From 87299af22547093a4efb9c4a5e06b55bb51f9ff7 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Wed, 21 Sep 2016 21:56:59 +0200
Subject: [PATCH] Add test for `language` stanza.

---
 Library/Homebrew/cask/test/cask/dsl_test.rb | 33 +++++++++++++++++++++
 Library/Homebrew/os/mac.rb                  |  6 +++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/cask/test/cask/dsl_test.rb b/Library/Homebrew/cask/test/cask/dsl_test.rb
index ccf2f1a248..96095ed70b 100644
--- a/Library/Homebrew/cask/test/cask/dsl_test.rb
+++ b/Library/Homebrew/cask/test/cask/dsl_test.rb
@@ -122,6 +122,39 @@ describe Hbc::DSL do
     end
   end
 
+  describe "language stanza" do
+    after(:each) do
+      ENV["HOMEBREW_LANGUAGES"] = nil
+    end
+
+    it "allows multilingual casks" do
+      cask = lambda {
+        Hbc::Cask.new("cask-with-apps") do
+          language "FIRST_LANGUAGE" do
+            :first
+          end
+
+          language %r{SECOND_LANGUAGE} do
+            :second
+          end
+
+          language :default do
+            :default
+          end
+        end
+      }
+
+      ENV["HOMEBREW_LANGUAGES"] = "FIRST_LANGUAGE"
+      cask.call.language.must_equal :first
+
+      ENV["HOMEBREW_LANGUAGES"] = "SECOND_LANGUAGE"
+      cask.call.language.must_equal :second
+
+      ENV["HOMEBREW_LANGUAGES"] = "THIRD_LANGUAGE"
+      cask.call.language.must_equal :default
+    end
+  end
+
   describe "app stanza" do
     it "allows you to specify app stanzas" do
       cask = Hbc::Cask.new("cask-with-apps") do
diff --git a/Library/Homebrew/os/mac.rb b/Library/Homebrew/os/mac.rb
index 566f409930..854d39174c 100644
--- a/Library/Homebrew/os/mac.rb
+++ b/Library/Homebrew/os/mac.rb
@@ -42,7 +42,11 @@ module OS
     end
 
     def languages
-      @languages ||= Utils.popen_read("defaults", "read", ".GlobalPreferences", "AppleLanguages").scan(/[^ \n"(),]+/)
+      if ENV["HOMEBREW_LANGUAGES"]
+        ENV["HOMEBREW_LANGUAGES"].split(",")
+      else
+        @languages ||= Utils.popen_read("defaults", "read", ".GlobalPreferences", "AppleLanguages").scan(/[^ \n"(),]+/)
+      end
     end
 
     def language