import unittest | |
from test import test_support | |
import operator | |
from sys import maxint | |
maxsize = test_support.MAX_Py_ssize_t | |
minsize = -maxsize-1 | |
class oldstyle: | |
def __index__(self): | |
return self.ind | |
class newstyle(object): | |
def __index__(self): | |
return self.ind | |
class TrapInt(int): | |
def __index__(self): | |
return self | |
class TrapLong(long): | |
def __index__(self): | |
return self | |
class BaseTestCase(unittest.TestCase): | |
def setUp(self): | |
self.o = oldstyle() | |
self.n = newstyle() | |
def test_basic(self): | |
self.o.ind = -2 | |
self.n.ind = 2 | |
self.assertEqual(operator.index(self.o), -2) | |
self.assertEqual(operator.index(self.n), 2) | |
def test_slice(self): | |
self.o.ind = 1 | |
self.n.ind = 2 | |
slc = slice(self.o, self.o, self.o) | |
check_slc = slice(1, 1, 1) | |
self.assertEqual(slc.indices(self.o), check_slc.indices(1)) | |
slc = slice(self.n, self.n, self.n) | |
check_slc = slice(2, 2, 2) | |
self.assertEqual(slc.indices(self.n), check_slc.indices(2)) | |
def test_wrappers(self): | |
self.o.ind = 4 | |
self.n.ind = 5 | |
self.assertEqual(6 .__index__(), 6) | |
self.assertEqual(-7L.__index__(), -7) | |
self.assertEqual(self.o.__index__(), 4) | |
self.assertEqual(self.n.__index__(), 5) | |
self.assertEqual(True.__index__(), 1) | |
self.assertEqual(False.__index__(), 0) | |
def test_subclasses(self): | |
r = range(10) | |
self.assertEqual(r[TrapInt(5):TrapInt(10)], r[5:10]) | |
self.assertEqual(r[TrapLong(5):TrapLong(10)], r[5:10]) | |
self.assertEqual(slice(TrapInt()).indices(0), (0,0,1)) | |
self.assertEqual(slice(TrapLong(0)).indices(0), (0,0,1)) | |
def test_error(self): | |
self.o.ind = 'dumb' | |
self.n.ind = 'bad' | |
self.assertRaises(TypeError, operator.index, self.o) | |
self.assertRaises(TypeError, operator.index, self.n) | |
self.assertRaises(TypeError, slice(self.o).indices, 0) | |
self.assertRaises(TypeError, slice(self.n).indices, 0) | |
class SeqTestCase(unittest.TestCase): | |
# This test case isn't run directly. It just defines common tests | |
# to the different sequence types below | |
def setUp(self): | |
self.o = oldstyle() | |
self.n = newstyle() | |
self.o2 = oldstyle() | |
self.n2 = newstyle() | |
def test_index(self): | |
self.o.ind = -2 | |
self.n.ind = 2 | |
self.assertEqual(self.seq[self.n], self.seq[2]) | |
self.assertEqual(self.seq[self.o], self.seq[-2]) | |
def test_slice(self): | |
self.o.ind = 1 | |
self.o2.ind = 3 | |
self.n.ind = 2 | |
self.n2.ind = 4 | |
self.assertEqual(self.seq[self.o:self.o2], self.seq[1:3]) | |
self.assertEqual(self.seq[self.n:self.n2], self.seq[2:4]) | |
def test_slice_bug7532(self): | |
seqlen = len(self.seq) | |
self.o.ind = int(seqlen * 1.5) | |
self.n.ind = seqlen + 2 | |
self.assertEqual(self.seq[self.o:], self.seq[0:0]) | |
self.assertEqual(self.seq[:self.o], self.seq) | |
self.assertEqual(self.seq[self.n:], self.seq[0:0]) | |
self.assertEqual(self.seq[:self.n], self.seq) | |
if isinstance(self.seq, ClassicSeq): | |
return | |
