unit-testing - 如何对Gin Gonic中的cookie进行单元测试提取

Question

我正在使用gin gonic。我有一个从cookie中提取 token 的函数，该函数实际上是有效的。我在路由处理程序中使用此功能，并且想测试处理程序功能，但我不知道如何。

函数:

// Extracts token from a cookie
func tokenFromCookie(c *gin.Context, name string) (string, error) {
    token, err := c.Cookie(name)
    if err != nil {
        return "", err
    }

    return token, nil
}

路线:

func RefreshTokenHandler(accessTokenKey string, refreshTokenKey string) gin.HandlerFunc {
fn := func(c *gin.Context) {
    token, err := tokenFromCookie(c, "refresh_token")
    if err != nil {
        _ = c.Error(err).SetMeta(noCookie)
        return
    }
    c.JSON(http.StatusOK, gin.H{
        "token":  token,
    })
})

路线定义:

func CreateRoutes(r *gin.Engine) *gin.Engine {

    r.Use(errorHandler)

    // Auth
    auth := r.Group("/auth")
    {
        auth.GET("/refresh-token", RefreshTokenHandler(accessTokenSignatureKey, refreshTokenSignatureKey))
    }

    return r
}

单元测试:

func TestRefreshTokenHandler(t *testing.T) {
    req, _ := http.NewRequest("GET", "/auth/refresh-token", nil)
    req.AddCookie(&http.Cookie{
        Name: "refresh_token",
        Value:  "token",
        MaxAge:   604800, 
        Expires:  time.Now().Add(time.Hour * 24 * 7),
        Path:     "/",
        Domain:   "127.0.0.1",
        HttpOnly: true,
        SameSite: http.SameSiteNoneMode,
        Secure:   secure
        }
    )

    w := httptest.NewRecorder()
    router.ServeHTTP(w, req)
    got := w.Code
    if gotCode != 200 {
        t.Errorf("GET /auth/refresh-token; got %d, want 200", got)
    }
}

tokenFromCookie()函数会引发错误:

http: named cookie not present

这是我在 gin gonic repo中发现的类似的单元测试:

func TestContextGetCookie(t *testing.T) {
    c, _ := CreateTestContext(httptest.NewRecorder())
    c.Request, _ = http.NewRequest("GET", "/get", nil)
    c.Request.Header.Set("Cookie", "user=gin")
    cookie, _ := c.Cookie("user")
    assert.Equal(t, "gin", cookie)

    _, err := c.Cookie("nokey")
    assert.Error(t, err)
}

但是我不明白为什么我的代码不起作用以及如何重写它。

Answer 1

要查看列表cookie，您可以尝试以下操作:

fmt.Println(c.Request.Cookies())

我不明白创建新函数tokenFromCookie的意义。

func RefreshTokenHandler(accessTokenKey string, refreshTokenKey string) gin.HandlerFunc {
fn := func(c *gin.Context) {
    //token, err := tokenFromCookie(c, "refresh_token")
    token, err := c.Cookie("refresh_token")
    if err != nil {
        _ = c.Error(err).SetMeta(noCookie)
        return
    }
    c.JSON(http.StatusOK, gin.H{
        "token":  token,
    })
})