Allow OPTIONS requests for directory listings

liquor-cabinet.rb

@@ -71,6 +71,10 @@ class LiquorCabinet < Sinatra::Base
     halt 200
   end
 
+  options "/:user/*/" do
+    halt 200
+  end
+
   private
 
   def self.configure_airbrake

spec/directories_spec.rb

@@ -153,6 +153,19 @@ describe "Directories" do
         end
       end
     end
+  end
+
+  describe "OPTIONS listing" do
+    it "has CORS headers set" do
+      options "/jimmy/tasks/"
+
+      last_response.status.must_equal 200
+
+      last_response.headers["Access-Control-Allow-Origin"].must_equal "*"
+      last_response.headers["Access-Control-Allow-Methods"].must_equal "GET, PUT, DELETE"
+      last_response.headers["Access-Control-Allow-Headers"].must_equal "Authorization, Content-Type, Origin"
+    end
+  end
 
   describe "DELETE file" do
     context "last file in directory" do
@@ -174,5 +187,3 @@ describe "Directories" do
   end
 
 end
-
-end