# These tests fail for ClassicSeq (see bug #7532) | |
self.o2.ind = -seqlen - 2 | |
self.n2.ind = -int(seqlen * 1.5) | |
self.assertEqual(self.seq[self.o2:], self.seq) | |
self.assertEqual(self.seq[:self.o2], self.seq[0:0]) | |
self.assertEqual(self.seq[self.n2:], self.seq) | |
self.assertEqual(self.seq[:self.n2], self.seq[0:0]) | |
def test_repeat(self): | |
self.o.ind = 3 | |
self.n.ind = 2 | |
self.assertEqual(self.seq * self.o, self.seq * 3) | |
self.assertEqual(self.seq * self.n, self.seq * 2) | |
self.assertEqual(self.o * self.seq, self.seq * 3) | |
self.assertEqual(self.n * self.seq, self.seq * 2) | |
def test_wrappers(self): | |
self.o.ind = 4 | |
self.n.ind = 5 | |
self.assertEqual(self.seq.__getitem__(self.o), self.seq[4]) | |
self.assertEqual(self.seq.__mul__(self.o), self.seq * 4) | |
self.assertEqual(self.seq.__rmul__(self.o), self.seq * 4) | |
self.assertEqual(self.seq.__getitem__(self.n), self.seq[5]) | |
self.assertEqual(self.seq.__mul__(self.n), self.seq * 5) | |
self.assertEqual(self.seq.__rmul__(self.n), self.seq * 5) | |
def test_subclasses(self): | |
self.assertEqual(self.seq[TrapInt()], self.seq[0]) | |
self.assertEqual(self.seq[TrapLong()], self.seq[0]) | |
def test_error(self): | |
self.o.ind = 'dumb' | |
self.n.ind = 'bad' | |
indexobj = lambda x, obj: obj.seq[x] | |
self.assertRaises(TypeError, indexobj, self.o, self) | |
self.assertRaises(TypeError, indexobj, self.n, self) | |
sliceobj = lambda x, obj: obj.seq[x:] | |
self.assertRaises(TypeError, sliceobj, self.o, self) | |
self.assertRaises(TypeError, sliceobj, self.n, self) | |
class ListTestCase(SeqTestCase): | |
seq = [0,10,20,30,40,50] | |
def test_setdelitem(self): | |
self.o.ind = -2 | |
self.n.ind = 2 | |
lst = list('ab!cdefghi!j') | |
del lst[self.o] | |
del lst[self.n] | |
lst[self.o] = 'X' | |
lst[self.n] = 'Y' | |
self.assertEqual(lst, list('abYdefghXj')) | |
lst = [5, 6, 7, 8, 9, 10, 11] | |
lst.__setitem__(self.n, "here") | |
self.assertEqual(lst, [5, 6, "here", 8, 9, 10, 11]) | |
lst.__delitem__(self.n) | |
self.assertEqual(lst, [5, 6, 8, 9, 10, 11]) | |
def test_inplace_repeat(self): | |
self.o.ind = 2 | |
self.n.ind = 3 | |
lst = [6, 4] | |
lst *= self.o | |
self.assertEqual(lst, [6, 4, 6, 4]) | |
lst *= self.n | |
self.assertEqual(lst, [6, 4, 6, 4] * 3) | |
lst = [5, 6, 7, 8, 9, 11] | |
l2 = lst.__imul__(self.n) | |
self.assertIs(l2, lst) | |
self.assertEqual(lst, [5, 6, 7, 8, 9, 11] * 3) | |
class _BaseSeq: | |
def __init__(self, iterable): | |
self._list = list(iterable) | |
def __repr__(self): | |
return repr(self._list) | |
def __eq__(self, other): | |
return self._list == other | |
def __len__(self): | |
return len(self._list) | |
def __mul__(self, n): | |
return self.__class__(self._list*n) | |
__rmul__ = __mul__ | |
def __getitem__(self, index): | |
return self._list[index] | |
class _GetSliceMixin: | |
def __getslice__(self, i, j): | |
return self._list.__getslice__(i, j) | |
class ClassicSeq(_BaseSeq): pass | |
class NewSeq(_BaseSeq, object): pass | |
class ClassicSeqDeprecated(_GetSliceMixin, ClassicSeq): pass | |
