[pygr] running a single test

[C. Titus Brown]

Hi all,

Chris was complaining that it was difficult to instantiate and run a
single test with the current test framework, because with unittest-based
tests you can't just import the test module & run a single test.

Attached is a simple script, 'run_single.py', that uses the unittest
test loader to accomplish this; try:

% python run_single.py seqdb_test.SequenceFileDB_Test

There's also a simple programmatic interface:

  >>> import seqdb_test
  >>> from run_single import run_test
  >>> run_test('SequenceFileDB_Test', seqdb_test)

I think it might be worth adding this behavior directly to runtest.py
with a simple command-line option; any thoughts?

cheers,
--titus
-- 
C. Titus Brown, c...@msu.edu

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"""
Usage:

  >>> import seqdb_test
  >>> from run_single import run_test
  >>> run_test('SequenceFileDB_Test', seqdb_test)

OR

  % python run_single.py seqdb_test.SequenceFileDB_Test

Note, run_single.py must be in the same directory as the test file being
imported.
  
"""

import sys
import unittest
import testlib

def run_test(name, module=None, verbosity=2):
    l = unittest.TestLoader()
    suite = l.loadTestsFromName(name, module)

    runner = unittest.TextTestRunner(verbosity=verbosity, descriptions=0)
    runner.run(suite)

if __name__ == '__main__':
    run_test(sys.argv[1])