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#! /usr/bin/env python
"""Test the arraymodule.
Roger E. Masse
"""
import array
from test_support import verbose, TESTFN, unlink, TestFailed
def main():
testtype('c', 'c')
testtype('u', u'\u263a')
for type in (['b', 'h', 'i', 'l', 'f', 'd']):
testtype(type, 1)
testunicode()
testsubclassing()
unlink(TESTFN)
def testunicode():
try:
array.array('b', u'foo')
except TypeError:
pass
else:
raise TestFailed("creating a non-unicode array from "
"a Unicode string should fail")
x = array.array('u', u'\xa0\xc2\u1234')
x.fromunicode(u' ')
x.fromunicode(u'')
x.fromunicode(u'')
x.fromunicode(u'\x11abc\xff\u1234')
s = x.tounicode()
if s != u'\xa0\xc2\u1234 \x11abc\xff\u1234':
raise TestFailed("fromunicode()/tounicode()")
s = u'\x00="\'a\\b\x80\xff\u0000\u0001\u1234'
a = array.array('u', s)
if verbose:
print "repr of type 'u' array:", repr(a)
print " expected: array('u', %r)" % s
def testsubclassing():
class EditableString(array.array):
def __new__(cls, s, *args, **kwargs):
return array.array.__new__(cls, 'c', s)
def __init__(self, s, color='blue'):
array.array.__init__(self, 'c', s)
self.color = color
def strip(self):
self[:] = array.array('c', self.tostring().strip())
def __repr__(self):
return 'EditableString(%r)' % self.tostring()
s = EditableString("\ttest\r\n")
s.strip()
if s.tostring() != 'test':
raise TestFailed, "subclassing array.array failed somewhere"
if s.color != 'blue':
raise TestFailed, "assigning attributes to instance of array subclass"
s.color = 'red'
if s.color != 'red':
raise TestFailed, "assigning attributes to instance of array subclass"
if s.__dict__.keys() != ['color']:
raise TestFailed, "array subclass __dict__"
class ExaggeratingArray(array.array):
__slots__ = ['offset']
def __new__(cls, typecode, data, offset):
return array.array.__new__(cls, typecode, data)
def __init__(self, typecode, data, offset):
self.offset = offset
def __getitem__(self, i):
return array.array.__getitem__(self, i) + self.offset
a = ExaggeratingArray('i', [3, 6, 7, 11], 4)
if a[0] != 7:
raise TestFailed, "array subclass overriding __getitem__"
try:
a.color = 'blue'
except AttributeError:
pass
else:
raise TestFailed, "array subclass __slots__ was ignored"
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)
a.append(example)
if verbose:
print 40*'*'
print 'array after append: ', a
a.typecode
a.itemsize
if a.typecode in ('i', 'b', 'h', 'l'):
a.byteswap()
if a.typecode == 'c':
f = open(TESTFN, "w")
f.write("The quick brown fox jumps over the lazy dog.\n")
f.close()
f = open(TESTFN, 'r')
a.fromfile(f, 10)
f.close()
if verbose:
print 'char array with 10 bytes of TESTFN appended: ', a
a.fromlist(['a', 'b', 'c'])
if verbose:
print 'char array with list appended: ', a
a.insert(0, example)
if verbose:
print 'array of %s after inserting another:' % a.typecode, a
f = open(TESTFN, 'w')
a.tofile(f)
f.close()
