administrator dashboard for observing the Docker container pool

spec/controllers/admin/dashboard_controller_spec.rb

@@ -0,0 +1,21 @@
+require 'rails_helper'
+
+describe Admin::DashboardController do
+  before(:each) { allow(controller).to receive(:current_user).and_return(FactoryGirl.build(:admin)) }
+
+  describe 'GET #show' do
+    describe 'with format HTML' do
+      before(:each) { get :show }
+
+      expect_status(200)
+      expect_template(:show)
+    end
+
+    describe 'with format JSON' do
+      before(:each) { get :show, format: :json }
+
+      expect_json
+      expect_status(200)
+    end
+  end
+end

spec/policies/admin/dashboard_policy_spec.rb

@@ -0,0 +1,19 @@
+require 'rails_helper'
+
+describe Admin::DashboardPolicy do
+  subject { Admin::DashboardPolicy }
+
+  permissions :show? do
+    it 'grants access to admins' do
+      expect(subject).to permit(FactoryGirl.build(:admin), :dashboard)
+    end
+
+    it 'does not grant access to teachers' do
+      expect(subject).not_to permit(FactoryGirl.build(:teacher), :dashboard)
+    end
+
+    it 'does not grant access to external users' do
+      expect(subject).not_to permit(FactoryGirl.build(:external_user), :dashboard)
+    end
+  end
+end