| 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 assertEqual 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.assertEqual(caps[-len(SUBSTR):], |
| SUBSTR.capitalize()) |
| self.assertEqual(caps.lstrip('-'), SUBSTR) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=1) |
| def test_center(self, size): |
| SUBSTR = ' abc def ghi' |
| s = SUBSTR.center(size) |
| self.assertEqual(len(s), size) |
| lpadsize = rpadsize = (len(s) - len(SUBSTR)) // 2 |
| if len(s) % 2: |
| lpadsize += 1 |
| self.assertEqual(s[lpadsize:-rpadsize], SUBSTR) |
| self.assertEqual(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.assertEqual(len(s), size) |
| lpadsize = rpadsize = (len(s) - len(SUBSTR)) // 2 |
| if len(s) % 2: |
| lpadsize += 1 |
| self.assertEqual(s[lpadsize:-rpadsize], SUBSTR) |
| self.assertEqual(s.strip(), SUBSTR.strip()) |
| del s |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_count(self, size): |
| SUBSTR = ' abc def ghi' |
| s = '.' * size + SUBSTR |
| self.assertEqual(s.count('.'), size) |
| s += '.' |
| self.assertEqual(s.count('.'), size + 1) |
| self.assertEqual(s.count(' '), 3) |
| self.assertEqual(s.count('i'), 1) |
| self.assertEqual(s.count('j'), 0) |
| |
| @bigmemtest(minsize=_2G + 2, memuse=3) |
| def test_decode(self, size): |
| s = '.' * size |
| self.assertEqual(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.assertEqual(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=4) |
| 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): |
| self.skipTest("test crashes - see issue #14904") |
| try: |
| s = u"\uAAAA"*size |
| r = repr(s) |
| except MemoryError: |
| pass # acceptable on 32-bit |
| else: |
| self.assertTrue(s == eval(r)) |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_endswith(self, size): |
| SUBSTR = ' abc def ghi' |
| s = '-' * size + SUBSTR |
| self.assertTrue(s.endswith(SUBSTR)) |
| self.assertTrue(s.endswith(s)) |
| s2 = '...' + s |
| self.assertTrue(s2.endswith(s)) |
| self.assertFalse(s.endswith('a' + SUBSTR)) |
| self.assertFalse(SUBSTR.endswith(s)) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=2) |
| def test_expandtabs(self, size): |
| s = '-' * size |
| tabsize = 8 |
| self.assertEqual(s.expandtabs(), s) |
| del s |
| slen, remainder = divmod(size, tabsize) |
| s = ' \t' * slen |
| s = s.expandtabs(tabsize) |
| self.assertEqual(len(s), size - remainder) |
| self.assertEqual(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.assertEqual(s.find(' '), 0) |
| self.assertEqual(s.find(SUBSTR), 0) |
| self.assertEqual(s.find(' ', sublen), sublen + size) |
| self.assertEqual(s.find(SUBSTR, len(SUBSTR)), sublen + size) |
| self.assertEqual(s.find('i'), SUBSTR.find('i')) |
| self.assertEqual(s.find('i', sublen), |
| sublen + size + SUBSTR.find('i')) |
| self.assertEqual(s.find('i', size), |
| sublen + size + SUBSTR.find('i')) |
| self.assertEqual(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.assertEqual(s.index(' '), 0) |
| self.assertEqual(s.index(SUBSTR), 0) |
| self.assertEqual(s.index(' ', sublen), sublen + size) |
| self.assertEqual(s.index(SUBSTR, sublen), sublen + size) |
| self.assertEqual(s.index('i'), SUBSTR.index('i')) |
| self.assertEqual(s.index('i', sublen), |
| sublen + size + SUBSTR.index('i')) |
| self.assertEqual(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.assertTrue(s.isalnum()) |
| s += '.' |
| self.assertFalse(s.isalnum()) |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_isalpha(self, size): |
| SUBSTR = 'zzzzzzz' |
| s = 'a' * size + SUBSTR |
| self.assertTrue(s.isalpha()) |
| s += '.' |
| self.assertFalse(s.isalpha()) |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_isdigit(self, size): |
| SUBSTR = '123456' |
| s = '9' * size + SUBSTR |
| self.assertTrue(s.isdigit()) |
| s += 'z' |
| self.assertFalse(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.assertTrue(s.islower()) |
| s += 'A' |
| self.assertFalse(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.assertTrue(s.isspace()) |
| s += 'j' |
| self.assertFalse(s.isspace()) |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_istitle(self, size): |
