Added RoutableActions tests

spec/controllers/concerns/routable_actions_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe RoutableActions do
+  controller(::ApplicationController) do
+    include RoutableActions # rubocop:disable RSpec/DescribedClass
+
+    before_action :routable
+
+    def routable
+      @klass = params[:type].constantize
+      @routable = find_routable!(params[:type].constantize, params[:id])
+    end
+
+    def show
+      head :ok
+    end
+  end
+
+  def get_routable(routable)
+    get :show, params: { id: routable.full_path, type: routable.class }
+  end
+
+  describe '#find_routable!' do
+    context 'when signed in' do
+      let(:user) { create(:user) }
+
+      before do
+        sign_in(user)
+      end
+
+      context 'with a project' do
+        let(:routable) { create(:project) }
+
+        context 'when authorized' do
+          before do
+            routable.add_guest(user)
+          end
+
+          it 'returns the project' do
+            get_routable(routable)
+
+            expect(assigns[:routable]).to be_a(Project)
+          end
+
+          it 'allows access' do
+            get_routable(routable)
+
+            expect(response).to have_gitlab_http_status(200)
+          end
+        end
+
+        it 'prevents access when not authorized' do
+          get_routable(routable)
+
+          expect(response).to have_gitlab_http_status(404)
+        end
+      end
+
+      context 'with a group' do
+        let(:routable) { create(:group, :private) }
+
+        context 'when authorized' do
+          before do
+            routable.add_guest(user)
+          end
+
+          it 'returns the group' do
+            get_routable(routable)
+
+            expect(assigns[:routable]).to be_a(Group)
+          end
+
+          it 'allows access' do
+            get_routable(routable)
+
+            expect(response).to have_gitlab_http_status(200)
+          end
+        end
+
+        it 'prevents access when not authorized' do
+          get_routable(routable)
+
+          expect(response).to have_gitlab_http_status(404)
+        end
+      end
+
+      context 'with a user' do
+        let(:routable) { user }
+
+        it 'allows access when authorized' do
+          get_routable(routable)
+
+          expect(response).to have_gitlab_http_status(200)
+        end
+
+        it 'prevents access when unauthorized' do
+          allow(subject).to receive(:can?).and_return(false)
+
+          get_routable(user)
+
+          expect(response).to have_gitlab_http_status(404)
+        end
+      end
+    end
+
+    context 'when not signed in' do
+      it 'redirects to sign in for private resouces' do
+        routable = create(:project, :private)
+
+        get_routable(routable)
+
+        expect(response).to have_gitlab_http_status(302)
+        expect(response.location).to end_with('/users/sign_in')
+      end
+    end
+  end
+end