paper-trail-gem--paper_trail/spec/models/animal_spec.rb

require "spec_helper"

RSpec.describe Animal, type: :model, versioning: true do
  it "baseline test setup" do
    expect(Animal.new).to be_versioned
    expect(Animal.inheritance_column).to eq("species")
  end

  it "works with custom STI inheritance column" do
    animal = Animal.create(name: "Animal")
    animal.update_attributes(name: "Animal from the Muppets")
    animal.update_attributes(name: "Animal Muppet")
    animal.destroy
    dog = Dog.create(name: "Snoopy")
    dog.update_attributes(name: "Scooby")
    dog.update_attributes(name: "Scooby Doo")
    dog.destroy
    cat = Cat.create(name: "Garfield")
    cat.update_attributes(name: "Garfield (I hate Mondays)")
    cat.update_attributes(name: "Garfield The Cat")
    cat.destroy
    expect(PaperTrail::Version.count).to(eq(12))
    expect(animal.versions.count).to(eq(4))
    expect(animal.versions.first.reify).to(be_nil)
    animal.versions[(1..-1)].each do |v|
      expect(v.reify.class.name).to(eq("Animal"))
    end
    dog_versions = PaperTrail::Version.where(item_id: dog.id).order(:created_at)
    expect(dog_versions.count).to(eq(4))
    expect(dog_versions.first.reify).to(be_nil)
    expect(dog_versions.map { |v| v.reify.class.name }).to eq(%w[NilClass Dog Dog Dog])
    cat_versions = PaperTrail::Version.where(item_id: cat.id).order(:created_at)
    expect(cat_versions.count).to(eq(4))
    expect(cat_versions.first.reify).to(be_nil)
    expect(cat_versions.map { |v| v.reify.class.name }).to eq(%w[NilClass Cat Cat Cat])
  end

  it "allows the inheritance_column (species) to be updated" do
    cat = Cat.create!(name: "Leo")
    cat.update_attributes(name: "Spike", species: "Dog")
    dog = Animal.find(cat.id)
    expect(dog).to be_instance_of(Dog)
  end

  context "with callback-methods" do
    context "when only has_paper_trail set in super class" do
      let(:callback_cat) { Cat.create(name: "Markus") }

      it "trails all events" do
        callback_cat.update_attributes(name: "Billie")
        callback_cat.destroy
        expect(callback_cat.versions.collect(&:event)).to eq %w[create update destroy]
      end

      it "does not break reify" do
        callback_cat.destroy
        expect { callback_cat.versions.last.reify }.not_to raise_error
      end
    end
  end
end