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go语言单元测试之二gin框架用httptest做单元测试

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go语言单元测试之二：gin框架用httptest做单元测试

一，安装用到的库

1,testify的代码地址:

2,从命令行安装:

liuhongdi@ku:~$ go get -u github.com/stretchr/testify

我们可以用testify的assert模块简化代码

说明：刘宏缔的go森林是一个专注golang的博客，

网站：

原文:

说明：作者:刘宏缔 邮箱:

二，演示项目的相关信息

1，地址:

2，功能说明：演示了用httptest做gin框架中接口(controller或称handler)的测试

3，项目结构：如图:

https://i-blog.csdnimg.cn/blog_migrate/69645200ee16430b1ada42c1b5037b54.png

三，go代码说明

1，controller/userController.go

package controller

import (
	"github.com/gin-gonic/gin"
	"github.com/gin-gonic/gin/binding"
	"github.com/liuhongdi/gintest01/global"
	"strconv"
)

//post struct
type TestForPost struct {
	Username string  `form:"username" binding:"required,min=6"`
	Password string  `form:"password" binding:"required,min=6,max=12"`
}

type UserController struct{}
func NewUserController() UserController {
	return UserController{}
}

// Get接口
func (g *UserController) GetUser(c *gin.Context)  {
	res := global.NewResult(c)
	uid := c.DefaultQuery("uid", "0")
	uidint, err := strconv.ParseInt(uid, 10, 64)
	if (err!=nil) {
		res.Error(1,"用户id需要为整数")
		return
	}
	if (uidint <= 0) {
		res.Error(2,"用户id<=0")
		return
	}
	res.Success("success")
	return
}

// Post接口
func (g *UserController) PostUser(c *gin.Context) {
	res := global.NewResult(c)
	req := &TestForPost{}
	if err := c.ShouldBindWith(req, binding.Form); err != nil {
		//fmt.Println("bind error",err)
		res.Error(1,"参数不匹配")
		return
	}
	res.Success("success")
}

2,global/result.go

package global
import (
	"github.com/gin-gonic/gin"
	"net/http"
)

type Result struct {
	Ctx *gin.Context
}
//返回结果集的格式
type ResultCont struct {
	Code	int  `json:"code"` // 代码
	Msg string  `json:"msg"`   //提示信息
	Data interface{} `json:"data"`  //数据
}

func NewResult(ctx *gin.Context) *Result {
	return &Result{Ctx: ctx}
}
//成功
func (r *Result) Success(data interface{}) {
	if (data == nil) {
		data = gin.H{}
	}
	res := ResultCont{}
	res.Code = 0
	res.Msg = ""
	res.Data = data
	r.Ctx.JSON(http.StatusOK,res)
}
//报错
func (r *Result)Error(code int,msg string) {
	res := ResultCont{}
	res.Code = code
	res.Msg = msg
	res.Data = ""
	r.Ctx.JSON(http.StatusOK,res)
	r.Ctx.Abort()
}

3,pkg/unittest/httptest.go

package unittest

import (
	"github.com/gin-gonic/gin"
	"net/http/httptest"
)
//map转字符串
func ParseToStr(mp map[string]string) string {
	values := ""
	for key, val := range mp {
		values += "&" + key + "=" + val
	}
	temp := values[1:]
	values = "?" + temp
	return values
}

//get access controller
func Get(uri string, router *gin.Engine) *httptest.ResponseRecorder {
	// 构造get请求
	req := httptest.NewRequest("GET", uri, nil)
	// 初始化响应
	w := httptest.NewRecorder()
	// 调用相应的handler接口
	router.ServeHTTP(w, req)
	return w
}

//post access controller
func PostForm(uri string, param map[string]string, router *gin.Engine) *httptest.ResponseRecorder {
	req := httptest.NewRequest("POST", uri+ParseToStr(param), nil)
	// 初始化响应
	w := httptest.NewRecorder()
	// 调用相应handler接口
	router.ServeHTTP(w, req)
	return w
}

4,router/router.go

package router

import (
	"github.com/gin-gonic/gin"
	"github.com/liuhongdi/gintest01/controller"
	"github.com/liuhongdi/gintest01/global"
	"log"
	"runtime/debug"
)

func Router() *gin.Engine {
	router := gin.Default()
	//处理异常
	router.NoRoute(HandleNotFound)
	router.NoMethod(HandleNotFound)
	router.Use(Recover)

