Cultivating Cucumber

Friday, February 4, 2011

@leshillFriday, February 4, 2011

Rocketeer #7Friday, February 4, 2011

We are hiring. http://pictureofhealth.comFriday, February 4, 2011

Cultivating Cucumber It is great food for thought!Friday, February 4, 2011

HappyFriday, February 4, 2011

Not so HappyFriday, February 4, 2011

Conﬁdent! And Happy!Friday, February 4, 2011

BackgroundFriday, February 4, 2011

Feature1 Feature: Design and Build an app using BDD2 In order to produce an app at low cost and high speed3 As a developer4 I should employ Rails with CucumberFriday, February 4, 2011

Scenario and Steps Scenario: Description of what to testFriday, February 4, 2011

Scenario and Steps Scenario: Description of what to test Given puts the system into a known stateFriday, February 4, 2011

Scenario and Steps Scenario: Description of what to test Given puts the system into a known state When specifies the user’s actionsFriday, February 4, 2011

Scenario and Steps Scenario: Description of what to test Given puts the system into a known state When specifies the user’s actions Then we can observe the outcomeFriday, February 4, 2011

Scenario and Steps Scenario: Description of what to test Given puts the system into a known state Given specifies the user’s actions Given we can observe the outcomeFriday, February 4, 2011

Step Definitions def log(*args) puts args.join(,) end When /^three (.*) mice$/ do |disability| log disability end When /^three blind (.*)$/ do |animal| log animal endFriday, February 4, 2011

HooksFriday, February 4, 2011

Around Hook Around do |scenario, block| 2 puts "1st" 3 block.call 4 puts "1st" 5 end 6 7 Around do |scenario, block| 8 puts "2nd" 9 block.call 10 puts "2nd" 11 endFriday, February 4, 2011

Around Hook Scenario: How are the around hooks sequenced When I runFriday, February 4, 2011

Around Hook Scenario: How are the around hooks sequenced When I run %wip Using the wip proﬁle... Feature: Around hook sequencing @wip Scenario: How are the around hooks sequenced # features/around_hook.feature:7 1st 2nd When I run # features/step_deﬁnitions/run_steps.rb:5 2nd 1st 1 scenario (1 passed) 1 step (1 passed) 0m1.569s The --wip switch was used, so I didnt expect anything to pass. These scenarios passed:Friday, February 4, 2011

Around HookScenario: What happens when there is a failure When I failFriday, February 4, 2011

Around HookScenario: What happens when there is a failure When I fail % wip Feature: Around hook sequencing @wip Scenario: What happens when there is a failure # features/around_hook.feature:10 1st 2nd When I fail # features/step_definitions/run_steps.rb:9 (RuntimeError) ./features/step_definitions/run_steps.rb:10:in `/Î fail$/ features/around_hook.feature:11:in `When I fail 2nd 1st Failing Scenarios: cucumber -p wip features/around_hook.feature:10 # Scenario: What happens when there is a failure 1 scenario (1 failed) 1 step (1 failed) 0m1.522s The --wip switch was used, so the failures were expected. All is good.Friday, February 4, 2011

AfterStep Hook 13 AfterStep do |scenario| 14 puts "after_step" 15 endFriday, February 4, 2011

AfterStep Hook Scenario: What happens when there is a failure When I run And I fail Scenario: What happens when there is a failure # features/after_step_hook.feature:13 after_step When I run # features/step_definitions/run_steps.rb:5 And I fail # features/step_definitions/run_steps.rb:9 (RuntimeError) ./features/step_definitions/run_steps.rb:10:in `/Î fail$/ features/after_step_hook.feature:15:in Ànd I failFriday, February 4, 2011

Global Hooks # features/support/global.rb my_heavy_object = HeavyObject.new 18 my_heavy_object.do_it 19 20 at_exit do 21 my_heavy_object.undo_it 22 endFriday, February 4, 2011

AfterConfiguration Hook AfterConfiguration do |config|25 puts "Features in #{config.feature_dirs}"26 end Friday, February 4, 2011

TagsFriday, February 4, 2011

Tags @likes Scenario: This scenario is tagged by likes Given this scenario is tagged "@likes" Then the "likes" tag is on the scenarioFriday, February 4, 2011

