Make sure dbr and dbl have plural forms defined, add test.

locale/dbl/LC_MESSAGES/django.po

@@ -11,7 +11,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: \n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "Generated-By: Babel 2.4.0\n"
 
 msgid "No links are allowed."

locale/dbl/LC_MESSAGES/djangojs.po

@@ -11,7 +11,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: \n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "Generated-By: Babel 2.4.0\n"
 
 msgid "{0} star"

locale/dbr/LC_MESSAGES/django.po

@@ -11,7 +11,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: \n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "Generated-By: Babel 2.4.0\n"
 
 msgid "No links are allowed."

locale/dbr/LC_MESSAGES/djangojs.po

@@ -11,7 +11,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: \n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "Generated-By: Babel 2.4.0\n"
 
 msgid "{0} star"

settings_test.py

@@ -89,6 +89,7 @@ AMO_LANGUAGES = (
     'zh-CN', 'zh-TW',
 )
 
+# Make sure we run our tests with debug languages.
 AMO_LANGUAGES = AMO_LANGUAGES + DEBUG_LANGUAGES
 
 LANGUAGES = lazy(lazy_langs, dict)(AMO_LANGUAGES)

src/olympia/amo/tests/test_views.py

@@ -10,6 +10,7 @@ from django.test.utils import override_settings
 
 from lxml import etree
 import mock
+import pytest
 from mock import patch
 from pyquery import PyQuery as pq
 
@@ -23,6 +24,13 @@ from olympia.amo.urlresolvers import reverse
 from olympia.users.models import UserProfile
 
 
+@pytest.mark.django_db
+@pytest.mark.parametrize('locale', list(settings.LANGUAGES))
+def test_locale_switcher(client, locale):
+    response = client.get('/{}/firefox/'.format(locale))
+    assert response.status_code == 200
+
+
 class Test403(TestCase):
     fixtures = ['base/users']
 

src/olympia/lib/settings_base.py

@@ -173,7 +173,7 @@ SHORTER_LANGUAGES = {
 # L10n dashboard.  Generally languages start here and move into AMO_LANGUAGES.
 HIDDEN_LANGUAGES = ('cy', 'hr', 'sr', 'sr-Latn', 'tr')
 
-DEBUG_LANGUAGES = ('dbr', 'dbg')
+DEBUG_LANGUAGES = ('dbr', 'dbl')
 
 
 def lazy_langs(languages):