Fabrication - wrong number of arguments (given 2, expected 0..1)

Wellington DC

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Sep 14, 2018, 6:42:05 AM9/14/18

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Hy Guys!

This is the first time I'm using Fabrication and I'm getting an error that I've been struggling a lot. If someone could help, I'd appreciate a lot.

The error message is this one:

1) Person is valid

Failure/Error: Fabricate(:person)

ArgumentError:

wrong number of arguments (given 2, expected 0..1)

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/active_record.rb:8:in `build_instance'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:13:in `build'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:22:in `create'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:65:in `block in fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:64:in `instance_eval'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:64:in `fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/fabricator.rb:8:in `fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication.rb:49:in `Fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:144:in `block in generate_value'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:97:in `assign_field'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:92:in `assign'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:70:in `method_missing'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:112:in `block in process_attributes'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:109:in `each'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:109:in `process_attributes'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:6:in `build'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/generator/base.rb:22:in `create'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:65:in `block in fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:64:in `instance_eval'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/schematic/definition.rb:64:in `fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication/fabricator.rb:8:in `fabricate'

# /Users/wdcunha/.rvm/gems/ruby-2.5.0/gems/fabrication-2.2.3/lib/fabrication.rb:49:in `Fabricate'

# ./spec/models/person_spec.rb:8:in `block (2 levels) in <top (required)>'

# ./spec/models/person_spec.rb:12:in `block (2 levels) in <top (required)>'

The file spec/models/person_spec.rb is like that:

require 'rails_helper'

RSpec.describe Person, type: :model do

let(:person) do

Fabricate(:person)

end

In the file spec/fabricators/person_fabricator.rb is like that:

Fabricator(:person) do

first_name "Alice"

last_name "Smith"

user

end

If I comment the field lines in this file, nothing changes on the error message that continues the same.

I'm using Rails 5.2.1, Ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-darwin17] and fabrication 2.2.3

In addition, I tried to generate a new person in the console and it is running ok:

2.5.0 :020 > p = Person.new(first_name: "Alice", last_name: "Smith", user_id: 1)

=> #<Person id: nil, first_name: "Alice", last_name: "Smith", created_at: nil, updated_at: nil, user_id: 1>

Paul Elliott

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Sep 14, 2018, 6:45:00 AM9/14/18

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Hey there!

What happens if you try to Fabricate(:person) in the console?

I assume user is a belongs_to relationship on the Person model?

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Wellington DC

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Sep 14, 2018, 10:48:03 AM9/14/18

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Hi Paul!

Thanks for replying first of all.

When I try it in the console, it gives almost the same error message:

2.5.0 :030 > Fabricate(:person)

Traceback (most recent call last):

1: from (irb):30

ArgumentError (wrong number of arguments (given 2, expected 0..1))

About relationship, it is the opposite, user has_many and person belongs_to user. It is developed like that because an user needs to be the owner of contacts that it creates, that's why the relationship is not the contrary.

Paul Elliott

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Sep 14, 2018, 10:54:53 AM9/14/18

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Oh, my bad. I read it then reversed it in my head. Are you using the `protected_attributes` gem in a Rails 5 project by any chance?

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Wellington DC

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Sep 14, 2018, 11:27:51 AM9/14/18

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No Paul, there's no gem like that, see gemfile:

source 'https://rubygems.org'

git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.5.0'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'

gem 'rails', '~> 5.2.0'

# Use postgresql as the database for Active Record

gem 'pg', '>= 0.18', '< 2.0'

# Use Puma as the app server

gem 'puma', '~> 3.11'

# Use SCSS for stylesheets

gem 'sass-rails', '~> 5.0'

# Use Uglifier as compressor for JavaScript assets

gem 'uglifier', '>= 1.3.0'

# See https://github.com/rails/execjs#readme for more supported runtimes

# gem 'mini_racer', platforms: :ruby

# Use CoffeeScript for .coffee assets and views

gem 'coffee-rails', '~> 4.2'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder

gem 'jbuilder', '~> 2.5'

# Use Redis adapter to run Action Cable in production

# gem 'redis', '~> 4.0'

# Use ActiveModel has_secure_password

# gem 'bcrypt', '~> 3.1.7'

# Use ActiveStorage variant

# gem 'mini_magick', '~> 4.8'

# Use Capistrano for deployment

# gem 'capistrano-rails', group: :development

# Reduces boot times through caching; required in config/boot.rb

gem 'bootsnap', '>= 1.1.0', require: false

gem 'unicorn'

# gem 'omniauth'

gem 'omniauth-twitter'

group :development, :test do

gem 'rspec-rails'

# Call 'byebug' anywhere in the code to stop execution and get a debugger console

gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]

gem 'capybara'

gem 'fabrication'

end

group :development do

# Access an interactive console on exception pages or by calling 'console' anywhere in the code.

gem 'web-console', '>= 3.3.0'

gem 'listen', '>= 3.0.5', '< 3.2'

# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring

gem 'spring'

gem 'spring-watcher-listen', '~> 2.0.0'

end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Wellington DC

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Sep 14, 2018, 11:42:26 AM9/14/18

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The same happens with user_spec.rb:

~/Development/JumpStartLab/contact_manager $ rspec spec/models/user_spec.rb

User

has associated people (FAILED - 1)

Failures:

1) User has associated people

Failure/Error: let(:user) { Fabricate(:user) }