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, Nov 28 '13 at 12:19
I am calling the script like: python testing.py -isVerbose True — Exploring, Nov 28 '13 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, Nov 28 '13 at 12:41
No. I have defined isVerbose. args = parser.parse_args() isVerbose=args.isVerbose — Exploring, Nov 28 '13 at 12:47

score 12 · Accepted Answer · answered Nov 28 '13 at 12:26

12

use

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

instead of:

unittest.main()

answered Nov 28 '13 at 12:26

Matt Clarke

757
4
15

Brilliant, it works now. Have not understand why the unittest.main() was failing. – Exploring Nov 28 '13 at 12:52
2

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. – Matt Clarke Nov 28 '13 at 13:33

score 2 · Answer 2 · answered Sep 14 '20 at 04:54

2

If you don't need any arguments, use

unittest.main(argv=[''])

answered Sep 14 '20 at 04:54

Ethan Zhao

21
1

Excellent addition! – Iain Duncan Nov 11 '22 at 19:28

argparse and unittest python

2 Answers2

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