Add folders subcollection to providers

Related https://bugzilla.redhat.com/show_bug.cgi?id=1472279

app/controllers/api/providers_controller.rb

@@ -21,6 +21,7 @@ class ProvidersController < BaseController
     include Subcollections::Vms
     include Subcollections::Flavors
     include Subcollections::CloudTemplates
+    include Subcollections::Folders
     include Subcollections::Networks
 
     before_action :validate_provider_class

app/controllers/api/subcollections/folders.rb

@@ -0,0 +1,9 @@
+module Api
+  module Subcollections
+    module Folders
+      def folders_query_resource(object)
+        object.respond_to?(:folders) ? object.folders : []
+      end
+    end
+  end
+end

config/api.yml

@@ -1122,6 +1122,12 @@
       :get:
       - :name: read
         :identifier: floating_ip_show
+  :folders:
+    :description: Folders
+    :options:
+    - :subcollection
+    :verbs: *g
+    :klass: EmsFolder
   :generic_object_definitions:
     :description: Generic Object Definitions
     :options:
@@ -1863,6 +1869,7 @@
     - :vms
     - :flavors
     - :cloud_templates
+    - :folders
     - :networks
     :collection_actions:
       :get:
@@ -1937,6 +1944,18 @@
         :identifier: ems_infra_protect
       - :name: unassign
         :identifier: ems_infra_protect
+    :folders_subcollection_actions:
+      :get:
+      - :name: read
+        :identifier:
+        - ems_infra_show_list
+        - ems_block_storage_show_list
+    :folders_subresource_actions:
+      :get:
+      - :name: read
+        :identifier:
+        - ems_infra_show
+        - ems_block_storage_show
     :networks_subcollection_actions:
       :get:
       - :name: read

spec/requests/providers_spec.rb

@@ -1472,6 +1472,56 @@ def gen_import_request
     end
   end
 
+  context 'Folders subcollection' do
+    let(:folder) { FactoryGirl.create(:ems_folder) }
+    let(:ems) { FactoryGirl.create(:ext_management_system) }
+
+    before do
+      ems.add_folder(folder)
+    end
+
+    context 'GET /api/providers/:id/folders' do
+      it 'returns the folders with an appropriate role' do
+        api_basic_authorize(collection_action_identifier(:providers, :read, :get))
+
+        get(api_provider_folders_url(nil, ems))
+
+        expected = {
+          'resources' => [{'href' => api_provider_folder_url(nil, ems, folder)}]
+        }
+        expect(response).to have_http_status(:ok)
+        expect(response.parsed_body).to include(expected)
+      end
+
+      it 'does not return the folders without an appropriate role' do
+        api_basic_authorize
+
+        get(api_provider_folders_url(nil, ems))
+
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+
+    context 'GET /api/providers/:id/folders/:s_id' do
+      it 'returns the folder with an appropriate role' do
+        api_basic_authorize action_identifier(:providers, :read, :resource_actions, :get)
+
+        get(api_provider_folder_url(nil, ems, folder))
+
+        expect(response).to have_http_status(:ok)
+        expect(response.parsed_body).to include('id' => folder.id.to_s)
+      end
+
+      it 'does not return the folder without an appropriate role' do
+        api_basic_authorize
+
+        get(api_provider_folder_url(nil, ems, folder))
+
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+  end
+
   context 'Networks subcollection' do
     let(:hardware) { FactoryGirl.create(:hardware) }
     let(:network) { FactoryGirl.create(:network, :hardware => hardware) }