all_factories_spec.rb

require 'spec_helper'

RSpec.describe FactoryGirl do

  # convention: "base" factories return valid models.
  #   without these tests, factories with invalid associations are difficult to identify and debug
  #  Note: performs build, not create.
  describe 'all factories,' do
    factories_to_skip = {}

    FactoryGirl.factories.each do |factory|
      it 'should be valid' do
        reason_to_skip = factories_to_skip[factory.name.to_sym]
        if reason_to_skip
          pending "PENDING: skipping Factory(:#{factory_name}), due to '#{reason_to_skip}'"
        else
          resource = factory.run(:build, {})
          # Note: attempted to use be_valid, but errors.full_messages was empty
          expect(resource.valid?).to be(true), resource.errors.full_messages.to_s
        end
      end
    end
  end
end

Updated for rspec 3.4.x