Outside-In Development With Cucumber

Ben Mabey

Outside-In Development

Saturday, March 14, 2009

Who’s myaudience?

Scenario: planning meetingGiven I am a Software DeveloperWhen I am given a feature requestThen I should...

What is the mostCRITICAL

word to keep in mind?

WSaturday, March 14, 2009

Scenario: planning meetingGiven I am a Software DeveloperWhen I am given a feature requestThen I should ask why.

Why?Saturday, March 14, 2009

Feature Request:Print Reports

Story from Thoughtworks:

http://www.theregister.co.uk/2007/06/25/

Protect Revenue

Increase Revenue

Manage Cost

Feature: title

In order to [Business Value]As a [Role]I want to [Some Action] (feature)

* not executed* documentation value* variant of contextra* business value up front

There is no template.What is important to have in narrative:

* business value * stakeholder role * user role * action to be taken by user

Scenario: titleGiven [Context]When I do [Action]Then I should see [Outcome]

Scenario: titleGiven [Context]And [More Context]When I do [Action]And [Other Action]Then I should see [Outcome]But I should not see [Outcome]

project_root/| `-- features

project_root/| `-- features |-- awesomeness.feature |-- greatest_ever.feature

project_root/| `-- features |-- awesomeness.feature |-- greatest_ever.feature `-- support |-- env.rb `-- other_helpers.rb

Given a widget

Given a widgetGiven /^a widget$/ do #codes go hereend

Definition

Step Mother

Definition

Step Mother

Outside-In

Write Scenarios

Steps are pending

Write Step Definition

Go Down A Gear

We ain’t gotno RSPEC!

RSpec, TestUnit, etc

Write Code Example(Unit Test)

Make Example Pass

REFACTOR!!

Where Are we?

Continue until...

REFACTORand

REPEAT

features/manage_my_wishes.feature

Feature: manage my wishes

In order to get more stuff As a greedy person I want to manage my wish list for my family members to view

Scenario: add wish Given I am logged in When I make a "New car" wish Then "New car" should appear on my wish list

Line # of scenario

I can has backtraze?Given I am logged in #features/manage_my_wishes.feature:8

features/i_can_has_wishez_plz.feature

OH HAI: I CAN HAS WISHEZ PLZ

SO DAT I CAN HAS HUGS TIEM AN PLAY TIEM AN SLEEP TIEM AN NOM TIEM AS NICE GREEDEE KITTEH I CAN PLZ MANEGE TEH WISHEZ

MISHUN: MAK NEW WISH GIVN I AM LOGGD IN WEN I MAK "CHEEZBURGER" WISH DEN I C "CHEEZBURGER" ON ME WISHEZ LIT

cucumber some.feature --language en-lol

features/step_definitions/user_steps.rb

Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true)

Test Data Builder / Object Mother

spec/fixjour_builders.rb

Fixjour do define_builder(User) do |klass, overrides| klass.new( :email => "user#{counter(:user)}@email.com", :password => 'password', :password_confirmation => 'password' ) endend

Fixture Replacement, Fixjour, Factory Girl, etc

visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_buttonend

Webrat / Awesomeness

features/support/env.rb

require 'webrat'

Webrat.configure do |config| config.mode = :railsend

features/support/env.rb

require 'webrat'

Webrat.configure do |config| config.mode = :railsend

Adapter

features/step_definitions/webrat_steps.rb

When /^I press "(.*)"$/ do |button| click_button(button)end

When /^I follow "(.*)"$/ do |link| click_link(link)end

When /^I fill in "(.*)" with "(.*)"$/ do |field, value| fill_in(field, :with => value) end

When /^I select "(.*)" from "(.*)"$/ do |value, field| select(value, :from => field) end

# Use this step in conjunction with Rail's datetime_select helper. For example:# When I select "December 25, 2008 10:00" as the date and time When /^I select "(.*)" as the date and time$/ do |time| select_datetime(time)end

