():
+        return 1
+
+assert cls().f.__code__.co_consts[0] == None