Fixed #22404 -- Added a view that exposes i18n catalog as a JSON

Added django.views.i18n.json_catalog() view, which returns a JSON
response containing translations, formats, and a plural expression
for the specified language.

2 files changed, 30 insertions, 0 deletions

diff --git a/tests/view_tests/tests/test_i18n.py b/tests/view_tests/tests/test_i18n.py
index 886c10f5fc..a10a3bc7e1 100644
--- a/tests/view_tests/tests/test_i18n.py
+++ b/tests/view_tests/tests/test_i18n.py
@@ -105,6 +105,20 @@ class I18NTests(TestCase):
                     # Message with context (msgctxt)
                     self.assertContains(response, '"month name\\u0004May": "mai"', 1)
 
+    def test_jsoni18n(self):
+        """
+        The json_catalog returns the language catalog and settings as JSON.
+        """
+        with override('de'):
+            response = self.client.get('/jsoni18n/')
+            data = json.loads(response.content.decode('utf-8'))
+            self.assertIn('catalog', data)
+            self.assertIn('formats', data)
+            self.assertIn('plural', data)
+            self.assertEqual(data['catalog']['month name\x04May'], 'Mai')
+            self.assertIn('DATETIME_FORMAT', data['formats'])
+            self.assertEqual(data['plural'], '(n != 1)')
+
 
 @override_settings(ROOT_URLCONF='view_tests.urls')
 class JsI18NTests(SimpleTestCase):
@@ -127,6 +141,21 @@ class JsI18NTests(SimpleTestCase):
             response = self.client.get('/jsi18n/')
             self.assertNotContains(response, 'esto tiene que ser traducido')
 
+    def test_jsoni18n_with_missing_en_files(self):
+        """
+        Same as above for the json_catalog view. Here we also check for the
+        expected JSON format.
+        """
+        with self.settings(LANGUAGE_CODE='es'), override('en-us'):
+            response = self.client.get('/jsoni18n/')
+            data = json.loads(response.content.decode('utf-8'))
+            self.assertIn('catalog', data)
+            self.assertIn('formats', data)
+            self.assertIn('plural', data)
+            self.assertEqual(data['catalog'], {})
+            self.assertIn('DATETIME_FORMAT', data['formats'])
+            self.assertIsNone(data['plural'])
+
     def test_jsi18n_fallback_language(self):
         """
         Let's make sure that the fallback language is still working properly
diff --git a/tests/view_tests/urls.py b/tests/view_tests/urls.py
index 4215a4b26a..e8f2855c98 100644
--- a/tests/view_tests/urls.py
+++ b/tests/view_tests/urls.py
@@ -84,6 +84,7 @@ urlpatterns = [
     url(r'^jsi18n_admin/$', i18n.javascript_catalog, js_info_dict_admin),
     url(r'^jsi18n_template/$', views.jsi18n),
     url(r'^jsi18n_multi_catalogs/$', views.jsi18n_multi_catalogs),
+    url(r'^jsoni18n/$', i18n.json_catalog, js_info_dict),
 
     # Static views
     url(r'^site_media/(?P<path>.*)$', static.serve, {'document_root': media_dir}),