bug fix

redis/client/client.go

@@ -134,6 +134,7 @@ func (client *Client) doHeartbeat() {
 	request := &Request{
 		args:      [][]byte{[]byte("PING")},
 		heartbeat: true,
+		waiting:   &wait.Wait{},
 	}
 	request.waiting.Add(1)
 	client.working.Add(1)

redis/client/client_test.go

@@ -60,6 +60,7 @@ func TestClient(t *testing.T) {
 		}
 	}
 
+	client.doHeartbeat() // random do heartbeat
 	result = client.Send([][]byte{
 		[]byte("GET"),
 		[]byte("a"),