From 411dfd871c25355def5599319a45c906f9121282 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 7 Nov 2015 16:54:48 +0200
Subject: [PATCH] Issue #22643: Skip test_case_operation_overflow on computers
 with low memory.

---
 Lib/test/test_unicode.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 2cc1d7c3ff9..d6644657bab 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -820,7 +820,15 @@ class UnicodeTest(string_tests.CommonTest,
     @support.cpython_only
     def test_case_operation_overflow(self):
         # Issue #22643
-        self.assertRaises(OverflowError, ("ü"*(2**32//12 + 1)).upper)
+        size = 2**32//12 + 1
+        try:
+            s = "ü" * size
+        except MemoryError:
+            self.skipTest('no enough memory (%.0f MiB required)' % (size / 2**20))
+        try:
+            self.assertRaises(OverflowError, s.upper)
+        finally:
+            del s
 
     def test_contains(self):
         # Testing Unicode contains method