class NewSeqDeprecated(_GetSliceMixin, NewSeq): pass | |
class TupleTestCase(SeqTestCase): | |
seq = (0,10,20,30,40,50) | |
class StringTestCase(SeqTestCase): | |
seq = "this is a test" | |
class ByteArrayTestCase(SeqTestCase): | |
seq = bytearray("this is a test") | |
class UnicodeTestCase(SeqTestCase): | |
seq = u"this is a test" | |
class ClassicSeqTestCase(SeqTestCase): | |
seq = ClassicSeq((0,10,20,30,40,50)) | |
class NewSeqTestCase(SeqTestCase): | |
seq = NewSeq((0,10,20,30,40,50)) | |
class ClassicSeqDeprecatedTestCase(SeqTestCase): | |
seq = ClassicSeqDeprecated((0,10,20,30,40,50)) | |
class NewSeqDeprecatedTestCase(SeqTestCase): | |
seq = NewSeqDeprecated((0,10,20,30,40,50)) | |
class XRangeTestCase(unittest.TestCase): | |
def test_xrange(self): | |
n = newstyle() | |
n.ind = 5 | |
self.assertEqual(xrange(1, 20)[n], 6) | |
self.assertEqual(xrange(1, 20).__getitem__(n), 6) | |
class OverflowTestCase(unittest.TestCase): | |
def setUp(self): | |
self.pos = 2**100 | |
self.neg = -self.pos | |
def test_large_longs(self): | |
self.assertEqual(self.pos.__index__(), self.pos) | |
self.assertEqual(self.neg.__index__(), self.neg) | |
def _getitem_helper(self, base): | |
class GetItem(base): | |
def __len__(self): | |
return maxint # cannot return long here | |
def __getitem__(self, key): | |
return key | |
x = GetItem() | |
self.assertEqual(x[self.pos], self.pos) | |
self.assertEqual(x[self.neg], self.neg) | |
self.assertEqual(x[self.neg:self.pos].indices(maxsize), | |
(0, maxsize, 1)) | |
self.assertEqual(x[self.neg:self.pos:1].indices(maxsize), | |
(0, maxsize, 1)) | |
def _getslice_helper_deprecated(self, base): | |
class GetItem(base): | |
def __len__(self): | |
return maxint # cannot return long here | |
def __getitem__(self, key): | |
return key | |
def __getslice__(self, i, j): | |
return i, j | |
x = GetItem() | |
self.assertEqual(x[self.pos], self.pos) | |
self.assertEqual(x[self.neg], self.neg) | |
self.assertEqual(x[self.neg:self.pos], (maxint+minsize, maxsize)) | |
self.assertEqual(x[self.neg:self.pos:1].indices(maxsize), | |
(0, maxsize, 1)) | |
def test_getitem(self): | |
self._getitem_helper(object) | |
with test_support.check_py3k_warnings(): | |
self._getslice_helper_deprecated(object) | |
def test_getitem_classic(self): | |
class Empty: pass | |
# XXX This test fails (see bug #7532) | |
#self._getitem_helper(Empty) | |
with test_support.check_py3k_warnings(): | |
self._getslice_helper_deprecated(Empty) | |
def test_sequence_repeat(self): | |
self.assertRaises(OverflowError, lambda: "a" * self.pos) | |
self.assertRaises(OverflowError, lambda: "a" * self.neg) | |
def test_main(): | |
test_support.run_unittest( | |
BaseTestCase, | |
ListTestCase, | |
TupleTestCase, | |
ByteArrayTestCase, | |
StringTestCase, | |
UnicodeTestCase, | |
ClassicSeqTestCase, | |
NewSeqTestCase, | |
XRangeTestCase, | |
OverflowTestCase, | |
) | |
with test_support.check_py3k_warnings(): | |
test_support.run_unittest( | |
ClassicSeqDeprecatedTestCase, | |
NewSeqDeprecatedTestCase, | |
) | |
if __name__ == "__main__": | |
test_main() |