From 8f22d10a145ba8ad8f995c1ac8d869471ce379d3 Mon Sep 17 00:00:00 2001
From: scalexm <alexandre@scalexm.fr>
Date: Wed, 6 May 2020 20:11:29 +0200
Subject: [PATCH] Add a test showing that class attrs are immutable

---
 tests/test_class_attributes.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/test_class_attributes.rs b/tests/test_class_attributes.rs
index c5a36a2e..ab679c02 100644
--- a/tests/test_class_attributes.rs
+++ b/tests/test_class_attributes.rs
@@ -27,3 +27,11 @@ fn class_attributes() {
     py_assert!(py, foo_obj, "foo_obj.a == 5");
     py_assert!(py, foo_obj, "foo_obj.B == 'bar'");
 }
+
+#[test]
+fn class_attributes_are_immutable() {
+    let gil = Python::acquire_gil();
+    let py = gil.python();
+    let foo_obj = py.get_type::<Foo>();
+    py_expect_exception!(py, foo_obj, "foo_obj.a = 6", TypeError);
+}