# Use this step when using multiple datetime_select helpers on a page or # you want to specify which datetime to select. Given the following view:# <%= f.label :preferred %><br /># <%= f.datetime_select :preferred %># <%= f.label :alternative %><br /># <%= f.datetime_select :alternative %># The following steps would fill out the form:# When I select "November 23, 2004 11:20" as the "Preferred" data and time# And I select "November 25, 2004 10:30" as the "Alternative" data and timeWhen /^I select "(.*)" as the "(.*)" date and time$/ do |datetime, datetime_label| select_datetime(datetime, :from => datetime_label)end

# Use this step in conjunction with Rail's time_select helper. For example:# When I select "2:20PM" as the time# Note: Rail's default time helper provides 24-hour time-- not 12 hour time. Webrat# will convert the 2:20PM to 14:20 and then select it. When /^I select "(.*)" as the time$/ do |time| select_time(time)end

# Use this step when using multiple time_select helpers on a page or you want to# specify the name of the time on the form. For example:# When I select "7:30AM" as the "Gym" timeWhen /^I select "(.*)" as the "(.*)" time$/ do |time, time_label| select_time(time, :from => time_label)end

# Use this step in conjunction with Rail's date_select helper. For example:# When I select "February 20, 1981" as the dateWhen /^I select "(.*)" as the date$/ do |date| select_date(date)end

# Use this step when using multiple date_select helpers on one page or# you want to specify the name of the date on the form. For example:# When I select "April 26, 1982" as the "Date of Birth" dateWhen /^I select "(.*)" as the "(.*)" date$/ do |date, date_label| select_date(date, :from => date_label)end

When /^I check "(.*)"$/ do |field| check(field) end

When /^I uncheck "(.*)"$/ do |field| uncheck(field) end

When /^I choose "(.*)"$/ do |field| choose(field)end

When /^I attach the file at "(.*)" to "(.*)" $/ do |path, field| attach_file(field, path)end

Then /^I should see "(.*)"$/ do |text| response.should contain(text)end

Then /^I should not see "(.*)"$/ do |text| response.should_not contain(text)end

Then /^the "(.*)" checkbox should be checked$/ do |label| field_labeled(label).should be_checkedend

19 Steps Out-of-box

visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button

Given /^I am logged in$/ do

# make sure we have actually logged in- so we fail fast if not session[:user_id].should == @current_user.idend

# make sure we have actually logged in- so we fail fast if not controller.current_user.should == @current_userend

visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button session[:user_id].should == @current_user.id

visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button

# make sure we have actually logged in- so we fail fast if not session[:user_id].should == @current_user.id controller.current_user.should == @current_user response.should contain("Signed in successfully")end

Specify outcome, not implementation.

visit new_session_path fill_in "Email", :with => @current_user.email fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not response.should contain("Signed in successfully")end

No route matches “/sessions/create” with{:method=>:post} (ActionController::RoutingError)

I’m going to cheat...

I’m going to cheat...$ gem install thoughtbot-clearance$ ./script generate clearance$ ./script generate clearance_features

features/step_definitions/wish_steps.rb

When /^I make a "(.+)" wish$/ do |wish| end

Then /^(.+) should appear on my wish list$/ do |wish| end

When /^I make a "(.+)" wish$/ do |wish| end

Regexp Capture -> Yielded Variable

When /^I make a "(.+)" wish$/ do |wish| visit "/wishes" click_link "Make a wish" fill_in "Wish", :with => wish click_buttonend

Then /^(.+) should appear on my wish list$/ do |wish| response.should contain("Your wish has been added!") response.should contain(wish)end

No route matches “/wishes” with{:method=>:get} (ActionController::RoutingError)

config/routes.rb

ActionController::Routing::Routes.draw do |map| map.resources :wishes

config/routes.rb

When I make a “New car” wishuninitialized constant WishesController (NameError)

config/routes.rb

$./script generate rspec_controller new create

config/routes.rb

When I make a “New car” wishCould not find link with text or title orid “Make a wish” (Webrat::NotFoundError)

app/views/wishes/index.html.erb

<%= link_to "Make a wish", new_wish_path %>

When I make a “New car” wish Could not find field: “Wish” (Webrat::NotFoundError)

app/views/wishes/new.html.erb

<% form_for :wish do |f| %> <%= f.label :name, "Wish" %> <%= f.text_field :name %> <%= submit_tag "Make the wish!" %><% end %>

fill_in "Wish", :with => wish

<%= f.label :name, "Wish" %> <%= f.text_field :name %>

app/views/wishes/new.html.erb

<% form_for :wish do |f| %> <%= submit_tag "Make the wish!" %><% end %>

Location Strategy FTW!

