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Code Issues Projects Releases Packages Wiki Activity Actions 8

add introspection to range objects (closes #9896)

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Patch by Daniel Urban.
This commit is contained in:
Benjamin Peterson 2011-11-05 15:17:52 -04:00
parent 03b0819389
commit 878ce389a0
3 changed files with 44 additions and 2 deletions
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29
Lib/test/test_range.py
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@ -560,6 +560,35 @@ class RangeTest(unittest.TestCase):
range(0) >= range(0)
def test_attributes(self):
# test the start, stop and step attributes of range objects
self.assert_attrs(range(0), 0, 0, 1)
self.assert_attrs(range(10), 0, 10, 1)
self.assert_attrs(range(-10), 0, -10, 1)
self.assert_attrs(range(0, 10, 1), 0, 10, 1)
self.assert_attrs(range(0, 10, 3), 0, 10, 3)
self.assert_attrs(range(10, 0, -1), 10, 0, -1)
self.assert_attrs(range(10, 0, -3), 10, 0, -3)
def assert_attrs(self, rangeobj, start, stop, step):
self.assertEqual(rangeobj.start, start)
self.assertEqual(rangeobj.stop, stop)
self.assertEqual(rangeobj.step, step)
with self.assertRaises(AttributeError):
rangeobj.start = 0
with self.assertRaises(AttributeError):
rangeobj.stop = 10
with self.assertRaises(AttributeError):
rangeobj.step = 1
with self.assertRaises(AttributeError):
del rangeobj.start
with self.assertRaises(AttributeError):
del rangeobj.stop
with self.assertRaises(AttributeError):
del rangeobj.step
def test_main():
test.support.run_unittest(RangeTest)