test_authentication.py

from authors.apps.authentication.models import User
from django.test import TestCase
from rest_framework import status

class LoginTest(TestCase):
    def setUp(self):
        self.user = User(email = "david@gmail.com", username = "davie", password = "12345678")
        self.user.save()
    
    def test_login_without_password(self):
        response = self.client.post('users/login', data=dict(email="david@gmail.com", password = ""))
        return self.assertIn("A password is required to log in.", str(response.data))
        return self.assertEqual(request.status_code, status.HTTP_400_BAD_REQUEST)