Controller

spec/controllers/wishes_controller_spec.rb

describe WishesController do describe "POST / (#create)" do

endend

describe WishesController do describe "POST / (#create)" do it "should create a new wish for the user with the params" do user = mock_model(User, :wishes => mock("wishes association")) controller.stub!(:current_user).and_return(user) user.wishes.should_receive(:create).with(wish_params)

post :create, 'wish' => {'name' => 'Dog'} end endend

app/controllers/wishes_controller.rb

class WishesController < ApplicationController

def create current_user.wishes.create(params['wish']) end

it "should redirect the user to their wish list" do do_post response.should redirect_to(wishes_path) end

describe WishesController do describe "POST / (#create)" do before(:each) do .....

endend

def create current_user.wishes.create(params['wish']) redirect_to :action => :index end

Controller

When I make a “New car” wishundefined method `wishes` for #<User:0x268e898> (NoMethodError)

$./script generate rspec_model wish name:string user_id:integer

app/models/wish.rb

class Wish < ActiveRecord::Base belongs_to :userend

app/models/user.rb

class User < ActiveRecord::Base include Clearance::App::Models::User has_many :wishesend

app/models/wish.rb

class Wish < ActiveRecord::Base belongs_to :userend

app/models/user.rb

class User < ActiveRecord::Base include Clearance::App::Models::User has_many :wishesend

When I make a “New car” wishThen “New car” should appear on my wishexpected the following element’s content to include “Your wish has been added!”

it "should notify the user of creation via the flash" do do_post flash[:success].should == "Your wish has been added!"end

def create flash[:success] = "Your wish has been added!" end

current_user.wishes.create(params['wish']) redirect_to :action => :index

def create flash[:success] = "Your wish has been added!" end

Then “New car” should appear on my wishexpected the following element’s content to include “New car”

describe "GET / (#index)" do def do_get get :index end

it "should assign the user's wishes to the view" do do_get assigns[:wishes].should == @current_user.wishes end

def index @wishes = current_user.wishes end

Then I should see the following wishes | Wish | | Nintendo Wii |

Given /^the following wishes exist$/ do |table|

endend

| Wish | Family Member | features/step_definitions/wish_steps.rb

Given /^the following wishes exist$/ do |table| table.hashes.each do |row| member = User.find_by_name(row["Family Member"]) || create_user(:name => row["Family Member"])

member.wishes.create!(:name => row["Wish"]) endend

Feature: Addition In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers

Scenario Outline: Add two numbers Given I have entered <input_1> into the calculator And I have entered <input_2> into the calculator When I press <button> Then the result should be <output> on the screen

Examples: | input_1 | input_2 | button | output | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | | 0 | 40 | add | 40 |

<input_1> <input_2> <button> <output>

| 20 | 30 | add | 50 |

| 2 | 5 | add | 7 |

| 0 | 40 | add | 40 |

When /^I view the wish list for "(.+)"$/ do |user_name| Given "I am logged in" visit "/wishes/#{user_name}"end

Steps Within Steps

When /^I view the wish list for "(.+)"$/ do |user_name| visit "/wishes/#{user_name}"end

Steps Within Steps Given "I am logged in"

When /^I view the wish list for "(.+)"$/ do |user_name| login_as(create_user) visit "/wishes/#{user_name}"end

Helpers - Ruby FTW

When /^I view the wish list for "(.+)"$/ do |user_name| visit "/wishes/#{user_name}"end

