from test import test_support from test.test_support import bigmemtest, _1G, _2G, _4G, precisionbigmemtest import unittest import operator import string import sys # Bigmem testing houserules: # # - Try not to allocate too many large objects. It's okay to rely on # refcounting semantics, but don't forget that 's = create_largestring()' # doesn't release the old 's' (if it exists) until well after its new # value has been created. Use 'del s' before the create_largestring call. # # - Do *not* compare large objects using assertEquals or similar. It's a # lengty operation and the errormessage will be utterly useless due to # its size. To make sure whether a result has the right contents, better # to use the strip or count methods, or compare meaningful slices. # # - Don't forget to test for large indices, offsets and results and such, # in addition to large sizes. # # - When repeating an object (say, a substring, or a small list) to create # a large object, make the subobject of a length that is not a power of # 2. That way, int-wrapping problems are more easily detected. # # - While the bigmemtest decorator speaks of 'minsize', all tests will # actually be called with a much smaller number too, in the normal # test run (5Kb currently.) This is so the tests themselves get frequent # testing. Consequently, always make all large allocations based on the # passed-in 'size', and don't rely on the size being very large. Also, # memuse-per-size should remain sane (less than a few thousand); if your # test uses more, adjust 'size' upward, instead. class StrTest(unittest.TestCase): @bigmemtest(minsize=_2G, memuse=2) def test_capitalize(self, size): SUBSTR = ' abc def ghi' s = '-' * size + SUBSTR caps = s.capitalize() self.assertEquals(caps[-len(SUBSTR):], SUBSTR.capitalize()) self.assertEquals(caps.lstrip('-'), SUBSTR) @bigmemtest(minsize=_2G + 10, memuse=1) def test_center(self, size): SUBSTR = ' abc def ghi' s = SUBSTR.center(size) self.assertEquals(len(s), size) lpadsize = rpadsize = (len(s) - len(SUBSTR)) // 2 if len(s) % 2: lpadsize += 1 self.assertEquals(s[lpadsize:-rpadsize], SUBSTR) self.assertEquals(s.strip(), SUBSTR.strip()) @precisionbigmemtest(size=_2G - 1, memuse=1) def test_center_unicode(self, size): SUBSTR = u' abc def ghi' try: s = SUBSTR.center(size) except OverflowError: pass # acceptable on 32-bit else: self.assertEquals(len(s), size) lpadsize = rpadsize = (len(s) - len(SUBSTR)) // 2 if len(s) % 2: lpadsize += 1 self.assertEquals(s[lpadsize:-rpadsize], SUBSTR) self.assertEquals(s.strip(), SUBSTR.strip()) del s @bigmemtest(minsize=_2G, memuse=2) def test_count(self, size): SUBSTR = ' abc def ghi' s = '.' * size + SUBSTR self.assertEquals(s.count('.'), size) s += '.' self.assertEquals(s.count('.'), size + 1) self.assertEquals(s.count(' '), 3) self.assertEquals(s.count('i'), 1) self.assertEquals(s.count('j'), 0) @bigmemtest(minsize=_2G + 2, memuse=3) def test_decode(self, size): s = '.' * size self.assertEquals(len(s.decode('utf-8')), size) def basic_encode_test(self, size, enc, c=u'.', expectedsize=None): if expectedsize is None: expectedsize = size s = c * size self.assertEquals(len(s.encode(enc)), expectedsize) @bigmemtest(minsize=_2G + 2, memuse=3) def test_encode(self, size): return self.basic_encode_test(size, 'utf-8') @precisionbigmemtest(size=_4G // 6 + 2, memuse=2) def test_encode_raw_unicode_escape(self, size): try: return self.basic_encode_test(size, 'raw_unicode_escape') except MemoryError: pass # acceptable on 32-bit @precisionbigmemtest(size=_4G // 5 + 70, memuse=3) def test_encode_utf7(self, size): try: return self.basic_encode_test(size, 'utf7') except MemoryError: pass # acceptable on 32-bit @precisionbigmemtest(size=_4G // 4 + 5, memuse=6) def test_encode_utf32(self, size): try: return self.basic_encode_test(size, 'utf32', expectedsize=4*size+4) except MemoryError: pass # acceptable on 32-bit @precisionbigmemtest(size=_2G-1, memuse=2) def