collections now use a shared_example to get a list

spec/acceptance/collections_spec.rb

 require 'acceptance_helpers'
+require 'shared/examples'
 
 resource 'Collections' do
   header 'Accept', 'application/json'
@@ -6,25 +7,26 @@ resource 'Collections' do
 
   before { 12.times { create(:collection) } }
 
+  it_behaves_like "get a list", '/v1/collections', Collection, 'collections'
   let(:collections) { Collection.all }
-
-  get '/v1/collections' do
-    parameter :limit, 'Limit of collections'
-    parameter :offset, 'Offset of collections'
-
-    let(:limit) { 12 }
-    let(:offset) { 0 }
-
-    example_request 'Get a list of collections' do
-      expect(JSON.parse(response_body).map { |o| o['id'] }.sort).to eq(Collection.limit(limit).offset(offset).pluck(:id).sort)
-      expect(status).to eq(200)
-    end
-  end
+  #
+  # get '/v1/collections' do
+  #   parameter :limit, 'Limit of collections'
+  #   parameter :offset, 'Offset of collections'
+  #
+  #   let(:limit) { 12 }
+  #   let(:offset) { 0 }
+  #
+  #   example_request 'Get a list of collections' do
+  #     expect(JSON.parse(response_body).map { |o| o['id'] }.sort).to eq(Collection.limit(limit).offset(offset).pluck(:id).sort)
+  #     expect(status).to eq(200)
+  #   end
+  # end
 
   get '/v1/collections/:id' do
     let(:id) { collections.first.id }
 
-    example 'Get a collections' do
+    example 'Get a collection' do
       do_request
       expect(path).to eq("/v1/collections/#{id}") # `:id` is replaced with the value of `id`
       expect(response_body).to eq(Helper.serialize(Collection.find(id)))