How to test with RSpec if an email is delivered

Question

I\'d like to test if an email is delivered if I call a controller method with :post. I\'ll use email_spec so I tried this snipped here: http://rubydoc.info/gems/email_spec/1

Answer 1

To add a little more, make sure if you're going to stub out a call using should_receive that you have an integration test elsewhere testing that you're actually calling the method correctly.

I've been bit a few times by changing a method that was tested elsewhere with should_receive and having tests still pass when the method call was broken.

If you prefer to test the outcome rather than using should_receive, shoulda has a nice matcher that works like the following:

it { should have_sent_email.with_subject(/is spam$/) }

Shoulda documentation

More information on using Shoulda Matchers with rSpec

Answer 2

Try email-spec

describe "POST /signup (#signup)" do
  it "should deliver the signup email" do
    # expect
    expect(UserMailer).to(receive(:deliver_signup).with("email@example.com", "Jimmy Bean"))
    # when
    post :signup, "Email" => "email@example.com", "Name" => "Jimmy Bean"
  end
end

more examples here: https://github.com/email-spec/email-spec#testing-in-isolation