Method checkref

tests/test_record.py:36–46

(self, *objs)

    @contextlib.contextmanager
    def checkref(self, *objs):
        cnt = [sys.getrefcount(objs[i]) for i in range(len(objs))]
        yield
        for _ in range(3):
            gc.collect()
        for i in range(len(objs)):
            before = cnt[i]
            after = sys.getrefcount(objs[i])
            if before != after:
                self.fail('refcounts differ for {!r}: {:+}'.format(
                    objs[i], after - before))

    def test_record_gc(self):
        elem = object()