old_contents: 
  
  def test_custom_model_pages(request_client, user_create):
      user = user_create(superuser=True)
      client = request_client(user=user)
  
      response = client.get('/admin/admin/')
      assert '/admin/admin/mypage2/' in response.rendered_content
      assert '/admin/admin/mypage1/' in response.rendered_content
  
      response = client.get('/admin/admin/mypage2/')
      assert 'Put data here' in response.rendered_content
  
      response = client.post('/admin/admin/mypage2/', data={'my_another_field': 'hohoho'}, follow=True)
      assert 'Test2:hohoho' in response.rendered_content
  
      response = client.post('/admin/admin/mypage1/', data={'my_field': '1234'}, follow=True)
      assert 'Test1:1234' in response.rendered_content
      assert 'Done.' in response.rendered_content
  
new_contents: from django.contrib import admin
  
  from etc.admin import admins
  
  from etc.tests.testapp.admin import MyPage1, MyCustomPageModelAdmin, MyPage2
  
  def test_custom_model_pages(request_client, user_create):
      user = user_create(superuser=True)
      client = request_client(user=user)
  
      response = client.get('/admin/admin/')
      assert '/admin/admin/mypage2/' in response.rendered_content
      assert '/admin/admin/mypage1/' in response.rendered_content
  
      response = client.get('/admin/admin/mypage2/')
      assert 'Put data here' in response.rendered_content
  
      response = client.post('/admin/admin/mypage2/', data={'my_another_field': 'hohoho'}, follow=True)
      assert 'Test2:hohoho' in response.rendered_content
  
      response = client.post('/admin/admin/mypage1/', data={'my_field': '1234'}, follow=True)
      assert 'Test1:1234' in response.rendered_content
      assert 'Done.' in response.rendered_content
  
  
  class TestCustomModelAdminPages:
  
      def test_custom_model_admin_page(self):
  
          assert admin.site._registry[MyPage1].__class__ == MyCustomPageModelAdmin
  
          assert admin.site._registry[MyPage2].__class__ == admins.CustomPageModelAdmin
  
subject: test cases