test_decodeascii(self, size): return self.basic_encode_test(size, 'ascii', c='A') @precisionbigmemtest(size=_4G // 5, memuse=6+2) def test_unicode_repr_oflw(self, size): try: s = u"\uAAAA"*size r = repr(s) except MemoryError: pass # acceptable on 32-bit else: self.failUnless(s == eval(r)) @bigmemtest(minsize=_2G, memuse=2) def test_endswith(self, size): SUBSTR = ' abc def ghi' s = '-' * size + SUBSTR self.failUnless(s.endswith(SUBSTR)) self.failUnless(s.endswith(s)) s2 = '...' + s self.failUnless(s2.endswith(s)) self.failIf(s.endswith('a' + SUBSTR)) self.failIf(SUBSTR.endswith(s)) @bigmemtest(minsize=_2G + 10, memuse=2) def test_expandtabs(self, size): s = '-' * size tabsize = 8 self.assertEquals(s.expandtabs(), s) del s slen, remainder = divmod(size, tabsize) s = ' \t' * slen s = s.expandtabs(tabsize) self.assertEquals(len(s), size - remainder) self.assertEquals(len(s.strip(' ')), 0) @bigmemtest(minsize=_2G, memuse=2) def test_find(self, size): SUBSTR = ' abc def ghi' sublen = len(SUBSTR) s = ''.join([SUBSTR, '-' * size, SUBSTR]) self.assertEquals(s.find(' '), 0) self.assertEquals(s.find(SUBSTR), 0) self.assertEquals(s.find(' ', sublen), sublen + size) self.assertEquals(s.find(SUBSTR, len(SUBSTR)), sublen + size) self.assertEquals(s.find('i'), SUBSTR.find('i')) self.assertEquals(s.find('i', sublen), sublen + size + SUBSTR.find('i')) self.assertEquals(s.find('i', size), sublen + size + SUBSTR.find('i')) self.assertEquals(s.find('j'), -1) @bigmemtest(minsize=_2G, memuse=2) def test_index(self, size): SUBSTR = ' abc def ghi' sublen = len(SUBSTR) s = ''.join([SUBSTR, '-' * size, SUBSTR]) self.assertEquals(s.index(' '), 0) self.assertEquals(s.index(SUBSTR), 0) self.assertEquals(s.index(' ', sublen), sublen + size) self.assertEquals(s.index(SUBSTR, sublen), sublen + size) self.assertEquals(s.index('i'), SUBSTR.index('i')) self.assertEquals(s.index('i', sublen), sublen + size + SUBSTR.index('i')) self.assertEquals(s.index('i', size), sublen + size + SUBSTR.index('i')) self.assertRaises(ValueError, s.index, 'j') @bigmemtest(minsize=_2G, memuse=2) def test_isalnum(self, size): SUBSTR = '123456' s = 'a' * size + SUBSTR self.failUnless(s.isalnum()) s += '.' self.failIf(s.isalnum()) @bigmemtest(minsize=_2G, memuse=2) def test_isalpha(self, size): SUBSTR = 'zzzzzzz' s = 'a' * size + SUBSTR self.failUnless(s.isalpha()) s += '.' self.failIf(s.isalpha()) @bigmemtest(minsize=_2G, memuse=2) def test_isdigit(self, size): SUBSTR = '123456' s = '9' * size + SUBSTR self.failUnless(s.isdigit()) s += 'z' self.failIf(s.isdigit()) @bigmemtest(minsize=_2G, memuse=2) def test_islower(self, size): chars = ''.join([ chr(c) for c in range(255) if not chr(c).isupper() ]) repeats = size // len(chars) + 2 s = chars * repeats self.failUnless(s.islower()) s += 'A' self.failIf(s.islower()) @bigmemtest(minsize=_2G, memuse=2) def test_isspace(self, size): whitespace = ' \f\n\r\t\v' repeats = size // len(whitespace) + 2 s = whitespace * repeats self.failUnless(s.isspace()) s += 'j' self.failIf(s.isspace()) @bigmemtest(minsize=_2G, memuse=2) def test_istitle(self, size): SUBSTR = '123456' s = ''.join(['A', 'a' * size, SUBSTR]) self.failUnless(s.istitle()) s += 'A' self.failUnless(s.istitle()) s += 'aA' self.failIf(s.istitle()) @bigmemtest(minsize=_2G, memuse=2) def test_isupper(self, size): chars = ''.join([ chr(c) for c in range(255) if not chr(c).islower() ]) repeats = size // len(chars) + 2 s = chars * repeats self.failUnless(s.isupper()) s += 'a' self.failIf(s.isupper()) @bigmemtest(minsize=_2G, memuse=2) def test_join(self, size): s = 'A' * size x = s.join(['aaaaa', 'bbbbb']) self.assertEquals(x.count('a'), 5) self.assertEquals(x.count('b'), 5) self.failUnless(x.startswith('aaaaaA')) self.failUnless(x.endswith('Abbbbb')) @bigmemtest(minsize=_2G + 10, memuse=1) def test_ljust(self, size): SUBSTR = ' abc def ghi' s = SUBSTR.ljust(size) self.failUnless(s.startswith(SUBSTR + ' ')) self.assertEquals(len(s), size) self.assertEquals(s.strip(), SUBSTR.strip()) @bigmemtest(minsize=_2G + 10, memuse=2) def test_lower(self, size): s = 'A' * size s = s.lower() self.assertEquals(len(s), size) self.assertEquals(s.count('a'), size) @bigmemtest(minsize=_2G + 10, memuse=1) def test_lstrip(self, size): SUBSTR = 'abc def ghi' s = SUBSTR.rjust(size) self.assertEquals(len(s), size) self.assertEquals(s.lstrip(), SUBSTR.lstrip()) del s s = SUBSTR.ljust(size) self.assertEquals(len(s), size) stripped = s.lstrip() self.failUnless(stripped is s) @bigmemtest(minsize=_2G + 10, memuse=2) def test_replace(self, size): replacement = 'a' s = ' ' * size s = s.replace(' ', replacement) self.assertEquals(len(s), size) self.assertEquals(s.count(replacement), size) s = s.replace(replacement, ' ', size - 4) self.assertEquals(len(s), size) self.assertEquals(s.count(replacement), 4) self.assertEquals(s[-10:], ' aaaa') @bigmemtest(minsize=_2G, memuse=2) def test_rfind(self, size): SUBSTR = ' abc def ghi' sublen = len(SUBSTR) s = ''.join([SUBSTR, '-' * size, SUBSTR]) self.assertEquals(s.rfind(' '), sublen + size + SUBSTR.rfind(' ')) self.assertEquals(s.rfind(SUBSTR), sublen + size) self.assertEquals(s.rfind(' ', 0, size), SUBSTR.rfind(' ')) self.assertEquals(s.rfind(SUBSTR, 0, sublen + size), 0) self.assertEquals(s.rfind('i'), sublen + size + SUBSTR.rfind('i')) self.assertEquals(s.rfind('i', 0, sublen), SUBSTR.rfind('i')) self.assertEquals(s.rfind('i', 0, sublen + size), SUBSTR.rfind('i')) self.assertEquals(s.rfind('j'), -1) @bigmemtest(minsize=_2G, memuse=2) def test_rindex(self, size): SUBSTR = ' abc def ghi' sublen = len(SUBSTR) s = ''.join([SUBSTR, '-' * size, SUBSTR]) self.assertEquals(s.rindex(' '), sublen + size + SUBSTR.rindex(' ')) self.assertEquals(s.rindex(SUBSTR), sublen + size) self.assertEquals(s.rindex(' ', 0, sublen + size - 1), SUBSTR.rindex(' ')) self.assertEquals(s.rindex(SUBSTR, 0, sublen + size), 0) self.assertEquals(s.rindex('i'), sublen + size + SUBSTR.rindex('i')) self.assertEquals(s.rindex('i', 0, sublen), SUBSTR.rindex('i')) self.assertEquals(s.rindex('i', 0, sublen + size), SUBSTR.rindex('i')) self.assertRaises(ValueError, s.rindex, 'j') @bigmemtest(minsize=_2G + 10, memuse=1) def test_rjust(self, size): SUBSTR = ' abc def ghi' s = SUBSTR.ljust(size) self.failUnless(s.startswith(SUBSTR + ' ')) self.assertEquals(len(s), size) self.assertEquals(s.strip(), SUBSTR.strip()) @bigmemtest(minsize=_2G + 10, memuse=1) def test_rstrip(self, size): SUBSTR = ' abc def ghi' s = SUBSTR.ljust(size) self.assertEquals(len(s), size) self.assertEquals(s.rstrip(), SUBSTR.rstrip()) del s s = SUBSTR.rjust(size) self.assertEquals(len(s), size) stripped = s.rstrip() self.failUnless(stripped is s) # The test takes about size bytes to build a string, and then about # sqrt(size) substrings of sqrt(size) in size and a list to # hold sqrt(size) items. It's close but just over 2x size. @bigmemtest(minsize=_2G, memuse=2.1) def test_split_small(self, size): # Crudely calculate an estimate so that the result of s.split won't # take up an inordinate amount of memory chunksize = int(size ** 0.5 + 2) SUBSTR = 'a' + ' ' * chunksize s = SUBSTR * chunksize l = s.split() self.assertEquals(len(l), chunksize) self.assertEquals(set(l), set(['a'])) del l l = s.split('a') self.assertEquals(len(l), chunksize + 1) self.assertEquals(set(l), set(['', ' ' * chunksize])) # Allocates a string of twice size (and briefly two) and a list of # size. Because of internal affairs, the s.split() call produces a # list of size times the same one-character string, so we only # suffer for the list size. (Otherwise, it'd cost another 48 times # size in bytes!) Nevertheless, a list of size takes # 8*size bytes. @bigmemtest(minsize=_2G + 5, memuse=10) def test_split_large(self, size): s = ' a' * size + ' ' l = s.split() self.assertEquals(len(l), size) self.assertEquals(set(l), set(['a'])) del