Story-driven Testing

story-driven testing people ﬁrst, computers second.

testing can be frustrating.

testing isn’t fun.

so we don’t do it...

then things break

and users get mad.

so how do you win?

make tests automated!

get users involved!

and enforce policy.

everyone knows why testing is good.

and everyone has excuses why they don’t test.

it’s the manager’s job to keep projects on schedule

it’s the passionate programmer who ﬁghts for quality.

testing needs to be easy (and quick) to do...

and it must be part of the schedule.

domain experts ﬁrst and code second.

And I fill in "Email" with "homer@simpsons.com" Feature: User Signup In order to help other people learn Rails and get help myself And I press "Sign Up" As an interested community member I want to sign up Then I should receive an email Scenario: Signing up to use the system When I open the email Given I go to the home page And I press "Sign up" Then I fill in "Login" with "homer" activate your Rails Mentors And I should see "Please And I press "Sign account" in the subject And I fill in "Email" with "homer@simpsons.com" Up" When I open the email click the first link in the email When I Then I should receive an email When I click the firstshould see "Almost done..." Then I link in the email Then I should see "Please activate your Rails Mentors account" in the subject When I fill in fill in "Password" with "homer_rocks" When I "Password" with "homer_rocks" Then I should see "Almost done..." And I press "Start in "Password Confirmation" with And I fill using your account!" And I fill in "Password Confirmation" with "homer_rocks" "homer_rocks" Then I should be on the dashboard page And I should see "Your account has been activated. Welcome to Rails Mentors!" And I press "Start using your account!" And I should see "Please complete your profile!" Then I should be on the dashboard page And I should see "Your account has been activated. Welcome to Rails Mentors!" And I should see "Please complete your profile!"

features are value- propositions

focus on features that have real business value.

As a... I want to... So that I can...

Feature: Checking grades As a nervous student who may not graduate I want to be able to check my grades in real time So that I know I will get a diploma

Given Then When

scenarios describe the feature in detail.

Given setups, preconditions, prerequisites

Given I am logged in as "homer" And I am a current student And I am on the My Info page And I received a grade of "C-" in "CS 462"

When describe actions

When I click "Check my grades" And I select "Current term" And I press "View"

Then describes outcomes

Then I should see "Grades for Homer Simpson" And I should see a table with "CS 462" in row 1, column 1 And I should see a table with "C-" in row 1, column 4`

step deﬁnitions make this all possible.

step deﬁnitions use Ruby code and regular expressions to run stories.

but you can run stories against any web-based application

WEBRAT

webrat is for testing rails applications

webrat provides matchers for cucumber

Web Application Testing In Ruby

WATIR platforms • Internet Explorer (Windows) • Firefox (Windows and Mac) • Safari (Mac)

steps to deﬁnitions Then I should see "Grades for Homer Simpson" Then /I should see "(.*)"/ do |text| @browser.text.should include(text) end

multiple parameters When I fill in "username" with "bphogan" When /^I fill in "([^"]*)" with "([^"]*)"$/ do |field, value|

a small demo Feature: Share code with others In order to help a student who is in a different state As a good teacher I want to share some code I wrote over the internet Scenario: Create a private paste so it won’t be found by Google Given I go to "http://www.pastie.org/" And I fill in "paste[body]" with "This is a simple test case using Cucumber" And I select "Plain text" from "paste_parser_id" And I check "paste[restricted]" When I press "Paste" Then I should see "less than a minute ago" When I click "Edit" Then I should see "This paste will be private."

stories automate a browser

Many more advanced features... but

cucumber lets you keep your features with the code

and it facilitates communication between technical and non-technical people.

you will be a hero.

then you win.

questions go to bphopgan@gmail.com

Story-driven Testing

by Brian Hogan on Sep 13, 2009

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