GetByUsername(username string)

mongo_test.go

package mongo_test

import (
  "log"
  "testing"
  "go_rest_api/pkg"
  "go_rest_api/pkg/mongo"
)


const (
  mongoUrl = "localhost:27017"
  dbName = "test_db"
  userCollectionName = "user"
)

func Test_UserService(t *testing.T) {
  t.Run("CreateUser", createUser_should_insert_user_into_mongo)
}

func createUser_should_insert_user_into_mongo(t *testing.T) {
  //Arrange
  session, err := mongo.NewSession(mongoUrl)
  if(err != nil) {
    log.Fatalf("Unable to connect to mongo: %s", err)
  }
  defer session.Close()
  userService := mongo.NewUserService(session.Copy(), dbName, userCollectionName)

  testUsername := "integration_test_user"
  testPassword := "integration_test_password"
  user := root.User{
    Username: testUsername,
    Password: testPassword }

  //Act
  err = userService.Create(&user)

  //Assert
  if(err != nil) {
    t.Error("Unable to create user: %s", err)
  }
  var results []root.User
  session.GetCollection(dbName,userCollectionName).Find(nil).All(&results)

  count := len(results)
  if(count != 1) {
    t.Error("Incorrect number of results. Expected `1`, got: `%i`", count)
  }
  if(results[0].Username != user.Username) {
    t.Error("Incorrect Username. Expected `%s`, Got: `%s`", testUsername, results[0].Username)
  }
}