Tags % cucumber --tags @likesFriday, February 4, 2011

Tags % cucumber --tags ~@likesFriday, February 4, 2011

Tags % cucumber --tags @likes,@ratingsFriday, February 4, 2011

Tags % cucumber --tags @likes --tags @ratingsFriday, February 4, 2011

Tagged HooksFriday, February 4, 2011

Tagged Hooks 1 Before(@given_user) do 2 @user = "This is set" 3 endFriday, February 4, 2011

World Object def log(*args) puts args.join(,) end When /^three (.*) mice$/ do |disability| log disability end When /^three blind (.*)$/ do |animal| log animal endFriday, February 4, 2011

World Object module Log def log(*args) puts args.join(,) end end World(Log) When /^three (.*) mice$/ do |disability| log disability end When /^three blind (.*)$/ do |animal| log animal endFriday, February 4, 2011

Tagged Hooks1 Feature: Using Before and After with tags2 In order to be more effective with cucumber3 As a cucumberist4 You can use Before and After with tags!56 Scenario: Does not want the before step run7 Then the user is not set89 @given_user0 Scenario: Does want the before step run1 Then the user is set Friday, February 4, 2011

Tagged Hooks Then /^the user is( not)? set$/ do |negated| if negated @user.should_not be else @user.should be end endFriday, February 4, 2011

Tagged Hooks $ cucumber features/before_and_after_profile.feature Using the default profile... Feature: Using Before and After with tags In order to be more effective with cucumber As a cucumberist You can use Before and After with tags! Scenario: This scenario does not want the before step run # features/before_and_after_profile.featur Then the user is not set # features/step_definitions/user_steps.rb:1 @given_user Scenario: This scenario wants something set before it runs # features/before_and_after_profile.featur Then the user is set # features/step_definitions/user_steps.rb:1 2 scenarios (2 passed) 2 steps (2 passed) 0m1.525sFriday, February 4, 2011

Tagged Hooks 5 Before(@reviews,@likes) do 6 puts "This is an OR" 7 end 8 9 Before (@reviews, @likes) do 10 puts "This is an AND" 11 end 12 13 Before (~@reviews) do 14 puts "This is NOT" 15 endFriday, February 4, 2011

Special TagsFriday, February 4, 2011

@wip 1 @wip 2 Feature: Resolving ambiguity with --guess 3 4 Scenario: Ambiguous step definitions 5 Given three blind miceFriday, February 4, 2011

@wip % cucumber -p wip % rake cucumber:wip % alias wip=‘cucumber -p wip’Friday, February 4, 2011

@wip<%rerun = File.file?(rerun.txt) ? IO.read(rerunrerun_opts = rerun.to_s.strip.empty? ? "--formatstd_opts = "--format #{ENV[CUCUMBER_FORMAT] ||%>default: <%= std_opts %> featureswip: --tags @wip:3 --wip featuresrerun: <%= rerun_opts %> --format rerun --out reFriday, February 4, 2011

@wip % wip Using the wip profile... Feature: Using the path helper @wip Scenario: Using a regex with the path helper # features/paths.feature:7 Given the following movie: # features/step_definitions/fabrication_steps.rb:37 | title | Gone with the wind | | year | 1939 | When I go to the "Gone with the wind" movie page # features/step_definitions/web_steps.rb:30 Then I should see "Gone with the wind (1939)" # features/step_definitions/web_steps.rb:114 expected #has_content?("Gone with the wind (1939)") to return true, got false (RSpec::Expectations::ExpectationNotMetError) features/paths.feature:12:in `Then I should see "Gone with the wind (1939)" Failing Scenarios: cucumber -p wip features/paths.feature:7 # Scenario: Using a regex with the path helper 1 scenario (1 failed) 3 steps (1 failed, 2 passed) 0m2.245s The --wip switch was used, so the failures were expected. All is good.Friday, February 4, 2011

@no-txn @no-txn Scenario: Sending a message without pusher Given @philip_jay_fry signs in with Twitter And I start a conversation with @t_leela When I reply with "Hi Leela" Then the source is the browserFriday, February 4, 2011

@javascript @javascript @pusher Scenario: Starting a conversation with Pusher Given @philip_jay_fry signs in with Twitter When the browser has subscribed to Pusher And I start a conversation with"@t_leela" Then the source is pusher in the browserFriday, February 4, 2011