l l = s.split('a') self.assertEquals(len(l), size + 1) self.assertEquals(set(l), set([' '])) @bigmemtest(minsize=_2G, memuse=2.1) def test_splitlines(self, size): # Crudely calculate an estimate so that the result of s.split won't # take up an inordinate amount of memory chunksize = int(size ** 0.5 + 2) // 2 SUBSTR = ' ' * chunksize + '\n' + ' ' * chunksize + '\r\n' s = SUBSTR * chunksize l = s.splitlines() self.assertEquals(len(l), chunksize * 2) self.assertEquals(set(l), set([' ' * chunksize])) @bigmemtest(minsize=_2G, memuse=2) def test_startswith(self, size): SUBSTR = ' abc def ghi' s = '-' * size + SUBSTR self.failUnless(s.startswith(s)) self.failUnless(s.startswith('-' * size)) self.failIf(s.startswith(SUBSTR)) @bigmemtest(minsize=_2G, memuse=1) def test_strip(self, size): SUBSTR = ' abc def ghi ' s = SUBSTR.rjust(size) self.assertEquals(len(s), size) self.assertEquals(s.strip(), SUBSTR.strip()) del s s = SUBSTR.ljust(size) self.assertEquals(len(s), size) self.assertEquals(s.strip(), SUBSTR.strip()) @bigmemtest(minsize=_2G, memuse=2) def test_swapcase(self, size): SUBSTR = "aBcDeFG12.'\xa9\x00" sublen = len(SUBSTR) repeats = size // sublen + 2 s = SUBSTR * repeats s = s.swapcase() self.assertEquals(len(s), sublen * repeats) self.assertEquals(s[:sublen * 3], SUBSTR.swapcase() * 3) self.assertEquals(s[-sublen * 3:], SUBSTR.swapcase() * 3) @bigmemtest(minsize=_2G, memuse=2) def test_title(self, size): SUBSTR = 'SpaaHAaaAaham' s = SUBSTR * (size // len(SUBSTR) + 2) s = s.title() self.failUnless(s.startswith((SUBSTR * 3).title())) self.failUnless(s.endswith(SUBSTR.lower() * 3)) @bigmemtest(minsize=_2G, memuse=2) def test_translate(self, size): trans = string.maketrans('.aZ', '-!$') SUBSTR = 'aZz.z.Aaz.' sublen = len(SUBSTR) repeats = size // sublen + 2 s = SUBSTR * repeats s = s.translate(trans) self.assertEquals(len(s), repeats * sublen) self.assertEquals(s[:sublen], SUBSTR.translate(trans)) self.assertEquals(s[-sublen:], SUBSTR.translate(trans)) self.assertEquals(s.count('.'), 0) self.assertEquals(s.count('!'), repeats * 2) self.assertEquals(s.count('z'), repeats * 3) @bigmemtest(minsize=_2G + 5, memuse=2) def test_upper(self, size): s = 'a' * size s = s.upper() self.assertEquals(len(s), size) self.assertEquals(s.count('A'), size) @bigmemtest(minsize=_2G + 20, memuse=1) def test_zfill(self, size): SUBSTR = '-568324723598234' s = SUBSTR.zfill(size) self.failUnless(s.endswith('0' + SUBSTR[1:])) self.failUnless(s.startswith('-0')) self.assertEquals(len(s), size) self.assertEquals(s.count('0'), size - len(SUBSTR)) @bigmemtest(minsize=_2G + 10, memuse=2) def test_format(self, size): s = '-' * size sf = '%s' % (s,) self.failUnless(s == sf) del sf sf = '..%s..' % (s,) self.assertEquals(len(sf), len(s) + 4) self.failUnless(sf.startswith('..-')) self.failUnless(sf.endswith('-..')) del s, sf size //= 2 edge = '-' * size s = ''.join([edge, '%s', edge]) del edge s = s % '...' self.assertEquals(len(s), size * 2 + 3) self.assertEquals(s.count('.'), 3) self.assertEquals(s.count('-'), size * 2) @bigmemtest(minsize=_2G + 10, memuse=2) def test_repr_small(self, size): s = '-' * size s = repr(s) self.assertEquals(len(s), size + 2) self.assertEquals(s[0], "'") self.assertEquals(s[-1], "'") self.assertEquals(s.count('-'), size) del s # repr() will create a string four times as large as this 'binary # string', but we don't want to allocate much more than twice # size in total. (We do extra testing in test_repr_large()) size = size // 5 * 2 s = '\x00' * size s = repr(s) self.assertEquals(len(s), size * 4 + 2) self.assertEquals(s[0], "'") self.assertEquals(s[-1], "'") self.assertEquals(s.count('\\'), size) self.assertEquals(s.count('0'), size * 2) @bigmemtest(minsize=_2G + 10, memuse=5) def test_repr_large(self, size): s = '\x00' * size s = repr(s) self.assertEquals(len(s), size * 4 + 