	// 路径映射 ;
	userc:=controller.NewUserController()
	router.GET("/user/get", userc.GetUser);
	router.POST("/user/post", userc.PostUser);

	return router
}

func HandleNotFound(c *gin.Context) {
	global.NewResult(c).Error(404,"资源未找到")
	return
}

func Recover(c *gin.Context) {
	defer func() {
		if r := recover(); r != nil {
			//打印错误堆栈信息
			log.Printf("panic: %v\n", r)
			debug.PrintStack()
			global.NewResult(c).Error(500,"服务器内部错误")
		}
	}()
	//加载完 defer recover，继续后续接口调用
	c.Next()
}

5,main_test.go

package main

import (
	"encoding/json"
	"fmt"
	"github.com/liuhongdi/gintest01/router"
	"github.com/stretchr/testify/assert"
	"io/ioutil"
	"github.com/liuhongdi/gintest01/pkg/unittest"
	"net/http/httptest"
	"testing"
)

type ResultCont struct {
	Code	int  `json:"code"` // 自增
	Msg string  `json:"msg"` //
	Data interface{} `json:"data"`
}

//测试得到用户信息
func TestGet(t *testing.T) {
	globalrouter = router.Router()
	var w *httptest.ResponseRecorder

	urlIndex := "/user/get?uid=3"
	w = unittest.Get(urlIndex, globalrouter)

	assert.Equal(t,200, w.Code)
	//result := w.Body
	body,_ := ioutil.ReadAll(w.Body)

	m:=&ResultCont{}

	err := json.Unmarshal(body, &m)
	if err != nil {

		fmt.Println("Umarshal failed:", err)
		return
	}
	assert.Equal(t,0, m.Code)
	//assert.Equal(t,"abc", m.Msg)
}
//测试post登录
func TestLogin(t *testing.T) {
	globalrouter = router.Router()
	var w *httptest.ResponseRecorder
	//test post
	param := make(map[string]string)
	param["username"] = "username"
	param["password"] = "password"
	urlLogin := "/user/post"
	w = unittest.PostForm(urlLogin, param, globalrouter)
	assert.Equal(t,200, w.Code)
	body,_ := ioutil.ReadAll(w.Body)
	m:=&ResultCont{}

	err := json.Unmarshal(body, &m)
	if err != nil {
		fmt.Println("Umarshal failed:", err)
		return
	}

	if (m.Code != 0){
		t.Fatalf("fail,code:%d,msg:%s",m.Code,m.Msg)
	}
}

四，测试效果

root@ku:/data/go/gintest01# go test -v ./...
=== RUN   TestGet
[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.

[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
 - using env:	export GIN_MODE=release
 - using code:	gin.SetMode(gin.ReleaseMode)

[GIN-debug] GET    /user/get                 --> github.com/liuhongdi/gintest01/controller.(*UserController).GetUser-fm (4 handlers)
[GIN-debug] POST   /user/post                --> github.com/liuhongdi/gintest01/controller.(*UserController).PostUser-fm (4 handlers)
[GIN] 2021/01/26 - 18:05:45 | 200 |      63.747µs |       192.0.2.1 | GET      "/user/get?uid=3"
--- PASS: TestGet (0.00s)
=== RUN   TestLogin
[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.

[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
 - using env:	export GIN_MODE=release
 - using code:	gin.SetMode(gin.ReleaseMode)

[GIN-debug] GET    /user/get                 --> github.com/liuhongdi/gintest01/controller.(*UserController).GetUser-fm (4 handlers)
[GIN-debug] POST   /user/post                --> github.com/liuhongdi/gintest01/controller.(*UserController).PostUser-fm (4 handlers)
[GIN] 2021/01/26 - 18:05:45 | 200 |     118.343µs |       192.0.2.1 | POST     "/user/post?username=username&password=password"
--- PASS: TestLogin (0.00s)
PASS
ok  	github.com/liuhongdi/gintest01	0.011s
?   	github.com/liuhongdi/gintest01/controller	[no test files]
?   	github.com/liuhongdi/gintest01/global	[no test files]
?   	github.com/liuhongdi/gintest01/pkg/unittest	[no test files]
?   	github.com/liuhongdi/gintest01/router	[no test files]

五，查看库的版本

module github.com/liuhongdi/gintest01

go 1.15

require (
	github.com/gin-gonic/gin v1.6.3
	github.com/stretchr/testify v1.6.1
)
更新于 2021-01-26
 接口, 单元测试, Http, Golang, Go
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