rspec-jumpstart

RSpec 3 code generator toward existing Ruby code. This gem will help you working on existing legacy code which has no tests.

Installation

https://rubygems.org/gems/rspec-jumpstart

gem install rspec-jumpstart

Usage

rspec-jumpstart ./app
rspec-jumpstart ./lib
rspec-jumpstart ./lib/yourapp/util.rb

Options

$ rspec-jumpstart -h
Usage: rspec-jumpstart [options]
    -f                               Create if absent or append to the existing spec
        --force
    -n                               Dry run mode (shows generated code to console)
        --dry-run
    -r                               Run in Rails mode
        --rails
    -o VAL                           Output directory (default: ./spec)
        --output-dir VAL
    -D VAL                           Delta template path (e.g. ./rails_controller_delta.erb)
        --delta-template VAL
    -F VAL                           Full template path (e.g. ./rails_controller_full.erb)
        --full-template VAL
    -v                               Print version
        --version

Output example

Unfortunately, lib/foo/bar_baz.rb has no test. That's too bad...

module Foo
  class BarBaz

    def self.xxx(a, b = "aaa")
    end

    def yyy
    end

    private

    def zzz(a)
    end

  end
end

OK, run rspec-jumpstart now!

$ rspec-jumpstart lib/foo/bar_baz.rb
./spec/foo/bar_baz_spec.rb created.

spec/foo/bar_baz_spec.rb will be created as follows.

# -*- encoding: utf-8 -*-
require 'spec_helper'
require 'foo/bar_baz'

describe Foo::BarBaz do

  # TODO: auto-generated
  describe '#xxx' do
    it 'works' do
      a = double('a')
      b = double('b')
      result = Foo::BarBaz.xxx(a, b)
      expect(result).not_to be_nil
    end
  end

  # TODO: auto-generated
  describe '#yyy' do
    it 'works' do
      bar_baz = Foo::BarBaz.new
      result = bar_baz.yyy
      expect(result).not_to be_nil
    end
  end

end

Appending lacking test templates

-f option allows appending lacking test templates to existing specs.

For instance, additional_ops method is added after spec creation.

module Foo
  class BarBaz

    def self.xxx(a, b = "aaa")
    end

    def yyy
    end

    def additional_ops
    end

    private

    def zzz(a)
    end

  end
end

Execute command.

rspec-jumpstart -f lib/foo/bar_baz.rb

The following code will be appended.

  # TODO: auto-generated
  describe '#additional_ops' do
    it 'works' do
      bar_baz = Foo::BarBaz.new
      result = bar_baz.additional_ops
      expect(result).not_to be_nil
    end
  end

Rails mode

In Rails mode, rspec-jumpstart generates Rails way spec code for controllers and helpers.

$ rspec-jumpstart -r app/controllers/root_controller.rb

Output for scaffold:

# -*- encoding: utf-8 -*-

require 'rails_helper'

describe CommentsController do

  # TODO: auto-generated
  describe 'GET index' do
    it 'works' do
      get :index, {}, {}
      expect(response.status).to eq(200)
    end
  end

  # TODO: auto-generated
  describe 'GET show' do
    it 'works' do
      get :show, {}, {}
      expect(response.status).to eq(200)
    end
  end

  # TODO: auto-generated
  describe 'GET new' do
    it 'works' do
      get :new, {}, {}
      expect(response.status).to eq(200)
    end
  end

  # TODO: auto-generated
  describe 'GET edit' do
    it 'works' do
      get :edit, {}, {}
      expect(response.status).to eq(200)
    end
  end

  # TODO: auto-generated
  describe 'POST create' do
    it 'works' do
      post :create, {}, {}
      expect(response.status).to eq(200)
    end
  end

  # TODO: auto-generated
  describe 'PUT update' do
    it 'works' do
      put :update, {}, {}
      expect(response.status).to eq(200)
    end
  end

  # TODO: auto-generated
  describe 'DELETE destroy' do
    it 'works' do
      delete :destroy, {}, {}
      expect(response.status).to eq(200)
    end
  end

end

Customizable code template

Try the template_samples.

ruby -Ilib bin/rspec-jumpstart --delta-template=samples/delta_template.erb --full-template=samples/full_template.erb lib/foo.rb -n

When you use customized templates for your apps, gem install rspec-jumpstart and do like this:

rspec-jumpstart lib -D misc/delta_template.erb -F misc/full_template.erb

Original work

Many thanks to Kazuhiro Sera for rspec-kickstarter.

RubyKaigi 2013

Lightning talk about rspec-kickstarter at RubyKaigi 2013

http://rubykaigi.org/2013/lightning_talks#seratch

https://speakerdeck.com/seratch/a-test-code-generator-for-rspec-users

Related Projects

Vintage fork

https://github.com/ifad/rspec-kickstarter-vintage

This fork supports ruby 1.8.7 and RSpec 1.x with the old syntax.

ToFactory

https://github.com/markburns/to_factory

ToFactory is a FactoryGirl's factories code generator for existing projects.

License

Copyright (c) 2018 - Tim Chambers

MIT License

https://github.com/hintmedia/rspec-jumpstart/blob/master/LICENSE.txt