doctest not seeing any of my doc tests

[Steven D'Aprano]

I have a function in my module:

def selftest(verbose=False):
import doctest
doctest.testmod(verbose=verbose)


When I run it, it fails to find any of my doc tests, including the tests
in __main__, and in fact it looks like it can't even find my functions
and classes:

1 items had no tests:
__main__
0 tests in 1 items.
0 passed and 0 failed.
Test passed.


The second and subsequent times I call selftest, I get the same result
except that it adds this line to the end:

*** DocTestRunner.merge: '__main__' in both testers; summing outcomes.


I've exited from Python and restarted the interactive interpreter. I've
deleted the module .pyc file. Neither has helped.

I've tried reading over the doctest module to see if there are any hints
as to what's going wrong, but it's quite opaque to me. If there's anyone
out there with a good understanding of doctest, I'd appreciate some
pointers for where to start looking, or otherwise how to fix this problem.

For what it's worth, I'm running

Python 2.5 (r25:51908, Apr 10 2007, 10:29:13)
[GCC 4.1.2 20070403 (Red Hat 4.1.2-8)] on linux2

 

[Fredrik Lundh]

I have a function in my module:

def selftest(verbose=False):
import doctest
doctest.testmod(verbose=verbose)

what happens if you change the above to

def selftest(verbose=False):
import doctest, yourmodule
doctest.testmod(yourmodule, verbose=verbose)

(where yourmodule is the name of your module, obviously)

</F>

 

[bearophileHUGS]

Steven D'Aprano, first of all you can try to run a minimal module, to
see if your doctesting works, like:

"""3
"""
def foo():
""" 1
"""
return 0
import doctest
doctest.testmod()

If that works correctly, then you can show us some more of the code
and tests.

Bye,
bearophile

 

[Steven D'Aprano]

what happens if you change the above to

def selftest(verbose=False):
import doctest, yourmodule
doctest.testmod(yourmodule, verbose=verbose)

(where yourmodule is the name of your module, obviously)

Well, that certainly fixed the problem, thanks. It now correctly runs all
my doctests.

But I don't understand why a bare doctest.testmod() works when you run it
non-interactively, but fails when run interactively.