Added API#set_app_restrictions convenience method, which handles the …

…non-standard JSON-encoding for that call.

lib/koala/graph_api.rb

@@ -190,6 +190,9 @@ def get_comments_for_urls(urls = [], args = {}, options = {})
         args.merge!(:ids => urls.respond_to?(:join) ? urls.join(",") : urls)
         get_object("comments", args, options)
       end
+      def set_app_restrictions(app_id, restrictions_hash, args = {}, options = {})
+        graph_call(app_id, args.merge(:restrictions => MultiJson.encode(restrictions_hash)), "post", options)
+      end
 
       # GraphCollection support
       def get_page(params)

spec/fixtures/mock_facebook_responses.yml

@@ -290,6 +290,12 @@ graph_api:
         <<: *token_required
         with_token: '{"access_token": "<%= APP_ACCESS_TOKEN %>"}'
 
+
+  '/<%= APP_ID %>':
+    restrictions=<%= MultiJson.encode({"age_distr" => "13+"}) %>:
+      post:
+        with_token: "true"
+
   # -- OAuth responses --
   /oauth/access_token:
     client_id=<%= APP_ID %>&client_secret=<%= SECRET %>&code=<%= OAUTH_CODE %>&redirect_uri=<%= OAUTH_DATA["callback_url"] %>:

spec/support/graph_api_shared_examples.rb

@@ -344,6 +344,33 @@
     # we can't test this live since test users (or random real users) can't be guaranteed to have pages to manage
     @api.should_receive(:api).with("my_page", {:fields => "access_token"}, "get", anything)
     @api.get_page_access_token("my_page")
+  describe "#set_app_restrictions" do
+    before :all do
+      oauth = Koala::Facebook::OAuth.new(KoalaTest.app_id, KoalaTest.secret)
+      app_token = oauth.get_app_access_token
+      @app_api = Koala::Facebook::API.new(app_token)
+      @restrictions = {"age_distr" => "13+"}
+    end
+
+    it "makes a POST to /app_id" do
+      @app_api.should_receive(:graph_call).with(KoalaTest.app_id, anything, "post", anything)
+      @app_api.set_app_restrictions(KoalaTest.app_id, @restrictions)
+    end
+
+    it "JSON-encodes the restrictions" do
+      @app_api.should_receive(:graph_call).with(anything, hash_including(:restrictions => MultiJson.encode(@restrictions)), anything, anything)
+      @app_api.set_app_restrictions(KoalaTest.app_id, @restrictions)
+    end
+
+    it "includes the other arguments" do
+      args = {:a => 2}
+      @app_api.should_receive(:graph_call).with(anything, hash_including(args), anything, anything)
+      @app_api.set_app_restrictions(KoalaTest.app_id, @restrictions, args)
+    end
+
+    it "works" do
+      @app_api.set_app_restrictions(KoalaTest.app_id, @restrictions).should be_true
+    end
   end
 
   # test all methods to make sure they pass data through to the API