block_example_spec.rb

require 'spec_helper'

describe 'block example' do

  let(:thing) { FactoryGirl.create :thing }

  context 'without versioning' do

    before do
      thing.update_attributes name: 'a different name'
    end

    it 'does not create a version' do
      thing.versions.should be_empty
    end

  end

  context 'with versioning' do

    before do
      with_versioning do
        PaperTrail.whodunnit = thing.owner
        thing.update_attributes name: 'a different name'
      end
    end

    it 'creates a version' do
      thing.versions.should_not be_empty
    end

  end

end

metadata_example_spec.rb

require 'spec_helper'

describe 'metadata example' do

  let(:thing) { FactoryGirl.create :thing }

  context 'without versioning' do

    before do
      thing.update_attributes name: 'a different name'
    end

    it 'does not create a version' do
      thing.versions.should be_empty
    end

  end

  context 'with versioning', :versioning do

    before do
      PaperTrail.whodunnit = thing.owner
      thing.update_attributes name: 'a different name'
    end

    it 'creates a version' do
      thing.versions.should_not be_empty
    end

  end

end

paper_trail_support.rb

# spec/support/

def with_versioning
  was_enabled        = PaperTrail.enabled?
  PaperTrail.enabled = true

  begin
    yield
  ensure
    PaperTrail.enabled = was_enabled
  end
end

spec_helper.rb

ENV['RAILS_ENV'] ||= 'test'

require 'rails/application'
require File.expand_path('../../config/environment', __FILE__)

require 'rspec/rails'
require 'capybara/rails'
require 'capybara/rspec'

Dir[Rails.root.join 'spec/support/**/*.rb'].each { |f| require f }

RSpec.configure do |config|
  config.filter_run focus: true
  config.mock_with  :rspec

  config.run_all_when_everything_filtered                = true
  config.treat_symbols_as_metadata_keys_with_true_values = true
  config.use_transactional_fixtures                      = false

  config.before :suite do
    DatabaseCleaner.strategy = :truncation
  end

  config.before :each do
    DatabaseCleaner.clean
    PaperTrail.enabled = false
  end

  config.before :each, versioning: true do
    PaperTrail.enabled = true
  end

end