test_language_go: update for HOMEBREW_DEVELOPER odie

Closes #488.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

Library/Homebrew/test/test_language_go.rb

@@ -5,7 +5,11 @@ require "language/go"
 
 class LanguageGoTests < Homebrew::TestCase
   def test_stage_deps_empty
-    Language::Go.expects(:opoo).once
+    if ARGV.homebrew_developer?
+      Language::Go.expects(:odie).once
+    else
+      Language::Go.expects(:opoo).once
+    end
     mktmpdir do |path|
       shutup { Language::Go.stage_deps [], path }
     end