Test generator for after_party tasks

after_party_test_generator.rb

class AfterPartyTestGenerator < Rails::Generators::NamedBase
  source_root File.expand_path('../templates', __FILE__)

  def create_test_file
    @clean_file_name = file_name.gsub(/\d{14}_{1}/, '')
    return file_exist_warning if File.exist?(file_extension)
    template "test_template.erb", file_extension
  end

  private

  def file_extension
    "spec/lib/tasks/deployment/#{@clean_file_name}_spec.rb"
  end

  def file_exist_warning
    puts "A file with name #{file_extension} already exists"
  end
end

test_template.erb

require 'rails_helper'

describe '<%= @clean_file_name %>', type: :task do
  before :each do
    Rake.application.rake_require 'tasks/deployment/<%= file_name %>'
    Rake::Task.define_task(:environment)
  end

  subject { Rake::Task['after_party:<%= @clean_file_name %>'].execute }

  it 'works' do
    expect{ subject }.not_to raise_error
  end
end

USAGE

Description:
    Generates a basic rspec test template for rake after_party task

Example:
    rails generate after_party_test 2019112233_your_task_name

    This will create:
        spec/lib/task/deploy/your_task_name_spec.rb