2) self.assertEquals(s[0], "'") self.assertEquals(s[-1], "'") self.assertEquals(s.count('\\'), size) self.assertEquals(s.count('0'), size * 2) @bigmemtest(minsize=2**32 // 5, memuse=6+2) def test_unicode_repr(self, size): s = u"\uAAAA" * size self.failUnless(len(repr(s)) > size) # This test is meaningful even with size < 2G, as long as the # doubled string is > 2G (but it tests more if both are > 2G :) @bigmemtest(minsize=_1G + 2, memuse=3) def test_concat(self, size): s = '.' * size self.assertEquals(len(s), size) s = s + s self.assertEquals(len(s), size * 2) self.assertEquals(s.count('.'), size * 2) # This test is meaningful even with size < 2G, as long as the # repeated string is > 2G (but it tests more if both are > 2G :) @bigmemtest(minsize=_1G + 2, memuse=3) def test_repeat(self, size): s = '.' * size self.assertEquals(len(s), size) s = s * 2 self.assertEquals(len(s), size * 2) self.assertEquals(s.count('.'), size * 2) @bigmemtest(minsize=_2G + 20, memuse=1) def test_slice_and_getitem(self, size): SUBSTR = '0123456789' sublen = len(SUBSTR) s = SUBSTR * (size // sublen) stepsize = len(s) // 100 stepsize = stepsize - (stepsize % sublen) for i in range(0, len(s) - stepsize, stepsize): self.assertEquals(s[i], SUBSTR[0]) self.assertEquals(s[i:i + sublen], SUBSTR) self.assertEquals(s[i:i + sublen:2], SUBSTR[::2]) if i > 0: self.assertEquals(s[i + sublen - 1:i - 1:-3], SUBSTR[sublen::-3]) # Make sure we do some slicing and indexing near the end of the # string, too. self.assertEquals(s[len(s) - 1], SUBSTR[-1]) self.assertEquals(s[-1], SUBSTR[-1]) self.assertEquals(s[len(s) - 10], SUBSTR[0]) self.assertEquals(s[-sublen], SUBSTR[0]) self.assertEquals(s[len(s):], '') self.assertEquals(s[len(s) - 1:], SUBSTR[-1]) self.assertEquals(s[-1:], SUBSTR[-1]) self.assertEquals(s[len(s) - sublen:], SUBSTR) self.assertEquals(s[-sublen:], SUBSTR) self.assertEquals(len(s[:]), len(s)) self.assertEquals(len(s[:len(s) - 5]), len(s) - 5) self.assertEquals(len(s[5:-5]), len(s) - 10) self.assertRaises(IndexError, operator.getitem, s, len(s)) self.assertRaises(IndexError, operator.getitem, s, len(s) + 1) self.assertRaises(IndexError, operator.getitem, s, len(s) + 1<<31) @bigmemtest(minsize=_2G, memuse=2) def test_contains(self, size): SUBSTR = '0123456789' edge = '-' * (size // 2) s = ''.join([edge, SUBSTR, edge]) del edge self.failUnless(SUBSTR in s) self.failIf(SUBSTR * 2 in s) self.failUnless('-' in s) self.failIf('a' in s) s += 'a' self.failUnless('a' in s) @bigmemtest(minsize=_2G + 10, memuse=2) def test_compare(self, size): s1 = '-' * size s2 = '-' * size self.failUnless(s1 == s2) del s2 s2 = s1 + 'a' self.failIf(s1 == s2) del s2 s2 = '.' * size self.failIf(s1 == s2) @bigmemtest(minsize=_2G + 10, memuse=1) def test_hash(self, size): # Not sure if we can do any meaningful tests here... Even if we # start relying on the exact algorithm used, the result will be # different depending on the size of the C 'long int'. Even this # test is dodgy (there's no *guarantee* that the two things should # have a different hash, even if they, in the current # implementation, almost always do.) s = '\x00' * size h1 = hash(s) del s s = '\x00' * (size + 1) self.failIf(h1 == hash(s)) class TupleTest(unittest.TestCase): # Tuples have a small, fixed-sized head and an array of pointers to # data. Since we're testing 64-bit addressing, we can assume that the # pointers are 8 bytes, and that thus that the tuples take up 8 bytes # per size. # As a side-effect of testing long tuples, these tests happen to test # having more than 2<<31 references to any given object. Hence the # use of different types of objects as contents in different tests. @bigmemtest(minsize=_2G + 2, memuse=16) def test_compare(self, size): t1 = (u'',) * size t2 = (u'',) * size self.failUnless(t1 == t2) del t2 t2 = (u'',) * (size + 1) self.failIf(t1 == t2) del t2 t2 = (1,) * size self.failIf(t1 == t2) # Test concatenating into a single tuple of more than 2G in length, # and