import unittest from test import test_support import operator from sys import maxint 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) def test_infinite_recursion(self): self.failUnlessRaises(TypeError, operator.index, TrapInt()) self.failUnlessRaises(TypeError, operator.index, TrapLong()) self.failUnless(slice(TrapInt()).indices(0)==(0,0,1)) self.failUnlessRaises(TypeError, slice(TrapLong()).indices, 0) def test_error(self): self.o.ind = 'dumb' self.n.ind = 'bad' self.failUnlessRaises(TypeError, operator.index, self.o) self.failUnlessRaises(TypeError, operator.index, self.n) self.failUnlessRaises(TypeError, slice(self.o).indices, 0) self.failUnlessRaises(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_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_infinite_recursion(self): self.failUnlessRaises(TypeError, operator.getitem, self.seq, TrapInt()) self.failUnlessRaises(TypeError, operator.getitem, self.seq, TrapLong()) def test_error(self): self.o.ind = 'dumb' self.n.ind = 'bad' indexobj = lambda x, obj: obj.seq[x] self.failUnlessRaises(TypeError, indexobj, self.o, self) self.failUnlessRaises(TypeError, indexobj, self.n, self) sliceobj = lambda x, obj: obj.seq[x:] self.failUnlessRaises(TypeError, sliceobj, self.o, self) self.failUnlessRaises(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.assert_(l2 is lst) self.assertEqual(lst, [5, 6, 7, 8, 9, 11] * 3) class TupleTestCase(SeqTestCase): seq = (0,10,20,30,40,50) class StringTestCase(SeqTestCase): seq = "this is a test" class UnicodeTestCase(SeqTestCase): seq = u"this is a test" 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 test_getitem(self): class GetItem(object): def __len__(self): return maxint 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], (-1, maxint)) self.assertEqual(x[self.neg:self.pos:1].indices(maxint), (0, maxint, 1)) def test_sequence_repeat(self): self.failUnlessRaises(OverflowError, lambda: "a" * self.pos) self.failUnlessRaises(OverflowError, lambda: "a" * self.neg) def test_main(): test_support.run_unittest( BaseTestCase, ListTestCase, TupleTestCase, StringTestCase, UnicodeTestCase, XRangeTestCase, OverflowTestCase, ) if __name__ == "__main__": test_main()