Using path_toFriday, February 4, 2011

path_tomodule NavigationHelpers def path_to(page_name) case page_name when /the homes?page/ / else begin page_name =~ /the (.*) page/ path_components = $1.split(/s+/) self.send(path_components.push(path).join(_).to_sym) rescue Object => e raise "Cant find mapping from "#{page_name}" to a path.n" + "Now, go and add a mapping in #{__FILE__}" end end endendWorld(NavigationHelpers)Friday, February 4, 2011

path_to Scenario: Using a regex with the path helper Given the following movie: | title | Gone with the wind | | year | 1939 | When I go to the "Gone with the wind" movie page Then I should see "Gone with the wind (1939)" when /the "([^"]+)" movie page/ movie_path(Movie.find_by_title($1))Friday, February 4, 2011

Building A FactoryFriday, February 4, 2011

SpecificScenario: Domain specific, totally opaque Given a movie When I go to the home page Then I should see "Gone with the wind (1939)"Friday, February 4, 2011

SpecificScenario: Domain specific, totally opaque Given a movie When I go to the home page Then I should see "Gone with the wind (1939)" When /^a movie$/ do Movie.create(title: Gone with the wind, year: 1939) endFriday, February 4, 2011

Imperative Scenario: Way too granular Given a movie And I set the movies title to "Gone with the wind" And I set the movies year to "1939" And I save the movie When I go to the home page Then I should see "Gone with the wind (1939)"Friday, February 4, 2011

Too much like Code Scenario: Too much like code Given a movie exists with { "title" => "Gone with the wind", "year" => "1939" } When I go to the home page Then I should see "Gone with the wind (1939)"Friday, February 4, 2011

Too much like Code Scenario: Too much like code Given a movie exists with { "title" => "Gone with the wind", "year" => "1939" } When I go to the home page Then I should see "Gone with the wind (1939)" When /^a (.+) exists with ({.+})$/ do |model_name, attributes| model = dehumanize(model_name) model.create(eval(attributes)) endFriday, February 4, 2011

Too much like Code Scenario: Too much like code Given a movie exists with { "title" => "Gone with the wind", "year" => "1939" } When I go to the home page Then I should see "Gone with the wind (1939)" When /^a (.+) exists with ({.+})$/ do |model_name, attributes| model = dehumanize(model_name) model.create(eval(attributes)) end Yikes!Friday, February 4, 2011

Too much like Code Scenario: Too much like code Given a movie exists with { "title" => "Gone with the wind", "year" => "1939" } When I go to the home page Then I should see "Gone with the wind (1939)" ` When /^a (.+) exists with ({.+})$/ do |model_name, attributes| model = dehumanize(model_name) model.create(eval(attributes)) endFriday, February 4, 2011

Cleaned UpScenario: Pickle Given a movie exists with title: "Gone with the wind", year: "1939" When I go to the home page Then I should see "Gone with the wind (1939)"Friday, February 4, 2011

Using Tables ruby-1.9.2-p0 :001 > table => | title | year | | Gone with the wind | 1939 | ruby-1.9.2-p0 :002 > table.headers => ["title", "year"] ruby-1.9.2-p0 :003 > table.rows => [["Gone with the wind", "1939"]] ruby-1.9.2-p0 :004 > table.hashes => [{"title"=>"Gone with the wind", "year"=>"1939"}] ruby-1.9.2-p0 :005 > table.rows_hash => {"title"=>"year", "Gone with the wind"=>"1939"}Friday, February 4, 2011

Generic Factory Step module FabricationMethods def create_from_table(model_name, table, extra = {}) fabricator_name = generate_fabricator_name(model_name) is_singular = model_name.to_s.singularize == model_name.to_s hashes = is_singular ? [table.rows_hash] : table.hashes @they = hashes.map do |hash| hash = hash.merge(extra).inject({}) {|h,(k,v)| h.update(k.gsub(/W+/,_).to_sym => v) Fabricate(fabricator_name, hash) end if is_singular @it = @they.last instance_variable_set("@#{fabricator_name}", @it) end end def generate_fabricator_name(model_name) model_name.gsub(/W+/, _).downcase.singularize.to_sym end end World(FabricationMethods) When /^the following ([^"]*):$/ do |model_name, table| create_from_table(model_name, table) endFriday, February 4, 2011

TransformsFriday, February 4, 2011

Step Argument Transform When /^that movie has been liked (d+) times$/ do |count| count.to_i.times do |i| @movie.like! end endFriday, February 4, 2011

Table Transforms Transform /^table:name,actor$/ do |table| table.map_column!(:actor) do |actor_name| Actor.find_by_name(actor_name) end table endFriday, February 4, 2011

