argparse and unittest python

Question

I am using argparse to handle command line arguments. The code was working fine. However, as soon as I am adding unittest.main() in the main, it is not working.

I am getting:

I am here 
option -i not recognized
Usage: testing.py [options] [test] [...]

Options:
  -h, --help       Show this message
  -v, --verbose    Verbose output
  -q, --quiet      Minimal output
  -f, --failfast   Stop on first failure
  -c, --catch      Catch control-C and display results
  -b, --buffer     Buffer stdout and stderr during test runs

Examples:
  testing.py                               - run default set of tests
  testing.py MyTestSuite                   - run suite 'MyTestSuite'
  testing.py MyTestCase.testSomething      - run MyTestCase.testSomething
  testing.py MyTestCase                    - run all 'test*' test methods
                                               in MyTestCase

I am doing like this:

if __name__ == "__main__":
    print "I am here"
    unittest.main()

There is no option -i so the error would be correct. How do you call the script? — Simeon Visser
– Simeon Visser, Commented Nov 28, 2013 at 12:19
I am calling the script like: python testing.py -isVerbose True — Exploring
– Exploring, Commented Nov 28, 2013 at 12:39
Then that is one problem: you should call it as python testing.py --verbose because you have no option declared called isVerbose. — Hannes Ovrén
– Hannes Ovrén, Commented Nov 28, 2013 at 12:41
No. I have defined isVerbose. args = parser.parse_args() isVerbose=args.isVerbose — Exploring
– Exploring, Commented Nov 28, 2013 at 12:47

user95469 · Accepted Answer · 2013-11-28 12:26:27Z

13

use

runner = unittest.TextTestRunner()
itersuite = unittest.TestLoader().loadTestsFromTestCase(MyTestClass)
runner.run(itersuite)

instead of:

unittest.main()

answered Nov 28, 2013 at 12:26

user95469

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2 Comments

Exploring Over a year ago

Brilliant, it works now. Have not understand why the unittest.main() was failing.

user95469 Over a year ago

unittest.main() seems to a look at any args passed to the main code, so it was trying to resolve your custom args which, of course, it couldn't.

Ethan Zhao · Accepted Answer · 2020-09-14 04:54:48Z

3

If you don't need any arguments, use

unittest.main(argv=[''])

answered Sep 14, 2020 at 4:54

Ethan Zhao

311 bronze badge

1 Comment

Iain Duncan Over a year ago

Excellent addition!

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