如何在Django中测试PasswordChangeView？

from django.contrib.auth.models import User
from django.test import TestCase, Client
from django.urls import reverse
from django.contrib.auth.views import PasswordChangeView

class PasswordChangeViewTest(TestCase):
    def setUp(self):
        self.client = Client()
        self.user = User.objects.create_user(username='testuser', password='testpassword')
        self.client.login(username='testuser', password='testpassword')

    def test_password_change_view(self):
        url = reverse('password_change')
        response = self.client.get(url)
        self.assertEqual(response.status_code, 200)
        self.assertTemplateUsed(response, 'registration/password_change_form.html')

        data = {
            'old_password': 'testpassword',
            'new_password1': 'newtestpassword',
            'new_password2': 'newtestpassword'
        }
        response = self.client.post(url, data)
        self.assertEqual(response.status_code, 302)
        self.assertRedirects(response, reverse('password_change_done'))

        # 确认密码已更改
        self.user.refresh_from_db()
        self.assertTrue(self.user.check_password('newtestpassword'))