health: add more ci cases and fix bugs

tests/mock/http_server.go

@@ -3,6 +3,7 @@ package mock
 import (
 	"fmt"
 	"log"
+	"net"
 	"net/http"
 	"regexp"
 	"strings"
@@ -12,6 +13,36 @@ import (
 	"github.com/gorilla/websocket"
 )
 
+type HttpServer struct {
+	l net.Listener
+
+	port    int
+	handler http.HandlerFunc
+}
+
+func NewHttpServer(port int, handler http.HandlerFunc) *HttpServer {
+	return &HttpServer{
+		port:    port,
+		handler: handler,
+	}
+}
+
+func (hs *HttpServer) Start() error {
+	l, err := net.Listen("tcp", fmt.Sprintf("127.0.0.1:%d", hs.port))
+	if err != nil {
+		fmt.Printf("http server listen error: %v\n", err)
+		return err
+	}
+	hs.l = l
+
+	go http.Serve(l, http.HandlerFunc(hs.handler))
+	return nil
+}
+
+func (hs *HttpServer) Stop() {
+	hs.l.Close()
+}
+
 var upgrader = websocket.Upgrader{}
 
 func StartHttpServer(port int) {