| SUBSTR = '123456' |
| s = ''.join(['A', 'a' * size, SUBSTR]) |
| self.assertTrue(s.istitle()) |
| s += 'A' |
| self.assertTrue(s.istitle()) |
| s += 'aA' |
| self.assertFalse(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.assertTrue(s.isupper()) |
| s += 'a' |
| self.assertFalse(s.isupper()) |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_join(self, size): |
| s = 'A' * size |
| x = s.join(['aaaaa', 'bbbbb']) |
| self.assertEqual(x.count('a'), 5) |
| self.assertEqual(x.count('b'), 5) |
| self.assertTrue(x.startswith('aaaaaA')) |
| self.assertTrue(x.endswith('Abbbbb')) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=1) |
| def test_ljust(self, size): |
| SUBSTR = ' abc def ghi' |
| s = SUBSTR.ljust(size) |
| self.assertTrue(s.startswith(SUBSTR + ' ')) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.strip(), SUBSTR.strip()) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=2) |
| def test_lower(self, size): |
| s = 'A' * size |
| s = s.lower() |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.count('a'), size) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=1) |
| def test_lstrip(self, size): |
| SUBSTR = 'abc def ghi' |
| s = SUBSTR.rjust(size) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.lstrip(), SUBSTR.lstrip()) |
| del s |
| s = SUBSTR.ljust(size) |
| self.assertEqual(len(s), size) |
| stripped = s.lstrip() |
| self.assertTrue(stripped is s) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=2) |
| def test_replace(self, size): |
| replacement = 'a' |
| s = ' ' * size |
| s = s.replace(' ', replacement) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.count(replacement), size) |
| s = s.replace(replacement, ' ', size - 4) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.count(replacement), 4) |
| self.assertEqual(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.assertEqual(s.rfind(' '), sublen + size + SUBSTR.rfind(' ')) |
| self.assertEqual(s.rfind(SUBSTR), sublen + size) |
| self.assertEqual(s.rfind(' ', 0, size), SUBSTR.rfind(' ')) |
| self.assertEqual(s.rfind(SUBSTR, 0, sublen + size), 0) |
| self.assertEqual(s.rfind('i'), sublen + size + SUBSTR.rfind('i')) |
| self.assertEqual(s.rfind('i', 0, sublen), SUBSTR.rfind('i')) |
| self.assertEqual(s.rfind('i', 0, sublen + size), |
| SUBSTR.rfind('i')) |
| self.assertEqual(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.assertEqual(s.rindex(' '), |
| sublen + size + SUBSTR.rindex(' ')) |
| self.assertEqual(s.rindex(SUBSTR), sublen + size) |
| self.assertEqual(s.rindex(' ', 0, sublen + size - 1), |
| SUBSTR.rindex(' ')) |
| self.assertEqual(s.rindex(SUBSTR, 0, sublen + size), 0) |
| self.assertEqual(s.rindex('i'), |
| sublen + size + SUBSTR.rindex('i')) |
| self.assertEqual(s.rindex('i', 0, sublen), SUBSTR.rindex('i')) |
| self.assertEqual(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.assertTrue(s.startswith(SUBSTR + ' ')) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.strip(), SUBSTR.strip()) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=1) |
| def test_rstrip(self, size): |
| SUBSTR = ' abc def ghi' |
| s = SUBSTR.ljust(size) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.rstrip(), SUBSTR.rstrip()) |
| del s |
| s = SUBSTR.rjust(size) |
| self.assertEqual(len(s), size) |
| stripped = s.rstrip() |
| self.assertTrue(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.assertEqual(len(l), chunksize) |
| self.assertEqual(set(l), set(['a'])) |
| del l |
| l = s.split('a') |
| self.assertEqual(len(l), chunksize + 1) |
| self.assertEqual(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.assertEqual(len(l), size) |
| self.assertEqual(set(l), set(['a'])) |
| del l |
| l = s.split('a') |
| self.assertEqual(len(l), size + 1) |
| self.assertEqual(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.assertEqual(len(l), chunksize * 2) |
| self.assertEqual(set(l), set([' ' * chunksize])) |
| |
| @bigmemtest(minsize=_2G, memuse=2) |
| def test_startswith(self, size): |
| SUBSTR = ' abc def ghi' |
| s = '-' * size + SUBSTR |
