openfoodnetwork/spec/services/create_mail_method_spec.rb

require 'spec_helper'

describe CreateMailMethod do
  describe '#call' do
    let(:mail_method) { Spree::MailMethod.create(environment: 'test') }
    let(:mail_settings) { instance_double(Spree::Core::MailSettings) }
    let(:attributes) do
      { preferred_smtp_username: "smtp_username", environment: "test" }
    end

    before do
      allow(Spree::MailMethod)
        .to receive(:create).with(environment: 'test').and_return(mail_method)
      allow(Spree::Core::MailSettings).to receive(:init) { mail_settings }
    end

    it 'creates a new MailMethod' do
      described_class.new(attributes).call

      expect(Spree::MailMethod)
        .to have_received(:create).with(environment: 'test') { mail_method }
    end

    it 'updates the MailMethod' do
      expect(mail_method)
        .to(receive(:update_attributes)).with(attributes) { mail_method }

      described_class.new(attributes).call
    end

    it 'updates the mail method attributes' do
      described_class.new(attributes).call
      expect(mail_method.preferred_smtp_username).to eq('smtp_username')
    end

    it 'initializes the mail settings' do
      described_class.new(attributes).call
      expect(Spree::Core::MailSettings).to have_received(:init)
    end
  end
end