def _context(self, sig,
rate_limits=True, events=True, utc=True, limit=None):
assert sig.type.Strategy
reserved = Mock()
consumer = Mock()
consumer.task_buckets = defaultdict(lambda: None)
if limit:
bucket = TokenBucket(rate(limit), capacity=1)
consumer.task_buckets[sig.task] = bucket
consumer.controller.state.revoked = set()
consumer.disable_rate_limits = not rate_limits
consumer.event_dispatcher.enabled = events
s = sig.type.start_strategy(self.app, consumer, task_reserved=reserved)
assert s
message = self.task_message_from_sig(
self.app, sig, utc=utc, TaskMessage=self.get_message_class(),
)
message = self.prepare_message(message)
yield self.Context(sig, s, reserved, consumer, message)
