describe Hbc::Container::Dmg, :cask do describe "#mount" do let(:transmission) { Hbc::CaskLoader.load(cask_path("local-transmission")) } subject(:dmg) { described_class.new(transmission, Pathname(transmission.url.path)) } it "does not store nil mounts for dmgs with extra data" do dmg.mount do |mounts| begin expect(mounts).not_to include nil ensure mounts.each(&dmg.public_method(:eject)) end end end end end