edge summary & more tests

lib/fb_graph2/collection.rb

@@ -1,10 +1,11 @@
 module FbGraph2
   class Collection < Array
-    attr_accessor :before, :after, :next, :previous
+    attr_accessor :before, :after, :next, :previous, :order, :total_count
 
     def initialize(collection = [])
       collection = normalize collection
-      setup_pagination collection[:paging]
+      paginate collection[:paging]
+      summarize collection[:summary]
       replace Array(collection[:data])
     end
 
@@ -24,7 +25,7 @@ module FbGraph2
       end
     end
 
-    def setup_pagination(paging)
+    def paginate(paging)
       cursors  = paging.try(:[], :cursors)
       self.before   = cursors.try(:[], :before)
       self.after    = cursors.try(:[], :after)
@@ -32,6 +33,13 @@ module FbGraph2
       self.previous = params_in paging.try(:[], :previous)
     end
 
+    def summarize(summary)
+      # NOTE: notifications edge returns "summary" as a blank Array.
+      summary = Hash(summary)
+      self.order       = summary.try(:[], :order)
+      self.total_count = summary.try(:[], :total_count)
+    end
+
     def params_in(url)
       if url
         Rack::Utils.parse_nested_query(

lib/fb_graph2/edge.rb

@@ -1,6 +1,7 @@
 module FbGraph2
   class Edge < Collection
     attr_accessor :owner, :edge, :params, :options, :collection
+    delegate :order, :total_count, to: :collection
 
     def initialize(owner, edge, params = {}, options = {})
       self.owner = owner

spec/fb_graph2/edge/comments_spec.rb

@@ -41,6 +41,16 @@ describe FbGraph2::Edge::Comments do
           end
         end
       end
+
+      context 'when summary requested' do
+        it 'should be summarized' do
+          comments = mock_graph :get, 'post_id/comments', 'post/comments_with_summary', access_token: 'token' do
+            post.comments
+          end
+          comments.order.should == 'chronological'
+          comments.total_count.should == 4
+        end
+      end
     end
 
