Bug: Fix test framework issues (#8)

* return byte, error

* fix ci error

context.go

@@ -208,8 +208,14 @@ func (c *Context) Status(code int) {
 }
 
 // JSON sets the response body to the given JSON representation.
-func (c *Context) JSON(code int, obj interface{}) {
+func (c *Context) JSON(code int, obj interface{}) ([]byte, error) {
 	c.RequestCtx.Response.Header.SetContentType("application/json")
 	c.RequestCtx.Response.SetStatusCode(code)
-	c.RequestCtx.Response.SetBodyString(utils.ToJSON(obj))
+	jsonBody, err := utils.ToJSON(obj)
+	if err != nil {
+		return nil, err
+	}
+	c.RequestCtx.Response.SetBodyString(jsonBody)
+
+	return []byte(jsonBody), nil
 }

utils/json.go

@@ -2,10 +2,10 @@ package utils
 
 import "encoding/json"
 
-func ToJSON(v interface{}) string {
+func ToJSON(v interface{}) (string, error) {
 	b, err := json.Marshal(v)
 	if err != nil {
-		return ""
+		return "", err
 	}
-	return string(b)
+	return string(b), nil
 }

utils/json_test.go

@@ -7,7 +7,7 @@ import (
 
 func TestToJSON(t *testing.T) {
 	t.Parallel()
-	res := ToJSON("MY/NAME/IS/:PARAM/*")
+	res, _ := ToJSON("MY/NAME/IS/:PARAM/*")
 
 	fmt.Println(res)
 }