def test_interfaces_walking():
"""Check that interfaces walking does yield interfaces and respect depth.
"""
ints = {'interface1':
ObjectDependentInfos(interfaces={'i': ObjectDependentInfos()}),
'interface2': ObjectDependentInfos()}
infos = ObjectDependentInfos(interfaces=ints)
print(list(zip(*infos.walk_interfaces())))
assert (sorted(list(zip(*infos.walk_interfaces()))[0]) ==
sorted(('interface1', 'i', 'interface2')))
assert (sorted(list(zip(*infos.walk_interfaces(0)))[0]) ==
sorted(('interface1', 'interface2')))
def test_dependencies_handling():
"""Check that dependencies are correctly updated when instruments are.
"""
infos = ObjectDependentInfos(dependencies=['test'])
infos.instruments = ['e']
assert len(infos.dependencies) == 3
infos.instruments.update(['t', 'y'])
assert len(infos.dependencies) == 3
infos.instruments = []
assert set(['test']) == infos.dependencies
