mirror of https://github.com/python/cpython
42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
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from test_support import TestFailed
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import marshal
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import sys
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# XXX Much more needed here.
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# Test the full range of Python ints.
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n = sys.maxint
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while n:
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for expected in (-n, n):
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s = marshal.dumps(expected)
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got = marshal.loads(s)
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if expected != got:
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raise TestFailed("for int %d, marshal string is %r, loaded "
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"back as %d" % (expected, s, got))
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n = n >> 1
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# Simulate int marshaling on a 64-bit box. This is most interesting if
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# we're running the test on a 32-bit box, of course.
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def to_little_endian_string(value, nbytes):
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bytes = []
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for i in range(nbytes):
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bytes.append(chr(value & 0xff))
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value >>= 8
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return ''.join(bytes)
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maxint64 = (1L << 63) - 1
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minint64 = -maxint64-1
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for base in maxint64, minint64, -maxint64, -(minint64 >> 1):
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while base:
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s = 'I' + to_little_endian_string(base, 8)
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got = marshal.loads(s)
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if base != got:
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raise TestFailed("for int %d, simulated marshal string is %r, "
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"loaded back as %d" % (base, s, got))
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if base == -1: # a fixed-point for shifting right 1
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base = 0
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else:
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base >>= 1
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