class TestMediaInfoReadonlyEditing(TestCase):
    """Test writing structured data of FilePage."""

    # Create valid API requests which will fail to missing permission.

    # commons.wikimedia.beta.wmflabs.org
    family = 'commons'
    code = 'beta'

Traceback (most recent call last):
  File "/src/pywikibot/login.py", line 102, in __init__
    user = code_to_usr.get(site.code) or code_to_usr['*']
KeyError: '*'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/src/tests/file_tests.py", line 533, in test_edit_claims
    item.addClaim(new_claim)
  File "/src/pywikibot/page/_wikibase.py", line 533, in addClaim
    self.repo.addClaim(self, claim, bot=bot, **kwargs)
  File "/src/pywikibot/site/_decorators.py", line 86, in callee
    return fn(self, *args, **kwargs)
  File "/src/pywikibot/site/_datasite.py", line 344, in addClaim
    'token': self.tokens['csrf'],
  File "/src/pywikibot/site/_tokenwallet.py", line 39, in __getitem__
    self.site.login()
  File "/src/pywikibot/site/_apisite.py", line 432, in login
    user=self.username())
  File "/src/pywikibot/login.py", line 110, in __init__
    "'myUsername'".format(site=site))
pywikibot.exceptions.NoUsernameError: ERROR: username for commons:beta is undefined.
If you have a username for that site, please add a line to user config file (user_config.py) as follows:
usernames['commons']['beta'] = 'myUsername'