RubyMidwest 2010 lightning talk presentation on using Aruba with Cucumber to integration test Ruby gem plugins for Rails.

1. Viva la Cucaruba!
Matt Yoho
@mattyoho

2. CUCARUBA! MATT YOHO
Integration testing
for Rails gem
plugins

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Cucumber

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Aruba

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cucumber features
for command line apps

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YO DAWG! I heard you like features in
your features so we put cukes in your
cukes!

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For example...

9. CUCARUBA! MATT YOHO
class WidgetController < AppController
before_filter :find_widget, :only =>
[:show, :edit, :update]
def find_widget
@widget ||= Widget.find(params[:id])
end
end

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class WidgetController < AppController
assume :widget
end

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class WidgetController < AppController
def user_accout
current_user.account
end
hide_action :user_account
helper_method :user_account
end

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class WidgetController < AppController
assume(:account) do
current_user.account
end
end

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Specs go a long way, but...

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Specs go a long way, but...
Rails dependencies, etc.

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Yuck.

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~/projects/app/tmp/aruba

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~/projects/app/tmp/aruba
./tmp/aruba
rake
task

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~/projects/app/tmp/aruba
templates ./tmp/aruba
rake
task

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Feature: Rails Controllers Can Make Assumptions
Scenario: controller invokes assume
Given a file named "app/controllers/widgets_controller.rb" with:
"""
class WidgetsController < ApplicationController
assume(:widget) { Widget.find(params[:id]) }
end
"""
And a file named "app/views/widgets/show.html.erb" with:
"""
<blink><%= widget.name %></blink>
"""
And a file named "features/widget_is_viewed_by_visitor.feature" with:
"""
Feature: Widget is viewed by visitor
Scenario: success
Given a widget named "foobar"
When I view the widget
Then I should see "foobar"
"""
When I run "cucumber features/widget_is_viewed_by_visitor.feature"
Then I should see:
"""
1 scenario (1 passed)
3 steps
"""

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Feature: Foo Does Something
Scenario: foo works
Given a file named "foo.feature" with:
"""
Feature: Widget is viewed by visitor
Scenario: success
Given a foo named "bar"
When I view the foo
Then I should see "bar"
"""
When I run "cucumber foo.feature"
Then I should see:
"""
1 scenario (1 passed)
1 step
"""

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A little slow, but totally badass.

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RVM and Bundler
are complimentary

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Be kind to your contributors

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Get
Forked

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http://github.com/aslakhellesoy/aruba
http://github.com/rspec/rspec-
rails
http://github.com/mattyoho/
basic_assumption

27. Thank you
Matt Yoho
matt@edgecase.com
@mattyoho