from unittest import mock

from django.core import mail
from django.core.exceptions import ValidationError
from django.test import TestCase

from oscar.apps.customer.forms import EmailUserCreationForm, PasswordResetForm
from oscar.test.factories import UserFactory


class TestEmailUserCreationForm(TestCase):

    @mock.patch('oscar.apps.customer.forms.validate_password')
    def test_validator_passed_populated_user(self, mocked_validate):
        mocked_validate.side_effect = ValidationError('That password is rubbish')

        form = EmailUserCreationForm(data={'email': 'terry@boom.com', 'password1': 'terry', 'password2': 'terry'})
        self.assertFalse(form.is_valid())

        mocked_validate.assert_called_once_with('terry', form.instance)
        self.assertEqual(mocked_validate.call_args[0][1].email, 'terry@boom.com')
        self.assertEqual(form.errors['password2'], ['That password is rubbish'])


class TestPasswordResetForm(TestCase):

    def test_user_email_unicode_collision(self):
        # Regression test for CVE-2019-19844, which Oscar's PasswordResetForm
        # was vulnerable to because it had overridden the save() method.
        UserFactory(username='mike123', email='mike@example.org')
        UserFactory(username='mike456', email='mıke@example.org')
        form = PasswordResetForm({'email': 'mıke@example.org'})
        self.assertTrue(form.is_valid())
        form.save()
        self.assertEqual(len(mail.outbox), 1)
        self.assertEqual(mail.outbox[0].to, ['mıke@example.org'])