tests to the news manifest options

tests/test_settings_attr.py

@@ -14,7 +14,9 @@ class AppSettingsTest(TestCase):
             'PWA_APP_BACKGROUND_COLOR',
             'PWA_APP_DISPLAY',
             'PWA_APP_START_URL',
-            'PWA_APP_ICONS'
+            'PWA_APP_ICONS',
+            'PWA_APP_DIR',
+            'PWA_APP_LANG'
         ]
         for attr in attributes:
             with self.subTest():

tests/test_view.py

@@ -34,6 +34,8 @@ class ManifestTest(TestCase):
             '"background_color":',
             '"theme_color":',
             '"icons":',
+            '"dir":',
+            '"lang":'
         ]
         for expected in contents:
             with self.subTest():