from django.test import TestCase
from django.contrib.auth import get_user_model
from core import models

def sample_user(email='test@londonappdev.com', password='testpass'):
    """Create a sample user"""
    return get_user_model().objects.create_user(email, password)

class ModelTests(TestCase):

    def test_create_user_with_email_successful(self):
        """Test creating a new user with an email is successful"""
        email = "test@londonappdev.com"
        password = "Testpass123"
        user = get_user_model().objects.create_user(email=email, password=password)

        self.assertEqual(user.email, email)
        self.assertTrue(user.check_password(password))

    def test_new_user_email_normalized(self):
        """Test the email for a new user is normalized"""
        email = "test@LONDONAPPDEV.com"
        password = "Testpass123"
        user = get_user_model().objects.create_user(email=email, password=password)

        self.assertEqual(user.email, email.lower())

    def test_new_user_invalid_email(self):
        """Test creating user with no email raises error"""
        with self.assertRaises(ValueError):
            get_user_model().objects.create_user(None, 'test123')

    def test_create_new_superuser(self):
        """Test creating a new superuser"""
        user = get_user_model().objects.create_superuser('test@londonappdev.com', 'test123')

        self.assertTrue(user.is_superuser)
        self.assertTrue(user.is_staff)

    def test_track_str(self):
        """Test the track string representation"""
        track = models.Track.objects.create(
                user=sample_user(),
                name='Sylia'
            )

        self.assertEqual(str(track), track.name)

    def test_genre_str(self):
        """Test the genre string representation"""
        genre = models.Genre.objects.create(
            user=sample_user(),
            name='House'
        )

        self.assertEqual(str(genre), genre.name)
