import json

from django.template.loader import render_to_string

from django.test import SimpleTestCase

class TestTemplates(SimpleTestCase):

    def test_javascript_escaping(self):

        context = {

            "inline_admin_formset": {

                "inline_formset_data": json.dumps(

                    {

                        "formset": {"prefix": "my-prefix"},

                        "opts": {"verbose_name": "verbose name\\"},

                    }

                ),

            },

        }

        output = render_to_string("admin/edit_inline/stacked.html", context)

        self.assertIn(""prefix": "my-prefix"", output)

        self.assertIn(""verbose_name": "verbose name\\\\"", output)

        output = render_to_string("admin/edit_inline/tabular.html", context)

        self.assertIn(""prefix": "my-prefix"", output)

        self.assertIn(""verbose_name": "verbose name\\\\"", output)