# This block is just to verify that the operations don't blow up.
a.tolist()
a.tostring()
repr(a)
str(a)
if verbose:
print 'array of %s converted to a list: ' % a.typecode, a.tolist()
if verbose:
print 'array of %s converted to a string: ' \
% a.typecode, `a.tostring()`
# Try out inplace addition and multiplication
a = array.array(type, [example])
b = a
a += array.array(type, [example]*2)
if a is not b:
raise TestFailed, "array(%s) inplace addition" % `type`
if a != array.array(type, [example] * 3):
raise TestFailed, "array(%s) inplace addition" % `type`
a *= 5
if a is not b:
raise TestFailed, "array(%s) inplace multiplication" % `type`
if a != array.array(type, [example] * 15):
raise TestFailed, "array(%s) inplace multiplication" % `type`
a *= 0
if a is not b:
raise TestFailed, "array(%s) inplace multiplication by 0" % `type`
if a != array.array(type, []):
raise TestFailed, "array(%s) inplace multiplication by 0" % `type`
a *= 1000
if a is not b:
raise TestFailed, "empty array(%s) inplace multiplication" % `type`
if a != array.array(type, []):
raise TestFailed, "empty array(%s) inplace multiplication" % `type`
if type == 'c':
a = array.array(type, "abcde")
a[:-1] = a
if a != array.array(type, "abcdee"):
raise TestFailed, "array(%s) self-slice-assign (head)" % `type`
a = array.array(type, "abcde")
a[1:] = a
if a != array.array(type, "aabcde"):
raise TestFailed, "array(%s) self-slice-assign (tail)" % `type`
a = array.array(type, "abcde")
a[1:-1] = a
if a != array.array(type, "aabcdee"):
raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
if a.index("e") != 5:
raise TestFailed, "array(%s) index-test" % `type`
if a.count("a") != 2:
raise TestFailed, "array(%s) count-test" % `type`
a.remove("e")
if a != array.array(type, "aabcde"):
raise TestFailed, "array(%s) remove-test" % `type`
if a.pop(0) != "a":
raise TestFailed, "array(%s) pop-test" % `type`
if a.pop(1) != "b":
raise TestFailed, "array(%s) pop-test" % `type`
a.extend(array.array(type, "xyz"))
if a != array.array(type, "acdexyz"):
raise TestFailed, "array(%s) extend-test" % `type`
a.pop()
a.pop()
a.pop()
x = a.pop()
if x != 'e':
raise TestFailed, "array(%s) pop-test" % `type`
if a != array.array(type, "acd"):
raise TestFailed, "array(%s) pop-test" % `type`
a.reverse()
if a != array.array(type, "dca"):
raise TestFailed, "array(%s) reverse-test" % `type`
elif type == 'u':
a = array.array(type, u"abcde")
a[:-1] = a
if a != array.array(type, u"abcdee"):
raise TestFailed, "array(%s) self-slice-assign (head)" % `type`
a = array.array(type, u"abcde")
a[1:] = a
if a != array.array(type, u"aabcde"):
raise TestFailed, "array(%s) self-slice-assign (tail)" % `type`
a = array.array(type, u"abcde")
a[1:-1] = a
if a != array.array(type, u"aabcdee"):
raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
if a.index(u"e") != 5:
raise TestFailed, "array(%s) index-test" % `type`
if a.count(u"a") != 2:
raise TestFailed, "array(%s) count-test" % `type`
a.remove(u"e")
if a != array.array(type, u"aabcde"):
raise TestFailed, "array(%s) remove-test" % `type`
if a.pop(0) != u"a":
raise TestFailed, "array(%s) pop-test" % `type`
if a.pop(1) != u"b":
raise TestFailed, "array(%s) pop-test" % `type`
a.extend(array.array(type, u"xyz"))
if a != array.array(type, u"acdexyz"):
raise TestFailed, "array(%s) extend-test" % `type`
a.pop()
a.pop()
a.pop()
x = a.pop()
if x != u'e':
raise TestFailed, "array(%s) pop-test" % `type`
if a != array.array(type, u"acd"):
raise TestFailed, "array(%s) pop-test" % `type`
a.reverse()
if a != array.array(type, u"dca"):
raise TestFailed, "array(%s) reverse-test" % `type`
else:
a = array.array(type, [1, 2, 3, 4, 5])
a[:-1] = a
if a != array.array(type, [1, 2, 3, 4, 5, 5]):
raise TestFailed, "array(%s) self-slice-assign (head)" % `type`
a = array.array(type, [1, 2, 3, 4, 5])
a[1:] = a
if a != array.array(type, [1, 1, 2, 3, 4, 5]):
raise TestFailed, "array(%s) self-slice-assign (tail)" % `type`
a = array.array(type, [1, 2, 3, 4, 5])
a[1:-1] = a
if a != array.array(type, [1, 1, 2, 3, 4, 5, 5]):
raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
if a.index(5) != 5:
raise TestFailed, "array(%s) index-test" % `type`
if a.count(1) != 2:
raise TestFailed, "array(%s) count-test" % `type`
a.remove(5)
if a != array.array(type, [1, 1, 2, 3, 4, 5]):
raise TestFailed, "array(%s) remove-test" % `type`
if a.pop(0) != 1:
raise TestFailed, "array(%s) pop-test" % `type`
if a.pop(1) != 2:
raise TestFailed, "array(%s) pop-test" % `type`
a.extend(array.array(type, [7, 8, 9]))
if a != array.array(type, [1, 3, 4, 5, 7, 8, 9]):
raise TestFailed, "array(%s) extend-test" % `type`
a.pop()
a.pop()
a.pop()
x = a.pop()
if x != 5:
raise TestFailed, "array(%s) pop-test" % `type`
if a != array.array(type, [1, 3, 4]):
raise TestFailed, "array(%s) pop-test" % `type`
a.reverse()
if a != array.array(type, [4, 3, 1]):
raise TestFailed, "array(%s) reverse-test" % `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()
|
