Testing for empty iterators?
Roy Smith
roy at panix.com
Sat Jul 3 14:06:01 EDT 2004
In the old days, if I wanted to return a sequence of items, I'd return a
list, and loop over it like this:
for thing in getListOfThings ():
do something
With iterators, I'm doing:
for thing in getThingIterator ():
do something.
Now I need to test to see if the iterator is empty. Actually, it's a
unit test where I want to assert that it is empty. In the old days, I
would have done:
assertEquals (getListOfThings (), [])
but I don't see any clean way to do this with an iterator. The best I
can come up with is something like:
flag = False
for thing in getThingIterator ():
flag = True
break
assertEquals (flag, False)
Is that really the only way to do it?
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