How to parse command line arguments from python nosetests plugin to testcase

[fzhurd]

Hi, all,

I am writing a simple nosetests plugin. The aim is to parse the arguments from command line, then this parsed value could be used in the testcase.

Some previous posts advised to use global variable, but I still could not figure it out. Anything wrong with my code? Thanks.

test_plugin file:

import nose

from nose.plugins import Plugin

PARAMETERS={}

class Parameters_Example(Plugin):
    global PARAMETERS
    name = 'parameters_example'
    score = 1
    enabled = True

def options(self, parser, env):

    super(Parameters_Example, self).options(parser, env)
    parser.add_option('--param',
                     dest='param',
                     action='append',
                     help='Input all required parameters')

def configure(self, options, config):

    super(Parameters_Example, self).configure(options, config)
    global PARAMETERS
    PARAMETERS=options.param

def begin(self):
    pass

if __name__ == '__main__':
        nose.main(addplugins=[Parameters_Example()]) 

tests.py 

from unittest import TestCase

  from test_plugin import PARAMETERS

  print PARAMETERS

  class Test_Example(TestCase):
       def setUp(self):
       pass
  def testb(self):            
       pass

 To run the tests with plugin:

./test_plugin.py -sv tests.py --with-parameters_example --param HOST:'localhost'
But, the tests.py still could not receive the value from the plugin, it prints out empty.
Thanks.