def assert_meaning_changes(self, removed=(), added=()):
actual_removed, actual_added = self.get_meaning_changes()
assert (not setify(removed).symmetric_difference(setify(actual_removed)) and
not setify(added).symmetric_difference(setify(actual_added))), (
'Expected:\nremoved=%r,\nadded=%r\nGot:\nremoved=%r,\nadded=%r' % (
listify(removed), listify(added),
listify(actual_removed), listify(actual_added)))
def get_meaning_changes(self):
new_meanings = dump_meanings()
try:
old_meanings = self.previous_meanings_dump
except AttributeError:
actual_removed = ()
actual_added = new_meanings
else:
actual_removed = setify(old_meanings).difference(
setify(new_meanings))
actual_added = setify(new_meanings).difference(
setify(old_meanings))
self.previous_meanings_dump = new_meanings
return actual_removed, actual_added