concatenating a tuple of more than 2G in length separately, so # the smaller test still gets run even if there isn't memory for the # larger test (but we still let the tester know the larger test is # skipped, in verbose mode.) def basic_concat_test(self, size): t = ((),) * size self.assertEquals(len(t), size) t = t + t self.assertEquals(len(t), size * 2) @bigmemtest(minsize=_2G // 2 + 2, memuse=24) def test_concat_small(self, size): return self.basic_concat_test(size) @bigmemtest(minsize=_2G + 2, memuse=24) def test_concat_large(self, size): return self.basic_concat_test(size) @bigmemtest(minsize=_2G // 5 + 10, memuse=8 * 5) def test_contains(self, size): t = (1, 2, 3, 4, 5) * size self.assertEquals(len(t), size * 5) self.failUnless(5 in t) self.failIf((1, 2, 3, 4, 5) in t) self.failIf(0 in t) @bigmemtest(minsize=_2G + 10, memuse=8) def test_hash(self, size): t1 = (0,) * size h1 = hash(t1) del t1 t2 = (0,) * (size + 1) self.failIf(h1 == hash(t2)) @bigmemtest(minsize=_2G + 10, memuse=8) def test_index_and_slice(self, size): t = (None,) * size self.assertEquals(len(t), size) self.assertEquals(t[-1], None) self.assertEquals(t[5], None) self.assertEquals(t[size - 1], None) self.assertRaises(IndexError, operator.getitem, t, size) self.assertEquals(t[:5], (None,) * 5) self.assertEquals(t[-5:], (None,) * 5) self.assertEquals(t[20:25], (None,) * 5) self.assertEquals(t[-25:-20], (None,) * 5) self.assertEquals(t[size - 5:], (None,) * 5) self.assertEquals(t[size - 5:size], (None,) * 5) self.assertEquals(t[size - 6:size - 2], (None,) * 4) self.assertEquals(t[size:size], ()) self.assertEquals(t[size:size+5], ()) # Like test_concat, split in two. def basic_test_repeat(self, size): t = ('',) * size self.assertEquals(len(t), size) t = t * 2 self.assertEquals(len(t), size * 2) @bigmemtest(minsize=_2G // 2 + 2, memuse=24) def test_repeat_small(self, size): return self.basic_test_repeat(size) @bigmemtest(minsize=_2G + 2, memuse=24) def test_repeat_large(self, size): return self.basic_test_repeat(size) @bigmemtest(minsize=_1G - 1, memuse=12) def test_repeat_large_2(self, size): return self.basic_test_repeat(size) @precisionbigmemtest(size=_1G - 1, memuse=9) def test_from_2G_generator(self, size): try: t = tuple(xrange(size)) except MemoryError: pass # acceptable on 32-bit else: count = 0 for item in t: self.assertEquals(item, count) count += 1 self.assertEquals(count, size) @precisionbigmemtest(size=_1G - 25, memuse=9) def test_from_almost_2G_generator(self, size): try: t = tuple(xrange(size)) count = 0 for item in t: self.assertEquals(item, count) count += 1 self.assertEquals(count, size) except MemoryError: pass # acceptable, expected on 32-bit # Like test_concat, split in two. def basic_test_repr(self, size): t = (0,) * size s = repr(t) # The repr of a tuple of 0's is exactly three times the tuple length. self.assertEquals(len(s), size * 3) self.assertEquals(s[:5], '(0, 0') self.assertEquals(s[-5:], '0, 0)') self.assertEquals(s.count('0'), size) @bigmemtest(minsize=_2G // 3 + 2, memuse=8 + 3) def test_repr_small(self, size): return self.basic_test_repr(size) @bigmemtest(minsize=_2G + 2, memuse=8 + 3) def test_repr_large(self, size): return self.basic_test_repr(size) class ListTest(unittest.TestCase): # Like tuples, lists have a small, fixed-sized head and an array of # pointers to data, so 8 bytes per size. Also like tuples, we make the # lists hold references to various objects to test their refcount # limits. @bigmemtest(minsize=_2G + 2, memuse=16) def test_compare(self, size): l1 = [u''] * size l2 = [u''] * size self.failUnless(l1 == l2) del l2 l2 = [u''] * (size + 1) self.failIf(l1 == l2) del l2 l2 = [2] * size self.failIf(l1 == l2) # Test concatenating into a single list of more than 2G in length, # and concatenating a list of more than 2G in length separately, so # the smaller test still gets run even if there isn't memory for the # larger test (but we