From cf70ea633f24c8318e25891c45efd7710466eacb Mon Sep 17 00:00:00 2001
From: "Andrew M. Kuchling" <amk@amk.ca>
Date: Sun, 18 Jun 2000 04:47:08 +0000
Subject: [PATCH] Additional tests for seek() method, written by Trent Mick

---
 Lib/test/output/test_mmap | Bin 346 -> 520 bytes
 Lib/test/test_mmap.py     |  37 ++++++++++++++++++++++++++++++++++++-
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/Lib/test/output/test_mmap b/Lib/test/output/test_mmap
index f3efcd06966dc024a1f97b4c8dfcd5377bd002ba..0e880e38cdf27398f248e705ef8d7f298bb07d11 100644
GIT binary patch
delta 195
zcmcb`)WNdBkFj1MI5jm}p(J0SDzzxTBts#ovLuyD0WNA{l$U}omXlaq0uu`<ssw2+
zh8mKWnx0saS(d6$kYAixl9`{Ur>6%r4OvxEYGppq%v2!GPgAhY%}p%8R0K2<yHO#j
NK)VYPi;GiJxB$T>K(_z@

delta 20
bcmeBRxy7`>kC7)NwYWr~AhEbOHH8ZRN9_i_

diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index e5da187e0c..c3cafca834 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -58,7 +58,42 @@ def test_both():
         
         assert start == PAGESIZE
         assert end == PAGESIZE + 6
-        
+
+    # test seeking around (try to overflow the seek implementation)
+    m.seek(0,0)
+    print '  Seek to zeroth byte'
+    assert m.tell() == 0
+    m.seek(42,1)
+    print '  Seek to 42nd byte'
+    assert m.tell() == 42
+    m.seek(0,2)
+    print '  Seek to last byte'
+    assert m.tell() == len(m)
+	
+    print '  Try to seek to negative position...'
+    try:
+        m.seek(-1)
+    except ValueError:
+        pass
+    else:
+        assert 0, 'expected a ValueError but did not get it'
+
+    print '  Try to seek beyond end of mmap...'
+    try:
+        m.seek(1,2)
+    except ValueError:
+        pass
+    else:
+        assert 0, 'expected a ValueError but did not get it'
+
+    print '  Try to seek to negative position...'
+    try:
+        m.seek(-len(m)-1,2)
+    except ValueError:
+        pass
+    else:
+        assert 0, 'expected a ValueError but did not get it'
+
     m.close()
     os.unlink("foo")
     print ' Test passed'
-- 
2.40.0