Easily test ActionMailer and Mail messages in your Capybara integration tests
Add this line to your application's Gemfile:
gem 'capybara-email'And then execute:
$ bundle
Or install it yourself as:
$ gem install capybara-email
In your spec_helper.rb require capybara/email/rspec.
require 'capybara/email/rspec'Example:
feature 'Emailer' do
background do
# will clear the message queue
clear_emails
visit email_trigger_path
# Will find an email sent to [email protected]
# and set `current_email`
open_email('[email protected]')
end
scenario 'following a link' do
current_email.click_link 'your profile'
expect(page).to have_content 'Profile page'
end
scenario 'testing for content' do
expect(current_email).to have_content 'Hello Joe!'
end
scenario 'testing for attachments' do
expect(current_email.attachments.first.filename).to eq 'filename.csv'
end
scenario 'testing for a custom header' do
expect(current_email.headers).to include 'header-key'
end
scenario 'testing for a custom header value' do
expect(current_email.header('header-key')).to eq 'header_value'
end
scenario 'view the email body in your browser' do
# the `launchy` gem is required
current_email.save_and_open
end
endRequire capybara/email in your features/support/env.rb
require 'capybara/email'
Once you have required capybara-email, gaining access to usable methods
is easy as adding this module to your Cucumber World:
World(Capybara::Email::DSL)
I recommend adding this to a support file such as features/support/capybara_email.rb
require 'capybara/email'
World(Capybara::Email::DSL)Example:
Scenario: Email is sent to winning user
Given "[email protected]" is playing a game
When that user picks a winning piece
Then "[email protected]" receives an email with "You've Won!" as the subject
Then /^"([^"]*)" receives an email with "([^"]*)" as the subject$/ do |email_address, subject|
open_email(email_address)
expect(current_email.subject).to eq subject
endRequire capybara/email at the top of test/test_helper.rb
require 'capybara/email'Include Capybara::Email::DSL in your test class
class ActionDispatch::IntegrationTest
include Capybara::Email::DSL
endExample:
class EmailTriggerControllerTest < ActionDispatch::IntegrationTest
def setup
# will clear the message queue
clear_emails
visit email_trigger_path
# Will find an email sent to `[email protected]`
# and set `current_email`
open_email('[email protected]')
end
test 'testing any email is sent' do
expect(all_emails).not_to be_empty
end
test 'following a link' do
current_email.click_link 'your profile'
expect(page).to have_content 'Profile page'
end
test 'testing for content' do
expect(current_email).to have_content 'Hello Joe!'
end
test 'testing for a custom header' do
expect(current_email.headers).to include 'header-key'
end
test 'testing for a custom header value' do
expect(current_email.header('header-key')).to eq 'header_value'
end
test 'view the email body in your browser' do
# the `launchy` gem is required
current_email.save_and_open
end
endThe current_email method will delegate all necessary method calls to
Mail::Message. So if you need to access the subject of an email:
current_email.subjectCheck out API for the mail gem for details on what methods are
available.
When testing, it's common to want to open an email and click through to your application. To do this, you'll probably need to update your test environment, as well as Capybara's configuration.
By default, Capybara's app_host is set to
http://example.com. You should update this so that it points to the
same host as your test environment. In our example, we'll update both to
http://localhost:3001:
# tests/test_helper.rb
ActionDispatch::IntegrationTest do
Capybara.server_port = 3001
Capybara.app_host = 'http://localhost:3001'
end
# config/environments/test.rb
config.action_mailer.default_url_options = { host: 'localhost',
port: 3001 }Sending emails asynchronously will cause #open_email to not open the
correct email or not find any email at all depending on the state of the
email queue. We recommend forcing a sleep prior to trying to read any
email after an asynchronous event:
click_link 'Send email'
sleep 0.1
open_email '[email protected]'We are very thankful for the many contributors
This gem follows Semantic Versioning
Stable branches are created based upon each minor version. Please make pull requests to specific branches rather than master.
Please make sure you include tests!
Don't use tabs to indent, two spaces are the standard.
DockYard, Inc. © 2014
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