golang-lib/web/webtest/main.go

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package webtest
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"net/http/httptest"
"strings"
"github.com/gin-gonic/gin"
"dev.sum7.eu/genofire/golang-lib/database"
"dev.sum7.eu/genofire/golang-lib/mailer"
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"dev.sum7.eu/genofire/golang-lib/web"
)
var (
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// DBConnection - url to database on setting up default WebService for webtest
DBConnection = "user=root password=root dbname=defaultdb host=localhost port=26257 sslmode=disable"
)
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type testServer struct {
DB *database.Database
Mails chan *mailer.TestingMail
Close func()
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gin *gin.Engine
ws *web.Service
lastCookies []*http.Cookie
}
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// Login Request format (maybe just internal usage)
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type Login struct {
Username string `json:"username"`
Password string `json:"password"`
}
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// New starts WebService for testing
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func New() (*testServer, error) {
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// db setup
dbConfig := database.Database{
Connection: DBConnection,
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Testdata: true,
Debug: false,
LogLevel: 0,
}
err := dbConfig.Run()
if err != nil && err != database.ErrNothingToMigrate {
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return nil, err
}
if dbConfig.DB == nil {
return nil, database.ErrNotConnected
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}
// api setup
gin.EnableJsonDecoderDisallowUnknownFields()
gin.SetMode(gin.TestMode)
mock, mail := mailer.NewFakeServer()
err = mail.Setup()
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if err != nil {
return nil, err
}
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ws := &web.Service{
DB: dbConfig.DB,
Mailer: mail,
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}
ws.Session.Name = "mysession"
ws.Session.Secret = "hidden"
r := gin.Default()
ws.LoadSession(r)
ws.Bind(r)
return &testServer{
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DB: &dbConfig,
Mails: mock.Mails,
Close: mock.Close,
gin: r,
ws: ws,
}, nil
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}
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// DatabaseForget, to run a test without a database
func (s *testServer) DatabaseForget() {
s.ws.DB = nil
s.DB = nil
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}
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// Request sends a request to webtest WebService
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func (s *testServer) Request(method, url string, body interface{}, expectCode int, jsonObj interface{}) error {
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var jsonBody io.Reader
if body != nil {
if strBody, ok := body.(string); ok {
jsonBody = strings.NewReader(strBody)
} else {
jsonBodyArray, err := json.Marshal(body)
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if err != nil {
return err
}
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jsonBody = bytes.NewBuffer(jsonBodyArray)
}
}
req, err := http.NewRequest(method, url, jsonBody)
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if err != nil {
return err
}
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if len(s.lastCookies) > 0 {
for _, c := range s.lastCookies {
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req.AddCookie(c)
}
}
w := httptest.NewRecorder()
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s.gin.ServeHTTP(w, req)
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// valid statusCode
if expectCode != w.Code {
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return fmt.Errorf("wrong status code, body: %v", w.Body)
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}
if jsonObj != nil {
// fetch JSON
err = json.NewDecoder(w.Body).Decode(jsonObj)
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if err != nil {
return err
}
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}
result := w.Result()
if result != nil {
cookies := result.Cookies()
if len(cookies) > 0 {
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s.lastCookies = cookies
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}
}
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return nil
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}
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// Login to API by send request
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func (s *testServer) Login(login Login) error {
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// POST: correct login
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return s.Request(http.MethodPost, "/api/v1/auth/login", &login, http.StatusOK, nil)
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}
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// TestLogin to API by default login data
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func (s *testServer) TestLogin() error {
return s.Login(Login{
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Username: "admin",
Password: "CHANGEME",
})
}