| import unittest |
| from test import test_support |
| import operator |
| |
| class oldstyle: |
| def __index__(self): |
| return self.ind |
| |
| class newstyle(object): |
| def __index__(self): |
| return self.ind |
| |
| class BaseTestCase(unittest.TestCase): |
| def setUp(self): |
| self.o = oldstyle() |
| self.n = newstyle() |
| self.o2 = oldstyle() |
| self.n2 = newstyle() |
| |
| def test_basic(self): |
| self.o.ind = -2 |
| self.n.ind = 2 |
| assert(self.seq[self.n] == self.seq[2]) |
| assert(self.seq[self.o] == self.seq[-2]) |
| assert(operator.index(self.o) == -2) |
| assert(operator.index(self.n) == 2) |
| |
| def test_error(self): |
| self.o.ind = 'dumb' |
| self.n.ind = 'bad' |
| myfunc = lambda x, obj: obj.seq[x] |
| self.failUnlessRaises(TypeError, operator.index, self.o) |
| self.failUnlessRaises(TypeError, operator.index, self.n) |
| self.failUnlessRaises(TypeError, myfunc, self.o, self) |
| self.failUnlessRaises(TypeError, myfunc, self.n, self) |
| |
| def test_slice(self): |
| self.o.ind = 1 |
| self.o2.ind = 3 |
| self.n.ind = 2 |
| self.n2.ind = 4 |
| assert(self.seq[self.o:self.o2] == self.seq[1:3]) |
| assert(self.seq[self.n:self.n2] == self.seq[2:4]) |
| |
| def test_repeat(self): |
| self.o.ind = 3 |
| self.n.ind = 2 |
| assert(self.seq * self.o == self.seq * 3) |
| assert(self.seq * self.n == self.seq * 2) |
| assert(self.o * self.seq == self.seq * 3) |
| assert(self.n * self.seq == self.seq * 2) |
| |
| def test_wrappers(self): |
| n = self.n |
| n.ind = 5 |
| assert n.__index__() == 5 |
| assert 6 .__index__() == 6 |
| assert -7L.__index__() == -7 |
| assert self.seq.__getitem__(n) == self.seq[5] |
| assert self.seq.__mul__(n) == self.seq * 5 |
| assert self.seq.__rmul__(n) == self.seq * 5 |
| |
| def test_infinite_recusion(self): |
| class Trap1(int): |
| def __index__(self): |
| return self |
| class Trap2(long): |
| def __index__(self): |
| return self |
| self.failUnlessRaises(TypeError, operator.getitem, self.seq, Trap1()) |
| self.failUnlessRaises(TypeError, operator.getitem, self.seq, Trap2()) |
| |
| |
| class ListTestCase(BaseTestCase): |
| 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' |
| assert lst == list('abYdefghXj') |
| |
| lst = [5, 6, 7, 8, 9, 10, 11] |
| lst.__setitem__(self.n, "here") |
| assert lst == [5, 6, "here", 8, 9, 10, 11] |
| lst.__delitem__(self.n) |
| assert 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 |
| assert lst == [6, 4, 6, 4] |
| lst *= self.n |
| assert lst == [6, 4, 6, 4] * 3 |
| |
| lst = [5, 6, 7, 8, 9, 11] |
| l2 = lst.__imul__(self.n) |
| assert l2 is lst |
| assert lst == [5, 6, 7, 8, 9, 11] * 3 |
| |
| |
| class TupleTestCase(BaseTestCase): |
| seq = (0,10,20,30,40,50) |
| |
| class StringTestCase(BaseTestCase): |
| seq = "this is a test" |
| |
| class UnicodeTestCase(BaseTestCase): |
| seq = u"this is a test" |
| |
| |
| class XRangeTestCase(unittest.TestCase): |
| |
| def test_xrange(self): |
| n = newstyle() |
| n.ind = 5 |
| assert xrange(1, 20)[n] == 6 |
| assert xrange(1, 20).__getitem__(n) == 6 |
| |
| |
| def test_main(): |
| test_support.run_unittest( |
| ListTestCase, |
| TupleTestCase, |
| StringTestCase, |
| UnicodeTestCase, |
| XRangeTestCase, |
| ) |
| |
| if __name__ == "__main__": |
| test_main() |