still let the tester know the larger test is # skipped, in verbose mode.) def basic_test_concat(self, size): l = [[]] * size self.assertEquals(len(l), size) l = l + l self.assertEquals(len(l), size * 2) @bigmemtest(minsize=_2G // 2 + 2, memuse=24) def test_concat_small(self, size): return self.basic_test_concat(size) @bigmemtest(minsize=_2G + 2, memuse=24) def test_concat_large(self, size): return self.basic_test_concat(size) def basic_test_inplace_concat(self, size): l = [sys.stdout] * size l += l self.assertEquals(len(l), size * 2) self.failUnless(l[0] is l[-1]) self.failUnless(l[size - 1] is l[size + 1]) @bigmemtest(minsize=_2G // 2 + 2, memuse=24) def test_inplace_concat_small(self, size): return self.basic_test_inplace_concat(size) @bigmemtest(minsize=_2G + 2, memuse=24) def test_inplace_concat_large(self, size): return self.basic_test_inplace_concat(size) @bigmemtest(minsize=_2G // 5 + 10, memuse=8 * 5) def test_contains(self, size): l = [1, 2, 3, 4, 5] * size self.assertEquals(len(l), size * 5) self.failUnless(5 in l) self.failIf([1, 2, 3, 4, 5] in l) self.failIf(0 in l) @bigmemtest(minsize=_2G + 10, memuse=8) def test_hash(self, size): l = [0] * size self.failUnlessRaises(TypeError, hash, l) @bigmemtest(minsize=_2G + 10, memuse=8) def test_index_and_slice(self, size): l = [None] * size self.assertEquals(len(l), size) self.assertEquals(l[-1], None) self.assertEquals(l[5], None) self.assertEquals(l[size - 1], None) self.assertRaises(IndexError, operator.getitem, l, size) self.assertEquals(l[:5], [None] * 5) self.assertEquals(l[-5:], [None] * 5) self.assertEquals(l[20:25], [None] * 5) self.assertEquals(l[-25:-20], [None] * 5) self.assertEquals(l[size - 5:], [None] * 5) self.assertEquals(l[size - 5:size], [None] * 5) self.assertEquals(l[size - 6:size - 2], [None] * 4) self.assertEquals(l[size:size], []) self.assertEquals(l[size:size+5], []) l[size - 2] = 5 self.assertEquals(len(l), size) self.assertEquals(l[-3:], [None, 5, None]) self.assertEquals(l.count(5), 1) self.assertRaises(IndexError, operator.setitem, l, size, 6) self.assertEquals(len(l), size) l[size - 7:] = [1, 2, 3, 4, 5] size -= 2 self.assertEquals(len(l), size) self.assertEquals(l[-7:], [None, None, 1, 2, 3, 4, 5]) l[:7] = [1, 2, 3, 4, 5] size -= 2 self.assertEquals(len(l), size) self.assertEquals(l[:7], [1, 2, 3, 4, 5, None, None]) del l[size - 1] size -= 1 self.assertEquals(len(l), size) self.assertEquals(l[-1], 4) del l[-2:] size -= 2 self.assertEquals(len(l), size) self.assertEquals(l[-1], 2) del l[0] size -= 1 self.assertEquals(len(l), size) self.assertEquals(l[0], 2) del l[:2] size -= 2 self.assertEquals(len(l), size) self.assertEquals(l[0], 4) # Like test_concat, split in two. def basic_test_repeat(self, size): l = [] * size self.failIf(l) l = [''] * size self.assertEquals(len(l), size) l = l * 2 self.assertEquals(len(l), size * 2) @bigmemtest(minsize=_2G // 2 + 2, memuse=24) def test_repeat_small(self, size): return self.basic_test_repeat(size) @bigmemtest(minsize=_2G + 2, memuse=24) def test_repeat_large(self, size): return self.basic_test_repeat(size) def basic_test_inplace_repeat(self, size): l = [''] l *= size self.assertEquals(len(l), size) self.failUnless(l[0] is l[-1]) del l l = [''] * size l *= 2 self.assertEquals(len(l), size * 2) self.failUnless(l[size - 1] is l[-1]) @bigmemtest(minsize=_2G // 2 + 2, memuse=16) def test_inplace_repeat_small(self, size): return self.basic_test_inplace_repeat(size) @bigmemtest(minsize=_2G + 2, memuse=16) def test_inplace_repeat_large(self, size): return self.basic_test_inplace_repeat(size) def basic_test_repr(self, size): l = [0] * size s = repr(l) # The repr of a list of 0's is exactly three times the list length. self.assertEquals(len(s), size * 3) self.assertEquals(s[:5], '[0, 0') self.assertEquals(s[-5:], '0, 0]') self.assertEquals(s.count('0'), size) @bigmemtest(minsize=_2G // 3 + 2, memuse=8 + 3) def test_repr_small(self, size): return