| self.assertTrue(s.startswith(s)) |
| self.assertTrue(s.startswith('-' * size)) |
| self.assertFalse(s.startswith(SUBSTR)) |
| |
| @bigmemtest(minsize=_2G, memuse=1) |
| def test_strip(self, size): |
| SUBSTR = ' abc def ghi ' |
| s = SUBSTR.rjust(size) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.strip(), SUBSTR.strip()) |
| del s |
| s = SUBSTR.ljust(size) |
| self.assertEqual(len(s), size) |
| self.assertEqual(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.assertEqual(len(s), sublen * repeats) |
| self.assertEqual(s[:sublen * 3], SUBSTR.swapcase() * 3) |
| self.assertEqual(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.assertTrue(s.startswith((SUBSTR * 3).title())) |
| self.assertTrue(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.assertEqual(len(s), repeats * sublen) |
| self.assertEqual(s[:sublen], SUBSTR.translate(trans)) |
| self.assertEqual(s[-sublen:], SUBSTR.translate(trans)) |
| self.assertEqual(s.count('.'), 0) |
| self.assertEqual(s.count('!'), repeats * 2) |
| self.assertEqual(s.count('z'), repeats * 3) |
| |
| @bigmemtest(minsize=_2G + 5, memuse=2) |
| def test_upper(self, size): |
| s = 'a' * size |
| s = s.upper() |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.count('A'), size) |
| |
| @bigmemtest(minsize=_2G + 20, memuse=1) |
| def test_zfill(self, size): |
| SUBSTR = '-568324723598234' |
| s = SUBSTR.zfill(size) |
| self.assertTrue(s.endswith('0' + SUBSTR[1:])) |
| self.assertTrue(s.startswith('-0')) |
| self.assertEqual(len(s), size) |
| self.assertEqual(s.count('0'), size - len(SUBSTR)) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=2) |
| def test_format(self, size): |
| s = '-' * size |
| sf = '%s' % (s,) |
| self.assertTrue(s == sf) |
| del sf |
| sf = '..%s..' % (s,) |
| self.assertEqual(len(sf), len(s) + 4) |
| self.assertTrue(sf.startswith('..-')) |
| self.assertTrue(sf.endswith('-..')) |
| del s, sf |
| |
| size //= 2 |
| edge = '-' * size |
| s = ''.join([edge, '%s', edge]) |
| del edge |
| s = s % '...' |
| self.assertEqual(len(s), size * 2 + 3) |
| self.assertEqual(s.count('.'), 3) |
| self.assertEqual(s.count('-'), size * 2) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=5) |
| def test_repr_small(self, size): |
| s = '-' * size |
| s = repr(s) |
| self.assertEqual(len(s), size + 2) |
| self.assertEqual(s[0], "'") |
| self.assertEqual(s[-1], "'") |
| self.assertEqual(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()) |
| s = '\x00' * size |
| s = repr(s) |
| self.assertEqual(len(s), size * 4 + 2) |
| self.assertEqual(s[0], "'") |
| self.assertEqual(s[-1], "'") |
| self.assertEqual(s.count('\\'), size) |
| self.assertEqual(s.count('0'), size * 2) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=5) |
| def test_repr_large(self, size): |
| s = '\x00' * size |
| s = repr(s) |
| self.assertEqual(len(s), size * 4 + 2) |
| self.assertEqual(s[0], "'") |
| self.assertEqual(s[-1], "'") |
| self.assertEqual(s.count('\\'), size) |
| self.assertEqual(s.count('0'), size * 2) |
| |
| @bigmemtest(minsize=2**32 // 5, memuse=6+2) |
| def test_unicode_repr(self, size): |
| s = u"\uAAAA" * size |
| self.assertTrue(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.assertEqual(len(s), size) |
| s = s + s |
| self.assertEqual(len(s), size * 2) |
| self.assertEqual(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.assertEqual(len(s), size) |
| s = s * 2 |
| self.assertEqual(len(s), size * 2) |
| self.assertEqual(s.count('.'), size * 2) |
| |
| @bigmemtest(minsize=_2G + 20, memuse=2) |
| 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.assertEqual(s[i], SUBSTR[0]) |
| self.assertEqual(s[i:i + sublen], SUBSTR) |
| self.assertEqual(s[i:i + sublen:2], SUBSTR[::2]) |
| if i > 0: |
| self.assertEqual(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.assertEqual(s[len(s) - 1], SUBSTR[-1]) |
| self.assertEqual(s[-1], SUBSTR[-1]) |
| self.assertEqual(s[len(s) - 10], SUBSTR[0]) |
| self.assertEqual(s[-sublen], SUBSTR[0]) |
| self.assertEqual(s[len(s):], '') |
| self.assertEqual(s[len(s) - 1:], SUBSTR[-1]) |
