The document discusses integration testing for Rails gem plugins using tools like Cucumber and Aruba. It provides examples of Rails controller implementations and test scenarios that validate functionality through Cucumber features. Additionally, it encourages collaboration and proper use of tools like RVM and Bundler within the development environment.

1. Viva la Cucaruba!
Matt Yoho
@mattyoho

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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...

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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