     describe '#comment!' do

spec/fb_graph2/edge_spec.rb

@@ -0,0 +1,148 @@
+require 'spec_helper'
+
+describe FbGraph2::Edge do
+  let(:me) { FbGraph2::User.me 'access_token' }
+  let(:post) { FbGraph2::Post.new 'post_id', access_token: 'access_token' }
+  let(:feed) do
+    mock_graph :get, 'me/feed', 'user/feed', access_token: 'access_token' do
+      me.feed
+    end
+  end
+  let(:comments) do
+    mock_graph :get, 'post_id/comments', 'post/comments_with_summary', access_token: 'access_token' do
+      post.comments
+    end
+  end
+
+  describe 'summary' do
+    subject { comments }
+    its(:order) { should == 'chronological' }
+    its(:total_count) { should == 4 }
+  end
+
+  describe 'pagination' do
+    context 'when next/previous-url-based' do
+      describe 'next' do
+        context 'when next page exists' do
+          it 'should fetch next page' do
+            feed.collection.next.should match(limit: '25', until: '1400651347')
+            _next_ = mock_graph :get, 'me/feed', 'blank_collection', access_token: 'access_token', params: {
+              limit: 25,
+              until: '1400651347'
+            } do
+              feed.next
+            end
+            _next_.should be_instance_of FbGraph2::Edge
+          end
+        end
+
+        context 'otherwise' do
+          let(:without_next) do
+            mock_graph :get, 'me/feed', 'blank_collection', access_token: 'access_token', params: {
+              limit: 25,
+              until: '1400651347'
+            } do
+              feed.next
+            end
+          end
+
+          it do
+            without_next.collection.next.should be_blank
+            without_next.next.should be_blank
+          end
+        end
+      end
+
+      describe 'previous' do
+        context 'when previous page exists' do
+          it 'should fetch previous page' do
+            feed.collection.previous.should match(limit: '25', since: '1401410484')
+            previous = mock_graph :get, 'me/feed', 'blank_collection', access_token: 'access_token', params: {
+              limit: 25,
+              since: '1401410484'
+            } do
+              feed.previous
+            end
+            previous.should be_instance_of FbGraph2::Edge
+          end
+        end
+
+        context 'otherwise' do
+          let(:without_previous) do
+            mock_graph :get, 'me/feed', 'blank_collection', access_token: 'access_token', params: {
+              limit: 25,
+              since: '1401410484'
+            } do
+              feed.previous
+            end
+          end
+
+          it do
+            without_previous.collection.previous.should be_blank
+            without_previous.previous.should be_blank
+          end
+        end
+      end
+    end
+
+    context 'when cursors-based' do
+      describe 'next' do
+        context 'when after cursor exists' do
+          it 'should fetch next page' do
+            comments.collection.after.should == 'NA=='
+            _next_ = mock_graph :get, 'post_id/comments', 'blank_collection', access_token: 'access_token', params: {
+              after: 'NA=='
+            } do
+              comments.next
+            end
+            _next_.should be_instance_of FbGraph2::Edge
+          end
+        end
+
+        context 'otherwise' do
+          let(:without_next) do
+            mock_graph :get, 'post_id/comments', 'blank_collection', access_token: 'access_token', params: {
+              after: 'NA=='
+            } do
+              comments.next
+            end
+          end
+
+          it do
+            without_next.collection.after.should be_blank
+            without_next.next.should be_blank
+          end
+        end
+      end
+
+      describe 'previous' do
+        context 'when before cursor exists' do
+          it 'should fetch previous page' do
+            comments.collection.before.should == 'MQ=='
+            previous = mock_graph :get, 'post_id/comments', 'blank_collection', access_token: 'access_token', params: {
+              before: 'MQ=='
+            } do
+              comments.previous
+            end
+            previous.should be_instance_of FbGraph2::Edge
+          end
+        end
+
+        context 'otherwise' do
+          let(:without_previous) do
+            mock_graph :get, 'post_id/comments', 'blank_collection', access_token: 'access_token', params: {
+              before: 'MQ=='
+            } do
+              comments.previous
+            end
+          end
+
+          it do
+            without_previous.collection.before.should be_blank
+            without_previous.previous.should be_blank
+          end
+        end
+      end
+    end
+  end
+end

spec/mock_json/post/comments_with_summary.json

@@ -0,0 +1,57 @@
+{
+  "data": [{
+    "id": "10152662663892277_10152662666892277",
+    "from": {
+      "id": "579612276",
+      "name": "Nov Matake"
+    },
+    "message": "hummm, it's not \"post\"...",
+    "can_remove": true,
+    "created_time": "2014-08-20T05:34:21+0000",
+    "like_count": 0,
+    "user_likes": false
+  }, {
+    "id": "10152662663892277_10152662686952277",
+    "from": {
+      "id": "579612276",
+      "name": "Nov Matake"
+    },
+    "message": "579612276_10152662663892277 = post\n10152662663892277 = status",
+    "can_remove": true,
+    "created_time": "2014-08-20T05:57:11+0000",
+    "like_count": 0,
+    "user_likes": false
+  }, {
+    "id": "10152662663892277_10152662687272277",
+    "from": {
+      "id": "579612276",
+      "name": "Nov Matake"
+    },
+    "message": "でも多分v2.1完成してない。 http://stackoverflow.com/questions/25270649/facebook-graph-api-v2-1-all-post-photos",
+    "can_remove": true,
+    "created_time": "2014-08-20T05:57:31+0000",
+    "like_count": 0,
+    "user_likes": false
+  }, {
+    "id": "10152662663892277_10152662687387277",
+    "from": {
+      "id": "579612276",
+      "name": "Nov Matake"
+    },
+    "message": "完成さしてからだせや！！",
+    "can_remove": true,
+    "created_time": "2014-08-20T05:57:48+0000",
+    "like_count": 0,
+    "user_likes": false
+  }],
+  "paging": {
+    "cursors": {
+      "after": "NA==",
+      "before": "MQ=="
+    }
+  },
+  "summary": {
+    "order": "chronological",
+    "total_count": 4
+  }
+}