[Python-checkins] python/dist/src/Lib/test test_itertools.py, 1.29, 1.30 (original) (raw)

rhettinger at users.sourceforge.net rhettinger at users.sourceforge.net
Sat May 8 15:49:45 EDT 2004

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Update of /cvsroot/python/python/dist/src/Lib/test In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv2267/Lib/test

Modified Files: test_itertools.py Log Message: SF #950057: itertools.chain doesn't "process" exceptions as they occur

Both cycle() and chain() were handling exceptions only when switching input sources. The patch makes the handle more immediate.

Will backport.

Index: test_itertools.py

RCS file: /cvsroot/python/python/dist/src/Lib/test/test_itertools.py,v retrieving revision 1.29 retrieving revision 1.30 diff -C2 -d -r1.29 -r1.30 *** test_itertools.py 10 Feb 2004 09:25:40 -0000 1.29 --- test_itertools.py 8 May 2004 19:49:42 -0000 1.30

*** 645,648 **** --- 645,678 ----

• def test_sf_950057(self):

•     # Make sure that chain() and cycle() catch exceptions immediately

•     # rather than when shifting between input sources

•     def gen1():

•         hist.append(0)

•         yield 1

•         hist.append(1)

•         assert False

•         hist.append(2)

•     def gen2(x):

•         hist.append(3)

•         yield 2

•         hist.append(4)

•         if x:

•             raise StopIteration

•     hist = []

•     self.assertRaises(AssertionError, list, chain(gen1(), gen2(False)))

•     self.assertEqual(hist, [0,1])

•     hist = []

•     self.assertRaises(AssertionError, list, chain(gen1(), gen2(True)))

•     self.assertEqual(hist, [0,1])

•     hist = []

•     self.assertRaises(AssertionError, list, cycle(gen1()))

•     self.assertEqual(hist, [0,1])

• libreftest = """ Doctest for examples in the library reference: libitertools.tex

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