1 files changed, 26 insertions, 0 deletions
diff --git a/railties/test/application/middleware/best_practices_test.rb b/railties/test/application/middleware/best_practices_test.rb
new file mode 100644
index 0000000000..5b722e7510
--- /dev/null
+++ b/railties/test/application/middleware/best_practices_test.rb
@@ -0,0 +1,26 @@
+require 'isolation/abstract_unit'
+
+module ApplicationTests
+  class BestPracticesTest < Test::Unit::TestCase
+    include ActiveSupport::Testing::Isolation
+
+    def setup
+      build_app
+      boot_rails
+      require 'rack/test'
+      extend Rack::Test::Methods
+      simple_controller
+    end
+
+    test "simple controller in production mode returns best standards" do
+      get '/foo'
+      assert_equal "IE=Edge,chrome=1", last_response.headers["X-UA-Compatible"]
+    end
+
+    test "simple controller in development mode leaves out Chrome" do
+      app("development")
+      get "/foo"
+      assert_equal "IE=Edge", last_response.headers["X-UA-Compatible"]
+    end
+  end
+end