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054a310e70
Signed-off-by: Vishal Rana <vr@labstack.com>
3.0 KiB
3.0 KiB
+++ title = "Testing" description = "Testing handler and middleware in Echo" [menu.main] name = "Testing" parent = "guide" weight = 9 +++
Testing Handler
GET
/users/:id
Handler below retrieves user by id from the database. If user is not found it returns
404
error with a message.
CreateUser
POST
/users
- Accepts JSON payload
- On success
201 - Created
- On error
500 - Internal Server Error
GetUser
GET
/users/:email
- On success
200 - OK
- On error
404 - Not Found
if user is not found otherwise500 - Internal Server Error
handler.go
package handler
import (
"net/http"
"github.com/labstack/echo"
)
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)
}
handler_test.go
package handler
import (
"net/http"
"net/http/httptest"
"strings"
"testing"
"github.com/labstack/echo"
"github.com/labstack/echo/engine/standard"
"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, err := http.NewRequest(echo.POST, "/users", strings.NewReader(userJSON))
if assert.NoError(t, err) {
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 := new(http.Request)
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())
}
}
Using Form Payload
f := make(url.Values)
f.Set("name", "Jon Snow")
f.Set("email", "jon@labstack.com")
req, err := http.NewRequest(echo.POST, "/", strings.NewReader(f.Encode()))
Setting Path Params
c.SetParamNames("id", "email")
c.SetParamValues("1", "jon@labstack.com")
Setting Query Params
q := make(url.Values)
q.Set("email", "jon@labstack.com")
req, err := http.NewRequest(echo.POST, "/?"+q.Encode(), nil)
Testing Middleware
TBD
You can looking to built-in middleware test cases.