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 = req

test.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/