| self.assertEqual(s[-1:], SUBSTR[-1]) |
| self.assertEqual(s[len(s) - sublen:], SUBSTR) |
| self.assertEqual(s[-sublen:], SUBSTR) |
| self.assertEqual(len(s[:]), len(s)) |
| self.assertEqual(len(s[:len(s) - 5]), len(s) - 5) |
| self.assertEqual(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.assertIn(SUBSTR, s) |
| self.assertNotIn(SUBSTR * 2, s) |
| self.assertIn('-', s) |
| self.assertNotIn('a', s) |
| s += 'a' |
| self.assertIn('a', s) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=2) |
| def test_compare(self, size): |
| s1 = '-' * size |
| s2 = '-' * size |
| self.assertTrue(s1 == s2) |
| del s2 |
| s2 = s1 + 'a' |
| self.assertFalse(s1 == s2) |
| del s2 |
| s2 = '.' * size |
| self.assertFalse(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.assertFalse(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.assertTrue(t1 == t2) |
| del t2 |
| t2 = (u'',) * (size + 1) |
| self.assertFalse(t1 == t2) |
| del t2 |
| t2 = (1,) * size |
| self.assertFalse(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.assertEqual(len(t), size) |
| t = t + t |
| self.assertEqual(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.assertEqual(len(t), size * 5) |
| self.assertIn(5, t) |
| self.assertNotIn((1, 2, 3, 4, 5), t) |
| self.assertNotIn(0, 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.assertFalse(h1 == hash(t2)) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=8) |
| def test_index_and_slice(self, size): |
| t = (None,) * size |
| self.assertEqual(len(t), size) |
| self.assertEqual(t[-1], None) |
| self.assertEqual(t[5], None) |
| self.assertEqual(t[size - 1], None) |
| self.assertRaises(IndexError, operator.getitem, t, size) |
| self.assertEqual(t[:5], (None,) * 5) |
| self.assertEqual(t[-5:], (None,) * 5) |
| self.assertEqual(t[20:25], (None,) * 5) |
| self.assertEqual(t[-25:-20], (None,) * 5) |
| self.assertEqual(t[size - 5:], (None,) * 5) |
| self.assertEqual(t[size - 5:size], (None,) * 5) |
| self.assertEqual(t[size - 6:size - 2], (None,) * 4) |
| self.assertEqual(t[size:size], ()) |
| self.assertEqual(t[size:size+5], ()) |
| |
| # Like test_concat, split in two. |
| def basic_test_repeat(self, size): |
| t = ('',) * size |
| self.assertEqual(len(t), size) |
| t = t * 2 |
| self.assertEqual(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.assertEqual(item, count) |
| count += 1 |
| self.assertEqual(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.assertEqual(item, count) |
| count += 1 |
| self.assertEqual(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.assertEqual(len(s), size * 3) |
| self.assertEqual(s[:5], '(0, 0') |
| self.assertEqual(s[-5:], '0, 0)') |
| self.assertEqual(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.assertTrue(l1 == l2) |
| del l2 |
| l2 = [u''] * (size + 1) |
| self.assertFalse(l1 == l2) |
| del l2 |
| l2 = [2] * size |
| self.assertFalse(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.assertEqual(len(l), size) |
| l = l + l |
| self.assertEqual(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.assertEqual(len(l), size * 2) |
| self.assertTrue(l[0] is l[-1]) |
| self.assertTrue(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.assertEqual(len(l), size * 5) |
| self.assertIn(5, l) |
| self.assertNotIn([1, 2, 3, 4, 5], l) |
| self.assertNotIn(0, l) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=8) |
| def test_hash(self, size): |
| l = [0] * size |
| self.assertRaises(TypeError, hash, l) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=8) |
| def test_index_and_slice(self, size): |
| l = [None] * size |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-1], None) |
| self.assertEqual(l[5], None) |
| self.assertEqual(l[size - 1], None) |
| self.assertRaises(IndexError, operator.getitem, l, size) |
| self.assertEqual(l[:5], [None] * 5) |
| self.assertEqual(l[-5:], [None] * 5) |
| self.assertEqual(l[20:25], [None] * 5) |
| self.assertEqual(l[-25:-20], [None] * 5) |
| self.assertEqual(l[size - 5:], [None] * 5) |
| self.assertEqual(l[size - 5:size], [None] * 5) |
| self.assertEqual(l[size - 6:size - 2], [None] * 4) |
