paper-trail-gem--paper_trail/spec/paper_trail_spec.rb

require "rails_helper"

describe PaperTrail do
  context "default" do
    it "should have versioning off by default" do
      expect(PaperTrail).not_to be_enabled
    end

    it "should turn versioning on in a `with_versioning` block" do
      expect(PaperTrail).not_to be_enabled
      with_versioning do
        expect(PaperTrail).to be_enabled
      end
      expect(PaperTrail).not_to be_enabled
    end

    context "error within `with_versioning` block" do
      it "should revert the value of `PaperTrail.enabled?` to it's previous state" do
        expect(PaperTrail).not_to be_enabled
        expect { with_versioning { raise } }.to raise_error(RuntimeError)
        expect(PaperTrail).not_to be_enabled
      end
    end
  end

  context "`versioning: true`", versioning: true do
    it "should have versioning on by default" do
      expect(PaperTrail).to be_enabled
    end

    it "should keep versioning on after a with_versioning block" do
      expect(PaperTrail).to be_enabled
      with_versioning do
        expect(PaperTrail).to be_enabled
      end
      expect(PaperTrail).to be_enabled
    end
  end

  context "`with_versioning` block at class level" do
    it { expect(PaperTrail).not_to be_enabled }

    with_versioning do
      it "should have versioning on by default" do
        expect(PaperTrail).to be_enabled
      end
    end
    it "should not leak the `enabled?` state into successive tests" do
      expect(PaperTrail).not_to be_enabled
    end
  end

  describe :whodunnit do
    before(:all) { PaperTrail.whodunnit = "foobar" }

    it "should get set to `nil` by default" do
      expect(PaperTrail.whodunnit).to be_nil
    end
  end

  describe :controller_info do
    before(:all) { ::PaperTrail.controller_info = { foo: "bar" } }

    it "should get set to an empty hash before each test" do
      expect(PaperTrail.controller_info).to eq({})
    end
  end
end