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Trent Mick <trentm@activestate.com>:

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Testing: test_array.py was also extended to check that one can set the
full range of values for each of the integral signed and unsigned
array types.

This closes SourceForge patch #100506.
This commit is contained in:
Fred Drake 2000-06-28 17:50:51 +00:00
parent 541dc3b7b2
commit 7833447f8f
1 changed files with 54 additions and 2 deletions
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56
Lib/test/test_array.py
View file

@ -15,6 +15,44 @@ def main():
unlink(TESTFN)
def testoverflow(type, lowerLimit, upperLimit):
# should not overflow assigning lower limit
if verbose:
print "overflow test: array(%s, [%s])" % (`type`, `lowerLimit`)
try:
a = array.array(type, [lowerLimit])
except:
raise TestFailed, "array(%s) overflowed assigning %s" %\
(`type`, `lowerLimit`)
# should overflow assigning less than lower limit
if verbose:
print "overflow test: array(%s, [%s])" % (`type`, `lowerLimit-1`)
try:
a = array.array(type, [lowerLimit-1])
raise TestFailed, "array(%s) did not overflow assigning %s" %\
(`type`, `lowerLimit-1`)
except OverflowError:
pass
# should not overflow assigning upper limit
if verbose:
print "overflow test: array(%s, [%s])" % (`type`, `upperLimit`)
try:
a = array.array(type, [upperLimit])
except:
raise TestFailed, "array(%s) overflowed assigning %s" %\
(`type`, `upperLimit`)
# should overflow assigning more than upper limit
if verbose:
print "overflow test: array(%s, [%s])" % (`type`, `upperLimit+1`)
try:
a = array.array(type, [upperLimit+1])
raise TestFailed, "array(%s) did not overflow assigning %s" %\
(`type`, `upperLimit+1`)
except OverflowError:
pass
def testtype(type, example):
a = array.array(type)
@ -81,6 +119,20 @@ def testtype(type, example):
if a != array.array(type, [1, 1, 2, 3, 4, 5, 5]):
raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
# test that overflow exceptions are raised as expected for assignment
# to array of specific integral types
from math import pow
if type in ('b', 'h', 'i', 'l'):
# check signed and unsigned versions
a = array.array(type)
signedLowerLimit = -1 * long(pow(2, a.itemsize * 8 - 1))
signedUpperLimit = long(pow(2, a.itemsize * 8 - 1)) - 1L
unsignedLowerLimit = 0
unsignedUpperLimit = long(pow(2, a.itemsize * 8)) - 1L
testoverflow(type, signedLowerLimit, signedUpperLimit)
testoverflow(type.upper(), unsignedLowerLimit, unsignedUpperLimit)
main()