@boegel although your #556 unittests look more complete, this check basic functionality for ol and new configuration (and fixes one bug for newstyle). we should discuss on merging them

I propose I clean up #556 to merge it in, and I'll then handle this pull request to resolve the conflicts that it will produce (i.e., join your and my config.py).

Reworked this on top of #556 (which should be merged in first!), see stdweird#18.

• got rid of get_opts_config, used configure instead
• got rid of test_legacy_opts, integrated missing tests (new vs old style) in test_legacy_env_vars
• rely on setUp and tearDown
• refactoring w.r.t. style
• fixed another bug (?) along the way, i.e. rename args used in config.init to dance around error:

Traceback (most recent call last):
  File "easybuild/test/config.py", line 347, in test_generaloption_config
    opts, evars = self.get_opts_config(args=args)
  File "easybuild/test/config.py", line 76, in get_opts_config
    config.init(options, eb_go.get_options_by_section('config'))
  File "/Users/kehoste/.local/lib/python2.7/site-packages/easybuild_framework-1.3.0dev-py2.7.egg/easybuild/tools/config.py", line 306, in init
    (options.repository, repo.__name__, args, err))
NameError: global name 'args' is not defined

All unit tests pass in this branch on my end:

$ python -m easybuild.test.suite
.............................................................
----------------------------------------------------------------------
Ran 61 tests in 206.756s

OK

@boegel merged your PR, fixed some small issues. all unittests

Looks great, merging it in!