from django.test import TestCase
from django.urls import reverse
from rest_framework import status
from rest_framework.test import APITestCase, APIClient

from smartpicasso.app.user.models import User
from smartpicasso.app.user.serializers import UserLoginSerializer
from rest_framework import serializers


class UserApiTest(APITestCase):
    client = APIClient()

    def test_login_when_user_non_exist(self):
        url = reverse('authenticate')
        response = self.client.post(url, {'email': 'non-exist', 'password': '123'}, format='json')
        assert response.status_code == 400

    def test_login_when_user_exist(self):
        User.objects.create_user(email='test@test.com', password='test')
        url = reverse('authenticate')
        response = self.client.post(url, {'email': 'test@test.com', 'password': 'test'}, format='json')
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(response.data['success'], 'True')
        self.assertIn('token', response.data)


class UserTest(TestCase):

    def test_user_str(self):
        email = 'test@test.com'
        user = User.objects.create_user(email=email, password='test')
        self.assertEqual(str(user), email)


class UserLoginSerializerTest(TestCase):
    serializer = UserLoginSerializer()

    def test_validate_wrong_credentials(self):
        data = {'email': 'test@test.com', 'password': '123'}
        self.assertRaises(serializers.ValidationError, self.serializer.validate, data)

    def test_validate_success(self):
        User.objects.create_user(email='test@test.com', password='test')
        data = {'email': 'test@test.com', 'password': 'test'}
        result = self.serializer.validate(data)
        self.assertEqual(result['email'], 'test@test.com')
        self.assertIn('token', result)