Add specs for Policies (#392)

* Add specs for Policies

* Fix CI issues

spec/policies/user_policy_spec.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe UserPolicy, type: :policy do
+  subject(:user_policy) { described_class }
+
+  let(:administrator) { create(:user, :administrator) }
+  let(:agent) { create(:user) }
+  let(:user) { create(:user) }
+
+  permissions :create?, :update?, :destroy? do
+    context 'when administrator' do
+      it { expect(user_policy).to permit(administrator, user) }
+    end
+
+    context 'when agent' do
+      it { expect(user_policy).not_to permit(agent, user) }
+    end
+  end
+
+  permissions :index? do
+    context 'when administrator' do
+      it { expect(user_policy).to permit(administrator, user) }
+    end
+
+    context 'when agent' do
+      it { expect(user_policy).to permit(agent, user) }
+    end
+  end
+end