Build the locale path with an `_` instead of a `-`

The locale code is turned into an asset path with an underscore
instead of a dash.

The language codes are transformed by `I18n.locale` into a code with a
dash. But the resources for translating are always stored in a path
using a `_` separating the language and the region code.

1 files changed, 8 insertions, 0 deletions

diff --git a/spec/helpers/application_helper_spec.rb b/spec/helpers/application_helper_spec.rb
index 87ae1fa5660..66785cf32da 100644
--- a/spec/helpers/application_helper_spec.rb
+++ b/spec/helpers/application_helper_spec.rb
@@ -309,4 +309,12 @@ describe ApplicationHelper do
       end
     end
   end
+
+  describe '#locale_path' do
+    it 'returns the locale path with an `_`' do
+      Gitlab::I18n.locale = 'pt-BR'
+
+      expect(helper.locale_path).to include('assets/locale/pt_BR/app')
+    end
+  end
 end