英文:
Testing gin based REST API not getting params while using net/http/httptest
问题
我正在开发一个基于Gin Go的REST API，端点的代码如下所示：
func carsByType(c *gin.Context) {fmt.Println("Go Request in Handler...")carType := c.Params.ByName("type")fmt.Println(carType)if carType != "" {}c.JSON(http.StatusBadRequest, gin.H{"result": "Bad request"})return}func main() {router := gin.Default()router.GET("/cars/:type", carsByType)router.Run(":80")}
当我通过浏览器和cURL请求端点时，一切正常，可以获取到carType的值。但是当我运行测试时，它返回了"bad request"，并且carType的值是""。
用于测试端点的代码如下所示：
func TestGetcarsByType(t *testing.T) {gin.SetMode(gin.TestMode)handler := carsByTyperouter := gin.Default()router.GET("/cars/1", handler)req, err := http.NewRequest("GET", "/cars/1", nil)if err != nil {fmt.Println(err)}resp := httptest.NewRecorder()router.ServeHTTP(resp, req)assert.Equal(t, resp.Code, 200)}
我做错了什么？
英文:
I am developing a REST API based on Gin Go, the endpoint looks something like below:
func carsByType(c *gin.Context) {fmt.Println("Go Request in Handler...")carType := c.Params.ByName("type")fmt.Println(carType)if carType != "" {}c.JSON(http.StatusBadRequest, gin.H{"result": "Bad request"})return}func main() {router := gin.Default()router.GET("/cars/:type", carsByType)router.Run(":80")}
When I am making request to the endpoint via browser and cURL its just working fine, getting the carType value but when I am running the tests its returning bad request and getting carType is "".
For testing the endpoint my test code looks like this:
func TestGetcarsByType(t *testing.T) {gin.SetMode(gin.TestMode)handler := carsByTyperouter := gin.Default()router.GET("/cars/1", handler)req, err := http.NewRequest("GET", "/cars/1", nil)if err != nil {fmt.Println(err)}resp := httptest.NewRecorder()router.ServeHTTP(resp, req)assert.Equal(t, resp.Code, 200)}
What am I doing wrong?
答案1
得分: 9
router.GET("/cars/1", handler) 应该改为 router.GET("/cars/:type", handler) 在你的测试中。
请注意，更好的做法（更易测试，减少路由的重复）是创建一个 SetupRouter() *gin.Engine 函数，该函数返回所有的路由。例如：
// package main// server.go// 这是你创建 gin.Default() 并添加路由的地方func SetupRouter() *gin.Engine {router := gin.Default()router.GET("/cars/:type", carsByType)return router}func main() {router := SetupRouter()router.Run()}// router_test.gotestRouter := SetupRouter()req, err := http.NewRequest("GET", "/cars/1", nil)if err != nil {fmt.Println(err)}resp := httptest.NewRecorder()testRouter.ServeHTTP(resp, req)assert.Equal(t, resp.Code, 200)
英文:
router.GET("/cars/1", handler) should be router.GET("/cars/:type", handler) in your test.
Note that a better (more testable; less duplication of routes) would be to create a SetupRouter() *gin.Engine function that returns all of your routes. e.g.
// package main// server.go// This is where you create a gin.Default() and add routes to itfunc SetupRouter() *gin.Engine {router := gin.Default()router.GET("/cars/:type", carsByType)return router}func main() {router := SetupRouter()router.Run()}// router_test.gotestRouter := SetupRouter()req, err := http.NewRequest("GET", "/cars/1", nil)if err != nil {fmt.Println(err)}resp := httptest.NewRecorder()testRouter.ServeHTTP(resp, req)assert.Equal(t, resp.Code, 200)
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