require "rails/version"
require "rspec/rails"
require "ammeter/init"

TMP_GENERATOR_PATH = File.expand_path("generator-tmp", __dir__)

shared_examples "a generator" do
  destination TMP_GENERATOR_PATH
  before { prepare_destination }

  let(:gen) { generator %w[Yummy::Bacon Yummy::BaconTransition] }

  it "invokes create_model_file method" do
    expect(gen).to receive(:create_model_file)
    gen.invoke_all
  end

  describe "it runs the generator and check things out" do
    before { run_generator %w[Yummy::Bacon Yummy::BaconTransition] }

    describe "it generates a correctly named file" do
      subject { file(migration_name) }

      it { is_expected.to be_a_migration }
    end
  end
end

RSpec.configure do |config|
  config.after :all do
    FileUtils.rm_rf(TMP_GENERATOR_PATH)
  end
end