From 1e828893f12f79f9f2b2a67245416c4bcad80f4b Mon Sep 17 00:00:00 2001 From: Daniel Schierbeck Date: Fri, 13 Jan 2012 17:44:27 +0100 Subject: [PATCH] Make the examples use Ruby syntax highlighting on GitHub. --- GETTING_STARTED.md | 632 +++++++++++++++++++++++++-------------------- 1 file changed, 354 insertions(+), 278 deletions(-) diff --git a/GETTING_STARTED.md b/GETTING_STARTED.md index 016bd98..2f3fe98 100644 --- a/GETTING_STARTED.md +++ b/GETTING_STARTED.md @@ -6,11 +6,15 @@ Update Your Gemfile If you're using Rails, you'll need to change the required version of `factory_girl_rails`: - gem "factory_girl_rails", "~> 1.2" +```ruby +gem "factory_girl_rails", "~> 1.2" +``` If you're *not* using Rails, you'll just have to change the required version of `factory_girl`: - gem "factory_girl", "~> 2.1.0" +```ruby +gem "factory_girl", "~> 2.1.0" +``` Once your Gemfile is updated, you'll want to update your bundle. @@ -19,28 +23,30 @@ Defining factories Each factory has a name and a set of attributes. The name is used to guess the class of the object by default, but it's possible to explicitly specify it: - # This will guess the User class - FactoryGirl.define do - factory :user do - first_name 'John' - last_name 'Doe' - admin false - end +```ruby +# This will guess the User class +FactoryGirl.define do + factory :user do + first_name 'John' + last_name 'Doe' + admin false + end - # This will use the User class (Admin would have been guessed) - factory :admin, :class => User do - first_name 'Admin' - last_name 'User' - admin true - end + # This will use the User class (Admin would have been guessed) + factory :admin, :class => User do + first_name 'Admin' + last_name 'User' + admin true + end - # The same, but using a string instead of class constant - factory :admin, :class => 'user' do - first_name 'Admin' - last_name 'User' - admin true - end - end + # The same, but using a string instead of class constant + factory :admin, :class => 'user' do + first_name 'Admin' + last_name 'User' + admin true + end +end +``` It is highly recommended that you have one factory for each class that provides the simplest set of attributes necessary to create an instance of that class. If you're creating ActiveRecord objects, that means that you should only provide attributes that are required through validations and that do not have defaults. Other factories can be created through inheritance to cover common scenarios for each class. @@ -59,49 +65,57 @@ Using factories factory\_girl supports several different build strategies: build, create, attributes\_for and stub: - # Returns a User instance that's not saved - user = FactoryGirl.build(:user) +```ruby +# Returns a User instance that's not saved +user = FactoryGirl.build(:user) - # Returns a saved User instance - user = FactoryGirl.create(:user) +# Returns a saved User instance +user = FactoryGirl.create(:user) - # Returns a hash of attributes that can be used to build a User instance - attrs = FactoryGirl.attributes_for(:user) +# Returns a hash of attributes that can be used to build a User instance +attrs = FactoryGirl.attributes_for(:user) - # Returns an object with all defined attributes stubbed out - stub = FactoryGirl.build_stubbed(:user) +# Returns an object with all defined attributes stubbed out +stub = FactoryGirl.build_stubbed(:user) - # Passing a block to any of the methods above will yield the return object - FactoryGirl.create(:user) do |user| - user.posts.create(attributes_for(:post)) - end +# Passing a block to any of the methods above will yield the return object +FactoryGirl.create(:user) do |user| + user.posts.create(attributes_for(:post)) +end +``` No matter which strategy is used, it's possible to override the defined attributes by passing a hash: - # Build a User instance and override the first_name property - user = FactoryGirl.build(:user, :first_name => 'Joe') - user.first_name - # => "Joe" +```ruby +# Build a User instance and override the first_name property +user = FactoryGirl.build(:user, :first_name => 'Joe') +user.first_name +# => "Joe" +``` If repeating "FactoryGirl" is too verbose for you, you can mix the syntax methods in: - # rspec - RSpec.configure do |config| - config.include