Table Transforms Transform /^table:name,actor$/ do |table| table.map_column!(:actor) do |actor_name| Fabricate(:actor, :name => actor_name) end table endFriday, February 4, 2011

Better UI ScopesFriday, February 4, 2011

Shipped Web StepsScenario: Viewing a group When @philip_jay_fry signs in And I go to the “Planet Express” group Then I should see "Planet_Express" within "//h2" And I should see "t_leela" within "//ul/li[@id=t_leela]" And I should see "dr_hjfarnsworth" within "//ul/li[@id=dr_hjfarnsworFriday, February 4, 2011

Shipped Web Steps module WithinHelpers 13def with_scope(locator) 14 locator ? within(locator) { yield } : yield 15end 16 end 17 World(WithinHelpers) 18 27 When /^(?:|I )press "([^"]*)"(?: within "([^"]*)")?$/ do |button, selector| 28 with_scope(selector) do 29 click_button(button) 30 end 31 end 32 33 When /^(?:|I )follow "([^"]*)"(?: within "([^"]*)")?$/ do |link, selector| 34 with_scope(selector) do 35 click_link(link) 36 end 37 end 38 39 When /^(?:|I )fill in "([^"]*)" with "([^"]*)"(?: within "([^"]*)")?$/ do |field 40 with_scope(selector) do 41 fill_in(field, :with => value) 42 end 43 end 44Friday, February 4, 2011

Removing CSS/XPath Scenario: Simple and Direct Given the following movie: | title | Gone with the wind | | year | 1939 | When I go to the home page Then I should see "Gone with the wind (1939)" in the movie list { "in the movie list" => .movies }.each do |within, selector| When /^(.+) #{within}$/ do |step| with_scope(selector) do When step end end endFriday, February 4, 2011

selector_for module HtmlSelectorsHelper def selector_for(scope) case scope when /the body/ "html > body" when /the movie list/ ".movies" else raise "Cant find mapping from "#{scope}" to a selector.n" + "Now, go and add a mapping in #{__FILE__}" end end end World(HtmlSelectorsHelper)Friday, February 4, 2011

Persistent Scopes module PersistentScope def persistent_scope(scope = nil) if scope page.find(scope) @persistent_scope = scope end @persistent_scope end end World(PersistentScope) When /^(.*) within ([^:"]+)$/ do |step, scope| with_scope(persistent_scope(selector_for(scope))) do When step end end When /^also (.*)$/ do |step| fail unless persistent_scope with_scope(persistent_scope) do When step end endFriday, February 4, 2011

Write Better ScenariosFriday, February 4, 2011

ImperativeScenario: Successful animal creation Given Im on the animal creation page When I fill in Name with Alligator And select Phylum as Chordata And fill in Animal Class with Sauropsida And fill in Order with Crocodilia And fill in Family with Alligatoridae And fill in Genus with Alligator And check Lay Eggs And click the Create button Then I should see the notice Thank you for your animal submission! And the page should include the animals name, phylum, animal class,Friday, February 4, 2011

Declarative Scenario: Successful animal creation Given Im on the animal creation page When I add a new animal Then I should see the page for my newly created animal And the notice Thank you for your animal submission!Friday, February 4, 2011

UX Feature: Visitor uses advertiser carousel Background: Given the following advertiser: | name | Lowes | And that advertiser has the following coupons: | description | | Free free free | And the following advertiser: | name | Home Depot | And that advertiser has the following coupons: | description | | Buy three storage bins and get the next 20 absolutely free for a limited time! | When I go to the homepage Scenario: populating the carousel Then I should see "Lowes coupons" within the advertiser carousel And I should see "Free free free" within the advertiser carousel And I should see "Home Depot coupons" within the advertiser carousel And I should see "Buy three storage" within the advertiser carousel Scenario: truncating the coupon copy Then I should see "Buy three storage bins and get the next 20 absolute..." within the advertiser carousel Scenario: viewing all coupons for an advertiser When I follow "Lowes coupons" within the advertiser carousel Then I should see "Coupons for Lowes" And I should see "Free free free" And I should not see "Buy three storage bins" And I should not see "View all Lowes coupons"Friday, February 4, 2011

Outside InFriday, February 4, 2011

Cucumber: The Bad PartsFriday, February 4, 2011

Cucumber: The Good PartFriday, February 4, 2011

Thank you!Friday, February 4, 2011

Cultivating Cucumber

by leshill

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Cultivating Cucumber Document Transcript

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