From e089c688717fbc7c208ad30ee885dcd93a4de678 Mon Sep 17 00:00:00 2001 From: Tim Peters Date: Tue, 10 Apr 2001 03:41:41 +0000 Subject: Test full range of native ints. This exposes two more binary pickle bugs on sizeof(long)==8 machines. pickle.py has no idea what it's doing with very large ints, and variously gets things right by accident, computes nonsense, or generates corrupt pickles. cPickle fails on cases 2**31 <= i < 2**32: since it *thinks* those are 4-byte ints (the "high 4 bytes" are all zeroes), it stores them in the (signed!) BININT format, so they get unpickled as negative values. --- Lib/test/pickletester.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py index 54a43b2..8014efe 100644 --- a/Lib/test/pickletester.py +++ b/Lib/test/pickletester.py @@ -1,5 +1,8 @@ # test_pickle and test_cpickle both use this. +from test_support import TestFailed +import sys + # break into multiple strings to please font-lock-mode DATA = """(lp1 I0 @@ -197,3 +200,19 @@ def dotest(pickle): else: if u2 != u: print "Endcase failure: %s => %s" % (`u`, `u2`) + + # Test the full range of Python ints. + n = sys.maxint + while n: + for expected in (-n, n): + for binary_mode in (0, 1): + s = pickle.dumps(expected, binary_mode) + got = pickle.loads(s) + if expected != got: + raise TestFailed("for %s-mode pickle of %d, pickle " + "string is %s, loaded back as %s" % ( + binary_mode and "binary" or "text", + expected, + repr(s), + got)) + n = n >> 1 -- cgit v0.12