Improved tests coverage.

tests/settings.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+
 import django
 import os
 
@@ -91,6 +93,15 @@ DATABASES = {
     'default': database_config.get(database_engine),
 }
 
+USE_I18N = True
+LANGUAGES = (
+    ('en', 'English', ),
+    ('it', 'Italian', ),
+)
+LANGUAGE_CODE = 'en'
+
+ROOT_URLCONF = 'tests.urls'
+
 MEDIA_ROOT = os.path.join(BASE_DIR, 'admin_interface/public/media/')
 MEDIA_URL = '/media/'
 

tests/test_fixtures.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+
 from django.core.management import call_command
 from django.test import TestCase
 

tests/test_models.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+
 from django.conf import settings
 from django.test import TestCase
 

tests/test_settings.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+
 import django
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured

tests/test_templatetags.py

@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 
-from django.test import TestCase
+from __future__ import unicode_literals
+
+from django.test import override_settings, TestCase
 from django.test.client import RequestFactory
 from django.template import Context, Template
 
@@ -20,6 +22,63 @@ class AdminInterfaceTemplateTagsTestCase(TestCase):
     def __render_template(self, string, context=None):
         return Template(string).render(Context(context or {}))
 
+    def test_get_admin_interface_languages(self):
+        context = Context({
+            'request': self.request_factory.get('/en/admin/'),
+        })
+        languages = templatetags.get_admin_interface_languages(context)
+        expected_languages = [
+            {'code': 'en', 'name': 'English', 'default': True, 'active': True, 'activation_url': '/i18n/setlang/?next=/en/admin/'},
+            {'code': 'it', 'name': 'Italian', 'default': False, 'active': False, 'activation_url': '/i18n/setlang/?next=/it/admin/'}
+        ]
+        self.assertEqual(len(languages), len(expected_languages))
+        self.assertEqual(languages[0], expected_languages[0])
+        self.assertEqual(languages[1], expected_languages[1])
+
+    @override_settings(
+        USE_I18N = False,
+    )
+    def test_get_admin_interface_languages_with_i18n_disabled(self):
+        context = Context({
+            'request': self.request_factory.get('/en/admin/'),
+        })
+        languages = templatetags.get_admin_interface_languages(context)
+        self.assertEqual(languages, None)
+
+    @override_settings(
+        ROOT_URLCONF = 'tests.urls_without_i18n_patterns',
+    )
+    def test_get_admin_interface_languages_without_i18n_url_patterns(self):
+        context = Context({
+            'request': self.request_factory.get('/en/admin/'),
+        })
+        languages = templatetags.get_admin_interface_languages(context)
+        self.assertEqual(languages, None)
+
+    @override_settings(
+        LANGUAGES = (
+            ('en', 'English'),
+        ),
+    )
+    def test_get_admin_interface_languages_without_multiple_languages(self):
+        context = Context({
+            'request': self.request_factory.get('/en/admin/'),
+        })
+        languages = templatetags.get_admin_interface_languages(context)
+        self.assertEqual(languages, None)
+
+    def test_get_admin_interface_languages_without_request(self):
+        context = Context({})
+        languages = templatetags.get_admin_interface_languages(context)
+        self.assertEqual(languages, None)
+
+    def test_get_admin_interface_languages_without_language_prefix_in_url(self):
+        context = Context({
+            'request': self.request_factory.get('/admin/'),
+        })
+        languages = templatetags.get_admin_interface_languages(context)
+        self.assertEqual(languages, None)
+
     def test_get_theme(self):
         Theme.objects.all().delete()
         context = Context({})

tests/urls.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import unicode_literals
+
+import django
+from django.contrib import admin
+if django.VERSION < (2, 0):
+    from django.conf.urls import include, url as re_path
+else:
+    from django.urls import include, re_path
+from django.conf.urls.i18n import i18n_patterns
+
+
+urlpatterns = []
+urlpatterns += [
+    re_path(r'^i18n/', include('django.conf.urls.i18n')),
+]
+urlpatterns += i18n_patterns(
+    re_path(r'^admin/', admin.site.urls),
+)

tests/urls_without_i18n_patterns.py

@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import unicode_literals
+
+import django
+from django.contrib import admin
+if django.VERSION < (2, 0):
+    from django.conf.urls import url as re_path
+else:
+    from django.urls import re_path
+
+
+urlpatterns = [
+    re_path(r'^admin/', admin.site.urls),
+]