Helpers - Ruby FTW login_as(create_user)

def login_as(user) visit new_session_path fill_in "Email", :with => user.email fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not response.should contain("Signed in successfully") end Given /^I am logged in$/ do @current_user = create_user(:email_confirmed => true) login_as(@current_user)end

“Every time you monkeypatch Object, a kitten dies.”

http://seanohalpin.github.com/unobtrusive-metaprogramming/unobtrusive-metaprogramming.html

module UserHelpers def login_as(user) visit new_session_path fill_in "Email", :with => user.email fill_in "Password", :with => valid_user_attributes["password"] click_button # make sure we have actually logged in- so we fail fast if not response.should contain("Signed in successfully") endend

World { |world| world.extend UserHelpers }

I can skp teh unit testz?

Acceptance Tests

Application LevelFor CustomersSlowGood confidencePrevent against regression

Unit Tests

Object Level- Isolated!For developersFAST! (should be at least)- Tighter Feedback LoopMore about design!!!!!!!!!!!!

Will need both gears! Some things are easier to test at the application level and vice-versa.

SRSLY?Model specs,Controller Specs,and view specs!?

WSaturday, March 14, 2009

MSaturday, March 14, 2009

More tests == More Maintenance

Test Value =Design +

Documentation +Defence (regression)

if test.value > test.cost Suite.add(test)end

KTHXBYE!BenMabey.com

github.com/bmabey

Twitter: bmabeyIRC: mabes

Outside-In Development With Cucumber

Technology

Behavior Driven Development Cucumber · Behavior Driven Development. Feature: Cucumber In order to share the love As a presenter I will demonstrate behavior driven development with

Behavior-Driven Development с RSpec и Cucumber

JDD2014: Behaviour driven development, BDD, with cucumber for JAVA - Thomas Sundberg

[Thong Nguyen & Trong Bui] Behavior Driven Development (BDD) and Automation Testing with Cucumber

Behaviour-Driven Development with D and Cucumber · Behaviour-Driven Development with D and Cucumber @atilaneves Átila Neves, PhD Cisco Systems DConf 2015 . Outline ! My Software

Irrigation scheduling Schedulin… · Cucumber P18 10 11 0.33 50 Cucumber P18 20 16 0.53 50 Cucumber P18 30 21 0.78 50 Cucumber P18 40 24 0.9 50 Cucumber P18 50 24 0.9 50 Cucumber

Lean outside in software development

Development of cucumber lines resistant to Cucumber …ijat-aatsea.com/pdf/v10_n3_14_May/18_IJAT_2014_10(3)_Parichat... · Development of cucumber lines resistant to Cucumber mosaic

Thinking outside the box - Brandon Development

Behavior-Driven Development and Cucumberthe Cucumber textbook (I may also refer to it as the “testing” textbook) • Installing Cucumber • Behavior-Driven Development • Gherkin

Shrimp Ala Chepe Smelt Egg Squid Tuna White Tuna (Escolar) Yellowtail Inside crab, avocado and cucumber Outside shrimp & mustard sauce. Inside spicy tuna & cucumber. Outside spicy

Behavior Driven Development and Automation Testing Using Cucumber

An Introduction to Behaviour Driven Development with Cucumber Java

Behaviour Driven Development with Cucumber for Java … · Behaviour Driven Development with Cucumber for Java Thomas Sundberg ... Selenium –

Behaviour Driven Development with Cucumber for Java

Agile Web Development with Rails and Cucumber

· 2019-10-09 · WAYNE ROLL Inside: spicy tuna, cucumber & radish sprout Outside: avocado AKARI ROLL Inside: shrimp tempura & cucumber Outside: eel, avocado & mango 17.00 16.00

«BDD, Gherkin, Cucumber and why we need it for successful product development»

Behavior Driven Development Cucumber - QA Testing Tools · Scenario: Behavior Driven Development with Cucumber Given a desire for higher quality software And a tool that executes

Cucumber 3.0 and Beyond - pnsqc.org€¦ · Cucumber 3.0 and Beyond Thomas Haver tjhaver@gmail.com Abstract Cucumber is a tool that supports Behavior Driven Development (BDD), a software