为什么 gin SetCookie 添加新的 cookie 但不更改旧的？

Question

我正在尝试在有ctx.SetCookie方法的地方测试注销处理程序：func (a *authController) Logout(ctx *gin.Context) {    refreshToken, err := ctx.Cookie("refresh_token")    ...    ctx.SetCookie("access_token", "", -1, "/", "localhost", false, true)    ctx.SetCookie("refresh_token", "", -1, "/", "localhost", false, true)    ctx.SetCookie("logged_in", "", -1, "/", "localhost", false, true)    ctx.JSON(http.StatusOK, gin.H{"status": "success"})}测试函数中的代码：recorder := httptest.NewRecorder()ctx, _ := gin.CreateTestContext(recorder)ctx.SetCookie("logged_in", "truee", 60*60, "/", "localhost", false, false)req, _ := http.NewRequest("GET", "/logout", nil)http.SetCookie(recorder, &http.Cookie{Name: "refresh_token", Value: "encodedRefreshToken", MaxAge: 60 * 60, Path: "/", Domain: "localhost", Secure: false, HttpOnly: true}})http.SetCookie(recorder, &http.Cookie{Name: "access_token", Value: "encodedAccessToken", MaxAge: 60 * 60, Path: "/", Domain: "localhost", Secure: false, HttpOnly: true})req.Header = http.Header{"Cookie": recorder.Result().Header["Set-Cookie"]}ctx.Request = reqtest.mock()authController.Logout(ctx)通话结束后，我正在尝试检查 cookie 是否已被删除：coockies := recorder.Result().Cookies()for _, c := range coockies {    if c.Name == "access_token" {        assert.Equal(t, "", c.Value)    }    ...}而且我遇到这样一个问题，setCookie 不更改 cookie，而是添加新的。也就是调用这个方法后，我有两对cookies和access Token等。结果，测试没有通过。我不明白我做错了什么，能以某种方式解决吗？还是应该这样？

Answer 1

用于AddCookie为 设置 cookie recorder。

我认为你应该Logout像这样测试处理程序：

package ${your_package}

import (

    "encoding/json"

    "net/http"

    "net/http/httptest"

    "testing"

    "github.com/gin-gonic/gin"

    "github.com/stretchr/testify/assert"

)

func Logout(ctx *gin.Context) {

    // refreshToken, err := ctx.Cookie("refresh_token")

    ctx.SetCookie("access_token", "", -1, "/", "localhost", false, true)

    ctx.SetCookie("refresh_token", "", -1, "/", "localhost", false, true)

    ctx.SetCookie("logged_in", "", -1, "/", "localhost", false, true)

    ctx.JSON(http.StatusOK, gin.H{"status": "success"})

}

func setupRouter() *gin.Engine {

    r := gin.Default()

    r.GET("/logout", Logout)

    return r

}

func TestLogout(t *testing.T) {

    w := httptest.NewRecorder()

    r := setupRouter()

    req, err := http.NewRequest("GET", "/logout", nil)

    assert.Nil(t, err)

    req.AddCookie(&http.Cookie{Name: "refresh_token", Value: "encodedRefreshToken", MaxAge: 60 * 60, Path: "/", Domain: "localhost", Secure: false, HttpOnly: true})

    req.AddCookie(&http.Cookie{Name: "access_token", Value: "encodedAccessToken", MaxAge: 60 * 60, Path: "/", Domain: "localhost", Secure: false, HttpOnly: true})

    r.ServeHTTP(w, req)

    for _, v := range w.Result().Cookies() {

        if v.Name == "access_token" {

            assert.Equal(t, "", v.Value)

        }

    }

    assert.Equal(t, http.StatusOK, w.Code)

    respBody := &gin.H{}

    err = json.Unmarshal(w.Body.Bytes(), respBody)

    assert.Nil(t, err)

    assert.Equal(t, gin.H{"status": "success"}, *respBody)

}

=== RUN   TestLogout

[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    /logout                   --> app.Logout (3 handlers)

[GIN] 2022/09/19 - 10:46:00 | 200 |          81µs |                 | GET      "/logout"

--- PASS: TestLogout (0.00s)

PASS

参考： https: //gin-gonic.com/docs/testing/