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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()
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