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Factory Bot cheatsheet

 2 years ago
source link: https://devhints.io/factory_bot
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Introduction

Factory Bot is a helper for writing factories for Ruby tests. It was previously known as Factory Girl. For older versions, use FactoryGirl instead of FactoryBot.

Defining factories

FactoryBot.define do
  factory :user do
    first_name { 'John' }
    last_name  { 'Doe' }
    birthdate  { 21.years.ago }
    admin { false }

    sequence(:username) { |n| "user#{n}" }
  end
end

See: Defining factories

Extra options

Custom class names

factory :user, class: 'User' do
  ···
end

Aliases

factory :user, aliases: [:author] do
  ···
end

Using

Build a model

FactoryBot.build(:user)

Other ways

build(:user)           # → model (not saved)
create(:user)          # → model (saved)
attributes_for(:user)  # → hash
build_stubbed(:user)   # stubbed out attributes

With options

build(:user, name: 'John')

Lists

create_list(:user, 3)
build_list(:user, 3)

report

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