Testing sendwithus_ruby with rspec

Question

we use sendwithus ruby gem to send emails in our Rails app. (https://github.com/sendwithus/sendwithus_ruby). How can I test sending emails with rspec?

Answer 1

This is a test using vcr library. Not pretty, but works. Share your ideas on how to improve it.

Ruby wrapper for testing:

class TestWithUs

  CASSETTES_PATH = 'fixtures/vcr_cassettes/'

  def initialize(name)
    @name = name
    @cassette_file = get_cassette_file(name)
  end

  def track(&block)
    File.delete(@cassette_file) if File.exist?(@cassette_file)
    VCR.use_cassette(@name) do
      block.call
    end
  end

  def results
    YAML.load(File.read @cassette_file)["http_interactions"]
  end

  private

  def get_cassette_file(name)
    CASSETTES_PATH + name + ".yml"
  end

end

Test File:

require 'spec_helper'
require 'vcr'

VCR.configure do |config|
  config.cassette_library_dir = "fixtures/vcr_cassettes"
  config.hook_into :webmock
  #config.ignore_request { |r| r.uri =~ /localhost:9200/ }
  config.ignore_localhost = true
end

describe 'messages sent to matt' do
  before do
    @test_with_us = TestWithUs.new("welcome_email")
    @test_with_us.track do

      # Usually it sends email on some kind of callback,
      # but for this example, it's straightforward

      SENDWITHUS.send_with(CONFIG.swu_emails[:welcome],
        { address: "[email protected]" },
        {company_name: 'Meow Corp'})
    end
  end

  it "Sends an email" do
    sendwithus_calls = @test_with_us.results.select {|c| c["request"]["uri"] == "https://api.sendwithus.com/api/v1/send"}
    expect(sendwithus_calls.count).to eq(1)
  end
end