FactoryGirl::Syntax::Methods - end +```ruby +# rspec +RSpec.configure do |config| + config.include FactoryGirl::Syntax::Methods +end - # Test::Unit - class Test::Unit::TestCase - include Factory::Syntax::Methods - end +# Test::Unit +class Test::Unit::TestCase + include Factory::Syntax::Methods +end +``` This would allow you to write: - describe User, "#full_name" do - subject { create(:user, :first_name => "John", :last_name => "Doe") } +```ruby +describe User, "#full_name" do + subject { create(:user, :first_name => "John", :last_name => "Doe") } - its(:full_name) { should == "John Doe" } - end + its(:full_name) { should == "John Doe" } +end +``` Lazy Attributes --------------- @@ -112,73 +126,81 @@ attributes that must be dynamically generated) will need values assigned each time an instance is generated. These "lazy" attributes can be added by passing a block instead of a parameter: - factory :user do - # ... - activation_code { User.generate_activation_code } - date_of_birth { 21.years.ago } - end +```ruby +factory :user do + # ... + activation_code { User.generate_activation_code } + date_of_birth { 21.years.ago } +end +``` Aliases ------- Aliases allow you to use named associations more easily. - factory :user, :aliases => [:author, :commenter] do - first_name "John" - last_name "Doe" - date_of_birth { 18.years.ago } - end +```ruby +factory :user, :aliases => [:author, :commenter] do + first_name "John" + last_name "Doe" + date_of_birth { 18.years.ago } +end - factory :post do - author - # instead of - # association :author, :factory => :user - title "How to read a book effectively" - body "There are five steps involved." - end +factory :post do + author + # instead of + # association :author, :factory => :user + title "How to read a book effectively" + body "There are five steps involved." +end - factory :comment do - commenter - # instead of - # association :commenter, :factory => :user - body "Great article!" - end +factory :comment do + commenter + # instead of + # association :commenter, :factory => :user + body "Great article!" +end +``` Dependent Attributes -------------------- Attributes can be based on the values of other attributes using the proxy that is yielded to lazy attribute blocks: - factory :user do - first_name 'Joe' - last_name 'Blow' - email { "#{first_name}.#{last_name}@example.com".downcase } - end +```ruby +factory :user do + first_name 'Joe' + last_name 'Blow' + email { "#{first_name}.#{last_name}@example.com".downcase } +end - FactoryGirl.create(:user, :last_name => 'Doe').email - # => "joe.doe@example.com" +FactoryGirl.create(:user, :last_name => 'Doe').email +# => "joe.doe@example.com" +``` Transient Attributes -------------------- There may be times where your code can be DRYed up by passing in transient attributes to factories. - factory :user do - ignore do - rockstar true - upcased { false } - end +```ruby +factory :user do + ignore do + rockstar true + upcased { false } + end - name { "John Doe#{" - Rockstar" if rockstar}" } - email { "#{name.downcase}@example.com" } + name { "John Doe#{" - Rockstar" if rockstar}" } + email { "#{name.downcase}@example.com" } - after_create do |user, proxy| - user.name.upcase! if proxy.upcased - end - end + after_create do |user, proxy| + user.name.upcase! if proxy.upcased + end +end - FactoryGirl.create(:user, :upcased => true).name - #=> "JOHN DOE - ROCKSTAR" +FactoryGirl.create(:user, :upcased => true).name +#=> "JOHN DOE - ROCKSTAR" +``` Static and dynamic attributes can be ignored. Ignored attributes will be ignored within attributes\_for and won't be set on the model, even if the attribute @@ -194,68 +216,80 @@ Associations It's possible to set up associations within factories. If the factory name is the same as the association name, the factory name can be left out. - factory :post do - # ... - author - end +```ruby +factory :post do + # ... + author +end +``` You can also specify a different factory or override attributes: - factory :post do - # ... - association :author, :factory => :user, :last_name => 'Writely' - end +```ruby +factory :post do + # ... + association :author, :factory => :user, :last_name => 'Writely' +end +``` The behavior of the association method