fix(http): LimitedRequest limit ineffective sometime (#45)

Author: jianxiaoguo

events/events_test.go

@@ -43,11 +43,11 @@ type fakeHTTPServer struct{}
 
 func (fakeHTTPServer) ServeHTTP(res http.ResponseWriter, req *http.Request) {
 	res.Header().Add("DRYCC_API_VERSION", drycc.APIVersion)
-	if req.URL.Path == "/v2/apps/example-go/events/" && req.Method == "GET" && req.URL.RawQuery == "ptype=example-go-web" {
+	if req.URL.Path == "/v2/apps/example-go/events/" && req.Method == "GET" && req.URL.RawQuery == "ptype=example-go-web&limit=100" {
 		res.Write([]byte(ptypeEventsFixture))
 		return
 	}
-	if req.URL.Path == "/v2/apps/example-go/events/" && req.Method == "GET" && req.URL.RawQuery == "pod_name=example-go-web-6b44dbd6c8-h89cg" {
+	if req.URL.Path == "/v2/apps/example-go/events/" && req.Method == "GET" && req.URL.RawQuery == "pod_name=example-go-web-6b44dbd6c8-h89cg&limit=100" {
 		res.Write([]byte(podEventsFixture))
 		return
 	}

http.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"strconv"
 	"strings"
 )
@@ -85,7 +86,19 @@ func (c *Client) Request(method string, path string, body []byte) (*http.Respons
 
 // LimitedRequest allows limiting the number of responses in a request.
 func (c *Client) LimitedRequest(path string, results int) (string, int, error) {
-	res, reqErr := c.Request("GET", path+"?limit="+strconv.Itoa(results), nil)
+	var query string
+	u, err := url.Parse(path)
+	if err != nil {
+		return "", -1, err
+	}
+
+	if len(u.Query()) > 0 {
+		query = "&limit=" + strconv.Itoa(results)
+	} else {
+		query = "?limit=" + strconv.Itoa(results)
+	}
+
+	res, reqErr := c.Request("GET", path+query, nil)
 
 	if reqErr != nil && !IsErrAPIMismatch(reqErr) {
 		return "", -1, reqErr