| self.assertEqual(l[size:size], []) |
| self.assertEqual(l[size:size+5], []) |
| |
| l[size - 2] = 5 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-3:], [None, 5, None]) |
| self.assertEqual(l.count(5), 1) |
| self.assertRaises(IndexError, operator.setitem, l, size, 6) |
| self.assertEqual(len(l), size) |
| |
| l[size - 7:] = [1, 2, 3, 4, 5] |
| size -= 2 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-7:], [None, None, 1, 2, 3, 4, 5]) |
| |
| l[:7] = [1, 2, 3, 4, 5] |
| size -= 2 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[:7], [1, 2, 3, 4, 5, None, None]) |
| |
| del l[size - 1] |
| size -= 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-1], 4) |
| |
| del l[-2:] |
| size -= 2 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-1], 2) |
| |
| del l[0] |
| size -= 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[0], 2) |
| |
| del l[:2] |
| size -= 2 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[0], 4) |
| |
| # Like test_concat, split in two. |
| def basic_test_repeat(self, size): |
| l = [] * size |
| self.assertFalse(l) |
| l = [''] * size |
| self.assertEqual(len(l), size) |
| l = l * 2 |
| self.assertEqual(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.assertEqual(len(l), size) |
| self.assertTrue(l[0] is l[-1]) |
| del l |
| |
| l = [''] * size |
| l *= 2 |
| self.assertEqual(len(l), size * 2) |
| self.assertTrue(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.assertEqual(len(s), size * 3) |
| self.assertEqual(s[:5], '[0, 0') |
| self.assertEqual(s[-5:], '0, 0]') |
| self.assertEqual(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.assertEqual(len(l), size+1) |
| self.assertTrue(l[-3] is l[-2]) |
| self.assertFalse(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.assertEqual(l.count(1), size) |
| self.assertEqual(l.count("1"), 0) |
| |
| def basic_test_extend(self, size): |
| l = [file] * size |
| l.extend(l) |
| self.assertEqual(len(l), size * 2) |
| self.assertTrue(l[0] is l[-1]) |
| self.assertTrue(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.assertEqual(l.index(1), 0) |
| self.assertEqual(l.index(5, size - 5), size - 1) |
| self.assertEqual(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.assertEqual(len(l), size) |
| self.assertEqual(l[-3:], [1.0, "A", 1.0]) |
| |
| l.insert(size + 1, "B") |
| size += 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-3:], ["A", 1.0, "B"]) |
| |
| l.insert(1, "C") |
| size += 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[:3], [1.0, "C", 1.0]) |
| self.assertEqual(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.assertEqual(len(l), size) |
| |
| item = l.pop() |
| size -= 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(item, u"e") |
| self.assertEqual(l[-2:], [u"c", u"d"]) |
| |
| item = l.pop(0) |
| size -= 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(item, u"a") |
| self.assertEqual(l[:2], [u"b", u"c"]) |
| |
| item = l.pop(size - 2) |
| size -= 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(item, u"c") |
| self.assertEqual(l[-2:], [u"b", u"d"]) |
| |
| @bigmemtest(minsize=_2G + 10, memuse=8) |
| def test_remove(self, size): |
| l = [10] * size |
| self.assertEqual(len(l), size) |
| |
| l.remove(10) |
| size -= 1 |
| self.assertEqual(len(l), size) |
| |
| # Because of the earlier l.remove(), this append doesn't trigger |
| # a resize. |
| l.append(5) |
| size += 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(l[-2:], [10, 5]) |
| l.remove(5) |
| size -= 1 |
| self.assertEqual(len(l), size) |
| self.assertEqual(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.assertEqual(len(l), size * 5) |
| self.assertEqual(l[-5:], [5, 4, 3, 2, 1]) |
| self.assertEqual(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.assertEqual(len(l), size * 5) |
| self.assertEqual(l.count(1), size) |
| self.assertEqual(l[:10], [1] * 10) |
| self.assertEqual(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.assertEqual(c, 'A') |
| count += 1 |
| self.assertEqual(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() |
