[Python-checkins] CVS: python/dist/src/Lib/test test_marshal.py,NONE,1.1

2001年8月28日 19:28:43 -0700

Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv27201/Lib/test
Added Files:
	test_marshal.py 
Log Message:
marshal.c r_long64: When reading a TYPE_INT64 value on a box with 32-bit
ints, convert to PyLong (rather than throwing away the high-order 32 bits).
--- NEW FILE: test_marshal.py ---
from test_support import TestFailed
import marshal
import sys
# XXX Much more needed here.
# Test the full range of Python ints.
n = sys.maxint
while n:
 for expected in (-n, n):
 s = marshal.dumps(expected)
 got = marshal.loads(s)
 if expected != got:
 raise TestFailed("for int %d, marshal string is %r, loaded "
 "back as %d" % (expected, s, got))
 n = n >> 1
# Simulate int marshaling on a 64-bit box. This is most interesting if
# we're running the test on a 32-bit box, of course.
def to_little_endian_string(value, nbytes):
 bytes = []
 for i in range(nbytes):
 bytes.append(chr(value & 0xff))
 value >>= 8
 return ''.join(bytes)
maxint64 = (1L << 63) - 1
minint64 = -maxint64-1
for base in maxint64, minint64, -maxint64, -(minint64 >> 1):
 while base:
 s = 'I' + to_little_endian_string(base, 8)
 got = marshal.loads(s)
 if base != got:
 raise TestFailed("for int %d, simulated marshal string is %r, "
 "loaded back as %d" % (base, s, got))
 if base == -1: # a fixed-point for shifting right 1
 base = 0
 else:
 base >>= 1