documents_controller_spec.rb

# code is not mine
require 'spec_helper'

describe Api::DocumentsController do
  context '#share' do
    let(:name)       { SecureRandom.hex }
    let(:box_model)  { build(:box_model, name: name) }
    let(:type)       { Document::TYPES.sample }
    let(:pxc_number) { SecureRandom.hex }
    let(:comments)   { SecureRandom.hex }
    let(:emails)     { [SecureRandom.hex] }

    specify "users receives email" do
      locale = 'en'
      document = Document.new(box_model, type, locale)
      allow(Document).to receive(:find).with(pxc_number, type, locale).and_return(document)

      post :share, id: pxc_number, type: type, language: locale, emails: emails, comments: comments

      expect(response).to be_success

      mail = ActionMailer::Base.deliveries.last
      expect(mail.to).to eq(emails)
      expect(mail.subject).to include(name)
      expect(mail.body).to include(comments)
      expect(mail.body).to include(name)
    end
  end
end