1 files changed, 35 insertions, 2 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 1953f29626e..db823ff9c07 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -3,7 +3,7 @@
 import test.test_support, unittest
 from test.test_support import fcmp, have_unicode, TESTFN, unlink
 
-import sys, warnings, cStringIO
+import sys, warnings, cStringIO, random
 warnings.filterwarnings("ignore", "hex../oct.. of negative int",
                         FutureWarning, __name__)
 warnings.filterwarnings("ignore", "integer argument expected",
@@ -1153,8 +1153,41 @@ class BuiltinTest(unittest.TestCase):
                     return i
         self.assertRaises(ValueError, zip, BadSeq(), BadSeq())
 
+class TestSorted(unittest.TestCase):
+
+    def test_basic(self):
+        data = range(100)
+        copy = data[:]
+        random.shuffle(copy)
+        self.assertEqual(data, sorted(copy))
+        self.assertNotEqual(data, copy)
+
+        data.reverse()
+        random.shuffle(copy)
+        self.assertEqual(data, sorted(copy, cmp=lambda x, y: cmp(y,x)))
+        self.assertNotEqual(data, copy)
+        random.shuffle(copy)
+        self.assertEqual(data, sorted(copy, key=lambda x: -x))
+        self.assertNotEqual(data, copy)
+        random.shuffle(copy)
+        self.assertEqual(data, sorted(copy, reverse=1))
+        self.assertNotEqual(data, copy)
+
+    def test_inputtypes(self):
+        s = 'abracadabra'
+        for T in [unicode, list, tuple]:
+            self.assertEqual(sorted(s), sorted(T(s)))
+
+        s = ''.join(dict.fromkeys(s).keys())  # unique letters only
+        for T in [unicode, set, frozenset, list, tuple, dict.fromkeys]:
+            self.assertEqual(sorted(s), sorted(T(s)))
+
+    def test_baddecorator(self):
+        data = 'The quick Brown fox Jumped over The lazy Dog'.split()
+        self.assertRaises(TypeError, sorted, data, None, lambda x,y: 0)
+
 def test_main():
-    test.test_support.run_unittest(BuiltinTest)
+    test.test_support.run_unittest(BuiltinTest, TestSorted)
 
 if __name__ == "__main__":
     test_main()