From bf19541f466fe40176c80ccfe324ef13c96bf957 Mon Sep 17 00:00:00 2001
From: stijn <stinos@zoho.com>
Date: Fri, 16 Jan 2015 13:36:18 +0100
Subject: py: Prevent segfault for operations on closed StringIO.

Addresses issue #1067.
---
 tests/io/stringio1.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'tests')

diff --git a/tests/io/stringio1.py b/tests/io/stringio1.py
index 6979fe7c9..dae0187f8 100644
--- a/tests/io/stringio1.py
+++ b/tests/io/stringio1.py
@@ -28,3 +28,14 @@ print(a.getvalue())
 a = io.StringIO()
 a.write("foo")
 print(a.read())
+
+a = io.StringIO()
+a.close()
+for f in [a.read, a.getvalue, lambda:a.write("")]:
+    # CPython throws for operations on closed I/O, micropython makes
+    # the underlying string empty unless MICROPY_CPYTHON_COMPAT defined
+    try:
+        f()
+        print("ValueError")
+    except ValueError:
+        print("ValueError")
-- 
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