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 sucessful"""
        email = "test@cja-tech.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@CJA-TECH.COM'
        user = get_user_model().objects.create_user(
            email=email,
            password="junk",
        )

        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(
                email=None,
                password="junk",
            )

    def test_create_new_superuser_(self):
        """Test creating a new superuser"""
        user = get_user_model().objects.create_superuser(
            email="test@cja-tech.com",
            password="junk",
        )
        self.assertTrue(user.is_superuser)
        self.assertTrue(user.is_staff)

    def test_tag_str(self):
        """Test tag string representation"""
        tag = models.Tag.objects.create(
            user=sample_user(),
            name="Vegan",
        )

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

    def test_ingredient_str(self):
        """Test the ingredient string representation"""
        ingredient = models.Ingredient.objects.create(
            user=sample_user(),
            name='Cucumber',
        )

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

