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