varies depending on the build strategy used for the parent object. - # Builds and saves a User and a Post - post = FactoryGirl.create(:post) - post.new_record? # => false - post.author.new_record? # => false +```ruby +# Builds and saves a User and a Post +post = FactoryGirl.create(:post) +post.new_record? # => false +post.author.new_record? # => false - # Builds and saves a User, and then builds but does not save a Post - post = FactoryGirl.build(:post) - post.new_record? # => true - post.author.new_record? # => false +# Builds and saves a User, and then builds but does not save a Post +post = FactoryGirl.build(:post) +post.new_record? # => true +post.author.new_record? # => false +``` To not save the associated object, specify :method => :build in the factory: - factory :post do - # ... - association :author, :factory => :user, :method => :build - end +```ruby +factory :post do + # ... + association :author, :factory => :user, :method => :build +end - # Builds a User, and then builds a Post, but does not save either - post = FactoryGirl.build(:post) - post.new_record? # => true - post.author.new_record? # => true +# Builds a User, and then builds a Post, but does not save either +post = FactoryGirl.build(:post) +post.new_record? # => true +post.author.new_record? # => true +``` Inheritance ----------- You can easily create multiple factories for the same class without repeating common attributes by nesting factories: - factory :post do - title 'A title' +```ruby +factory :post do + title 'A title' - factory :approved_post do - approved true - end - end + factory :approved_post do + approved true + end +end - approved_post = FactoryGirl.create(:approved_post) - approved_post.title # => 'A title' - approved_post.approved # => true +approved_post = FactoryGirl.create(:approved_post) +approved_post.title # => 'A title' +approved_post.approved # => true +``` You can also assign the parent explicitly: - factory :post do - title 'A title' - end +```ruby +factory :post do + title 'A title' +end - factory :approved_post, :parent => :post do - approved true - end +factory :approved_post, :parent => :post do + approved true +end +``` As mentioned above, it's good practice to define a basic factory for each class with only the attributes required to create it. Then, create more specific @@ -270,49 +304,61 @@ generated using sequences. Sequences are defined by calling sequence in a definition block, and values in a sequence are generated by calling FactoryGirl.generate: - # Defines a new sequence - FactoryGirl.define do - sequence :email do |n| - "person#{n}@example.com" - end - end +```ruby +# Defines a new sequence +FactoryGirl.define do + sequence :email do |n| + "person#{n}@example.com" + end +end - FactoryGirl.generate :email - # => "person1@example.com" +FactoryGirl.generate :email +# => "person1@example.com" - FactoryGirl.generate :email - # => "person2@example.com" +FactoryGirl.generate :email +# => "person2@example.com" +``` Sequences can be used as attributes: - factory :user do - email - end +```ruby +factory :user do + email +end +``` Or in lazy attributes: - factory :invite do - invitee { FactoryGirl.generate(:email) } - end +```ruby +factory :invite do + invitee { FactoryGirl.generate(:email) } +end +``` And it's also possible to define an in-line sequence that is only used in a particular factory: - factory :user do - sequence(:email) {|n| "person#{n}@example.com" } - end +```ruby +factory :user do + sequence(:email) {|n| "person#{n}@example.com" } +end +``` You can also override the initial value: - factory :user do - sequence(:email, 1000) {|n| "person#{n}@example.com" } - end +```ruby +factory :user do + sequence(:email, 1000) {|n| "person#{n}@example.com" } +end +``` Without a block, the value will increment itself, starting at its initial value: - factory :post do - sequence(:position) - end +```ruby +factory :post do + sequence(:position) +end +``` Traits ------ @@ -320,107 +366,117 @@ Traits Traits allow you to group attributes together and then apply them to any factory. - factory :user, :aliases => [:author] +```ruby +factory :user, :aliases => [:author] - factory :story do - title "My awesome story" - author +factory :story do + title "My awesome story" + author - trait :published do - published true - end + trait :published do + published true + end - trait :unpublished do - published false - end + trait :unpublished do + published false + end - trait :week_long_publishing do - start_at { 1.week.ago } - end_at { Time.now } - end + trait :week_long_publishing do + start_at { 1.week.ago } + end_at { Time.now } + end - trait :month_long_publishing do - start_at { 1.month.ago } - end_at { Time.now } - end + trait :month_long_publishing do + start_at { 1.month.ago } + end_at { Time.now } + end - factory :week_long_published_story, :traits => [:published, :week_long_publishing] - factory :month_long_published_story, :traits => [:published, :month_long_publishing] - factory :week_long_unpublished_story, :traits => [:unpublished, :week_long_publishing] - factory :month_long_unpublished_story, :traits => [:unpublished, :month_long_publishing] - end + factory :week_long_published_story, :traits => [:published, :week_long_publishing] + factory :month_long_published_story, :traits => [:published, :month_long_publishing] + factory :week_long_unpublished_story, :traits => [:unpublished, :week_long_publishing] + factory :month_long_unpublished_story, :traits => [:unpublished, :month_long_publishing] +end +``` Traits can be used as attributes: - factory :week_long_published_story_with_title, :parent => :story do - published - week_long_publishing - title { "Publishing that was started at {start_at}" } - end +```ruby +factory :week_long_published_story_with_title, :parent => :story do + published + week_long_publishing + title { "Publishing that was started at {start_at}" } +end +``` Traits that define the same attributes won't raise AttributeDefinitionErrors; the trait that defines the attribute latest gets precedence. - factory :user do - name "Friendly User" - login { name } +```ruby +factory :user do + name "Friendly User" + login { name } - trait :male do - name "John Doe" - gender "Male" - login { "#{name} (M)" } - end + trait :male do + name "John Doe" + gender "Male" + login { "#{name} (M)" } + end - trait :female do - name "Jane Doe" - gender "Female" - login { "#{name} (F)" } - end + trait :female do + name "Jane Doe" + gender "Female" + login { "#{name} (F)" } + end - trait :admin do - admin true - login { "admin-#{name}" } - end + trait :admin do + admin true + login { "admin-#{name}" } + end - factory :male_admin, :traits => [:male, :admin] # login will be "admin-John Doe" - factory :female_admin, :traits => [:admin, :female] # login will be "Jane Doe (F)" - end + factory :male_admin, :traits => [:male, :admin] # login will be "admin-John Doe" + factory :female_admin, :traits => [:admin, :female] # login will be "Jane Doe (F)" +end +``` You can also override individual attributes granted by a trait in subclasses. - factory :user do - name "Friendly User" - login { name } +```ruby +factory :user do + name "Friendly User" + login { name } - trait :male do - name "John Doe" - gender "Male" - login { "#{name} (M)" } - end + trait :male do + name "John Doe" + gender "Male" + login { "#{name} (M)" } + end - factory :brandon do - male - name "Brandon" - end - end + factory :brandon do + male + name "Brandon" + end +end +``` Traits can also be passed in as a list of symbols when you construct an instance from FactoryGirl. - factory :user do - name "Friendly User" +```ruby +factory :user do + name "Friendly User" - trait :male do - name "John Doe" - gender "Male" - end + trait :male do + name "John Doe" + gender "Male" + end - trait :admin do - admin true - end - end + trait :admin do + admin true + end +end - # creates an admin user with gender "Male" and name "Jon Snow" - FactoryGirl.create(:user, :admin, :male, :name => "Jon Snow") +# creates an admin user with gender "Male" and name "Jon Snow" +FactoryGirl.create(:user, :admin, :male, :name => "Jon Snow") +``` This ability works with `build`, `build_stubbed`, `attributes_for`, and `create`. @@ -435,26 +491,32 @@ factory\_girl makes available three callbacks for injecting some code: Examples: - # Define a factory that calls the generate_hashed_password method after it is built - factory :user do - after_build { |user| generate_hashed_password(user) } - end +```ruby +# Define a factory that calls the generate_hashed_password method after it is built +factory :user do + after_build { |user| generate_hashed_password(user) } +end +``` Note that you'll have an instance of the user in the block. This can be useful. You can also define multiple types of callbacks on the same factory: - factory :user do - after_build { |user| do_something_to(user) } - after_create { |user| do_something_else_to(user) } - end +```ruby +factory :user do + after_build { |user| do_something_to(user) } + after_create { |user| do_something_else_to(user) } +end +``` Factories can also define any number of the same kind of callback. These callbacks will be executed in the order they are specified: - factory :user do - after_create { this_runs_first } - after_create { then_this } - end +```ruby +factory :user do + after_create { this_runs_first } + after_create { then_this } +end +``` Calling FactoryGirl.create will invoke both after\_build and after\_create callbacks. @@ -468,35 +530,41 @@ modify that factory instead of creating a child factory and adding attributes th If a gem were to give you a User factory: - FactoryGirl.define do - factory :user do - full_name "John Doe" - sequence(:username) {|n| "user#{n}" } - password "password" - end - end +```ruby +FactoryGirl.define do + factory :user do + full_name "John Doe" + sequence(:username) {|n| "user#{n}" } + password "password" + end +end +``` Instead of creating a child factory that added additional attributes: - FactoryGirl.define do - factory :application_user, :parent => :user do - full_name { Faker::Name.name } - date_of_birth { 21.years.ago } - gender "Female" - health 90 - end - end +```ruby +FactoryGirl.define do + factory :application_user, :parent => :user do + full_name { Faker::Name.name } + date_of_birth { 21.years.ago } + gender "Female" + health 90 + end +end +``` You could modify that factory instead. - FactoryGirl.modify do - factory :user do - full_name { Faker::Name.name } - date_of_birth { 21.years.ago } - gender "Female" - health 90 - end - end +```ruby +FactoryGirl.modify do + factory :user do + full_name { Faker::Name.name } + date_of_birth { 21.years.ago } + gender "Female" + health 90 + end +end +``` When modifying a factory, you can change any of the attributes you want (aside from callbacks). @@ -510,20 +578,26 @@ Building or Creating Multiple Records Sometimes, you'll want to create or build multiple instances of a factory at once. - built_users = FactoryGirl.build_list(:user, 25) - created_users = FactoryGirl.create_list(:user, 25) +```ruby +built_users = FactoryGirl.build_list(:user, 25) +created_users = FactoryGirl.create_list(:user, 25) +``` These methods will build or create a specific amount of factories and return them as an array. To set the attributes for each of the factories, you can pass in a hash as you normally would. - twenty_year_olds = FactoryGirl.build_list(:user, 25, :date_of_birth => 20.years.ago) +```ruby +twenty_year_olds = FactoryGirl.build_list(:user, 25, :date_of_birth => 20.years.ago) +``` Cucumber Integration -------------------- factory\_girl ships with step definitions that make calling factories from Cucumber easier. To use them, add the following to features/support/env.rb: - require 'factory_girl/step_definitions' +```ruby +require 'factory_girl/step_definitions' +``` Alternate Syntaxes ------------------ @@ -533,15 +607,17 @@ common feature set. Because of this factory\_girl supports "syntax layers" which provide alternate interfaces. See Factory::Syntax for information about the various layers available. For example, the Machinist-style syntax is popular: - require 'factory_girl/syntax/blueprint' - require 'factory_girl/syntax/make' - require 'factory_girl/syntax/sham' +```ruby +require 'factory_girl/syntax/blueprint' +require 'factory_girl/syntax/make' +require 'factory_girl/syntax/sham' - Sham.email {|n| "#{n}@example.com" } +Sham.email {|n| "#{n}@example.com" } - User.blueprint do - name { 'Billy Bob' } - email { Sham.email } - end +User.blueprint do + name { 'Billy Bob' } + email { Sham.email } +end - User.make(:name => 'Johnny') +User.make(:name => 'Johnny') +``` \ No newline at end of file