Add test for channel_section model

Author: kangkyu

spec/models/channel_section_spec.rb

@@ -0,0 +1,13 @@
+require 'spec_helper'
+require 'yt/models/channel_section'
+
+describe Yt::ChannelSection do
+  subject(:channel_section) { Yt::ChannelSection.new attrs }
+
+  describe '#position' do
+    context 'given fetching a channel_section returns a snippet' do
+      let(:attrs) { {snippet: {"title"=>"New Section", "position"=>0}} }
+      it { expect(channel_section.position).to eq 0 }
+    end
+  end
+end