Fixed #17419 -- Added json_tag template filter.

1 files changed, 24 insertions, 2 deletions

diff --git a/tests/utils_tests/test_html.py b/tests/utils_tests/test_html.py
index e6d1fe9a59..e2ebce4556 100644
--- a/tests/utils_tests/test_html.py
+++ b/tests/utils_tests/test_html.py
@@ -4,8 +4,8 @@ from datetime import datetime
 from django.test import SimpleTestCase
 from django.utils.functional import lazystr
 from django.utils.html import (
-    conditional_escape, escape, escapejs, format_html, html_safe, linebreaks,
-    smart_urlquote, strip_spaces_between_tags, strip_tags,
+    conditional_escape, escape, escapejs, format_html, html_safe, json_script,
+    linebreaks, smart_urlquote, strip_spaces_between_tags, strip_tags,
 )
 from django.utils.safestring import mark_safe
 
@@ -147,6 +147,28 @@ class TestUtilsHtml(SimpleTestCase):
                 self.check_output(escapejs, value, output)
                 self.check_output(escapejs, lazystr(value), output)
 
+    def test_json_script(self):
+        tests = (
+            # "<", ">" and "&" are quoted inside JSON strings
+            (('&<>', '<script id="test_id" type="application/json">"\\u0026\\u003C\\u003E"</script>')),
+            # "<", ">" and "&" are quoted inside JSON objects
+            (
+                {'a': '<script>test&ing</script>'},
+                '<script id="test_id" type="application/json">'
+                '{"a": "\\u003Cscript\\u003Etest\\u0026ing\\u003C/script\\u003E"}</script>'
+            ),
+            # Lazy strings are quoted
+            (lazystr('&<>'), '<script id="test_id" type="application/json">"\\u0026\\u003C\\u003E"</script>'),
+            (
+                {'a': lazystr('<script>test&ing</script>')},
+                '<script id="test_id" type="application/json">'
+                '{"a": "\\u003Cscript\\u003Etest\\u0026ing\\u003C/script\\u003E"}</script>'
+            ),
+        )
+        for arg, expected in tests:
+            with self.subTest(arg=arg):
+                self.assertEqual(json_script(arg, 'test_id'), expected)
+
     def test_smart_urlquote(self):
         items = (
             ('http://öäü.com/', 'http://xn--4ca9at.com/'),