self.basic_test_repr(size) @bigmemtest(minsize=_2G + 2, memuse=8 + 3) def test_repr_large(self, size): return self.basic_test_repr(size) # list overallocates ~1/8th of the total size (on first expansion) so # the single list.append call puts memuse at 9 bytes per size. @bigmemtest(minsize=_2G, memuse=9) def test_append(self, size): l = [object()] * size l.append(object()) self.assertEquals(len(l), size+1) self.failUnless(l[-3] is l[-2]) self.failIf(l[-2] is l[-1]) @bigmemtest(minsize=_2G // 5 + 2, memuse=8 * 5) def test_count(self, size): l = [1, 2, 3, 4, 5] * size self.assertEquals(l.count(1), size) self.assertEquals(l.count("1"), 0) def basic_test_extend(self, size): l = [file] * size l.extend(l) self.assertEquals(len(l), size * 2) self.failUnless(l[0] is l[-1]) self.failUnless(l[size - 1] is l[size + 1]) @bigmemtest(minsize=_2G // 2 + 2, memuse=16) def test_extend_small(self, size): return self.basic_test_extend(size) @bigmemtest(minsize=_2G + 2, memuse=16) def test_extend_large(self, size): return self.basic_test_extend(size) @bigmemtest(minsize=_2G // 5 + 2, memuse=8 * 5) def test_index(self, size): l = [1L, 2L, 3L, 4L, 5L] * size size *= 5 self.assertEquals(l.index(1), 0) self.assertEquals(l.index(5, size - 5), size - 1) self.assertEquals(l.index(5, size - 5, size), size - 1) self.assertRaises(ValueError, l.index, 1, size - 4, size) self.assertRaises(ValueError, l.index, 6L) # This tests suffers from overallocation, just like test_append. @bigmemtest(minsize=_2G + 10, memuse=9) def test_insert(self, size): l = [1.0] * size l.insert(size - 1, "A") size += 1 self.assertEquals(len(l), size) self.assertEquals(l[-3:], [1.0, "A", 1.0]) l.insert(size + 1, "B") size += 1 self.assertEquals(len(l), size) self.assertEquals(l[-3:], ["A", 1.0, "B"]) l.insert(1, "C") size += 1 self.assertEquals(len(l), size) self.assertEquals(l[:3], [1.0, "C", 1.0]) self.assertEquals(l[size - 3:], ["A", 1.0, "B"]) @bigmemtest(minsize=_2G // 5 + 4, memuse=8 * 5) def test_pop(self, size): l = [u"a", u"b", u"c", u"d", u"e"] * size size *= 5 self.assertEquals(len(l), size) item = l.pop() size -= 1 self.assertEquals(len(l), size) self.assertEquals(item, u"e") self.assertEquals(l[-2:], [u"c", u"d"]) item = l.pop(0) size -= 1 self.assertEquals(len(l), size) self.assertEquals(item, u"a") self.assertEquals(l[:2], [u"b", u"c"]) item = l.pop(size - 2) size -= 1 self.assertEquals(len(l), size) self.assertEquals(item, u"c") self.assertEquals(l[-2:], [u"b", u"d"]) @bigmemtest(minsize=_2G + 10, memuse=8) def test_remove(self, size): l = [10] * size self.assertEquals(len(l), size) l.remove(10) size -= 1 self.assertEquals(len(l), size) # Because of the earlier l.remove(), this append doesn't trigger # a resize. l.append(5) size += 1 self.assertEquals(len(l), size) self.assertEquals(l[-2:], [10, 5]) l.remove(5) size -= 1 self.assertEquals(len(l), size) self.assertEquals(l[-2:], [10, 10]) @bigmemtest(minsize=_2G // 5 + 2, memuse=8 * 5) def test_reverse(self, size): l = [1, 2, 3, 4, 5] * size l.reverse() self.assertEquals(len(l), size * 5) self.assertEquals(l[-5:], [5, 4, 3, 2, 1]) self.assertEquals(l[:5], [5, 4, 3, 2, 1]) @bigmemtest(minsize=_2G // 5 + 2, memuse=8 * 5) def test_sort(self, size): l = [1, 2, 3, 4, 5] * size l.sort() self.assertEquals(len(l), size * 5) self.assertEquals(l.count(1), size) self.assertEquals(l[:10], [1] * 10) self.assertEquals(l[-10:], [5] * 10) class BufferTest(unittest.TestCase): @precisionbigmemtest(size=_1G, memuse=4) def test_repeat(self, size): try: with test_support._check_py3k_warnings(): b = buffer("AAAA")*size except MemoryError: pass # acceptable on 32-bit else: count = 0 for c in b: self.assertEquals(c, 'A') count += 1 self.assertEquals(count, size*4) def test_main(): test_support.run_unittest(StrTest, TupleTest, ListTest, BufferTest) if __name__ == '__main__': if len(sys.argv) > 1: test_support.set_memlimit(sys.argv[1]) test_main()