1 files changed, 29 insertions, 0 deletions
diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py
new file mode 100644
index 0000000000..3bede88bf9
--- /dev/null
+++ b/Lib/test/test_buffer.py
@@ -0,0 +1,29 @@
+"""Unit tests for buffer objects.
+
+For now, tests just new or changed functionality.
+
+"""
+
+import unittest
+from test import test_support
+
+class BufferTests(unittest.TestCase):
+
+    def test_extended_getslice(self):
+        # Test extended slicing by comparing with list slicing.
+        s = "".join(chr(c) for c in list(range(255, -1, -1)))
+        b = buffer(s)
+        indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
+        for start in indices:
+            for stop in indices:
+                # Skip step 0 (invalid)
+                for step in indices[1:]:
+                    self.assertEqual(b[start:stop:step],
+                                     s[start:stop:step])
+
+
+def test_main():
+    test_support.run_unittest(BufferTests)
+
+if __name__ == "__main__":
+    test_main()