if k.String() == cacheKey {
			return len(conns)
		}
	}
	return 0
}

func (t *Transport) IdleConnWaitMapSizeForTesting() int {
	t.idleMu.Lock()
	defer t.idleMu.Unlock()
	return len(t.idleConnWait)
}

func (t *Transport) IsIdleForTesting() bool {
	t.idleMu.Lock()
	defer t.idleMu.Unlock()
	return t.closeIdle
}

func (t *Transport) QueueForIdleConnForTesting() {
	t.queueForIdleConn(nil)

		if stop {
			return delivered
		}
	}

	// Register to receive next connection that becomes idle.
	if t.idleConnWait == nil {
		t.idleConnWait = make(map[connectMethodKey]wantConnQueue)
	}
	q := t.idleConnWait[w.key]
	q.cleanFrontNotWaiting()
	q.pushBack(w)
	t.idleConnWait[w.key] = q
	return false
}

// removeIdleConn marks pconn as dead.