1 files changed, 15 insertions, 0 deletions
diff --git a/Lib/test/test__interpreters.py b/Lib/test/test__interpreters.py
index ad3ebbfdff6..a32d5d81d2b 100644
--- a/Lib/test/test__interpreters.py
+++ b/Lib/test/test__interpreters.py
@@ -485,6 +485,21 @@ class CommonTests(TestBase):
         msg = r'_interpreters.run_func\(\) argument 3 must be dict, not int'
         with self.assertRaisesRegex(TypeError, msg):
             _interpreters.run_func(self.id, lambda: None, shared=1)
+        # See https://github.com/python/cpython/issues/135855
+        msg = r'_interpreters.set___main___attrs\(\) argument 2 must be dict, not int'
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.set___main___attrs(self.id, 1)
+
+    def test_invalid_shared_none(self):
+        msg = r'must be dict, not None'
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.exec(self.id, 'a', shared=None)
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.run_string(self.id, 'a', shared=None)
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.run_func(self.id, lambda: None, shared=None)
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.set___main___attrs(self.id, None)
 
     def test_invalid_shared_encoding(self):
         # See https://github.com/python/cpython/issues/127196