growstuff/spec/features/notifications_spec.rb

require 'rails_helper'

describe "Notifications", :js do
  let(:sender)    { create :member                        }
  let(:recipient) { create :member, login_name: 'beyonce' }

  context "On existing notification" do
    let!(:notification) do
      create :notification,
        sender:    sender,
        recipient: recipient,
        body:      "Notification body",
        post_id:   nil
    end

    before do
      login_as recipient
      visit notification_path(notification)
    end

    it "Replying to the notification" do
      click_link "Reply"
      expect(page).to have_content "Notification body"

      fill_in 'notification_body', with: "Response body"
      click_button "Send"

      expect(page).to have_content "Message was successfully sent"
    end
  end

  describe 'pagination' do
    before do
      FactoryBot.create_list :notification, 34, recipient: recipient
      login_as recipient
      visit notifications_path
    end

    it 'has page navigation' do
      expect(page).to have_selector 'a[rel="next"]'
    end

    it 'paginates at 30 notifications per page' do
      expect(page).to have_selector 'tr', count: 31
    end

    it 'navigates pages' do
      first('a[rel="next"]').click
      expect(page).to have_selector 'tr', count: 5
    end
  end
end