[tests] Don't import QUnitTestCase into tests' global namespace
Unittest's test loader will try to execute QUnitTestCase's test_javascripts method. However this class is intended to be subclassed, not to be executed directly.
This change has the following consequences:
* slightly faster test execution
* almost all rtags warnings are gone
from __future__ import print_function
try:
rtype, = __args__
except ValueError:
print('USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>')
print()
graph = {}
for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype):
graph.setdefault(fromeid, []).append(toeid)
from logilab.common.graph import get_cycles
for cycle in get_cycles(graph):
print('cycle', '->'.join(str(n) for n in cycle))