Supongamos que tenemos unos endpoints hechos con echo:
package handler
import (
"net/http"
"github.com/labstack/echo/v4"
)
type (
User struct {
Name string `json:"name" form:"name"`
Email string `json:"email" form:"email"`
}
handler struct {
db map[string]*User
}
)
func (h *handler) createUser(c echo.Context) error {
u := new(User)
if err := c.Bind(u); err != nil {
return err
}
return c.JSON(http.StatusCreated, u)
}
func (h *handler) getUser(c echo.Context) error {
email := c.Param("email")
user := h.db[email]
if user == nil {
return echo.NewHTTPError(http.StatusNotFound, "user not found")
}
return c.JSON(http.StatusOK, user)
}
Lo que queremos hacer es un test de unidad que testee este comportamiento, y podemos hacerlo así:
package handler
import (
"net/http"
"net/http/httptest"
"strings"
"testing"
"github.com/labstack/echo/v4"
"github.com/stretchr/testify/assert"
)
var (
mockDB = map[string]*User{
"jon@labstack.com": &User{"Jon Snow", "jon@labstack.com"},
}
userJSON = `{"name":"Jon Snow","email":"jon@labstack.com"}`
)
func TestCreateUser(t *testing.T) {
// Setup
e := echo.New()
req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
req.Header.Set(echo.HeaderContentType, echo.MIMEApplicationJSON)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
h := &handler{mockDB}
// Assertions
if assert.NoError(t, h.createUser(c)) {
assert.Equal(t, http.StatusCreated, rec.Code)
assert.Equal(t, userJSON, rec.Body.String())
}
}
func TestGetUser(t *testing.T) {
// Setup
e := echo.New()
req := httptest.NewRequest(http.MethodGet, "/", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
c.SetPath("/users/:email")
c.SetParamNames("email")
c.SetParamValues("jon@labstack.com")
h := &handler{mockDB}
// Assertions
if assert.NoError(t, h.getUser(c)) {
assert.Equal(t, http.StatusOK, rec.Code)
assert.Equal(t, userJSON, rec.Body.String())
}
}
Y listo!!
Dejo link: https://echo.labstack.com/docs/testing
