administrator dashboard for observing the Docker container pool

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