require 'spec_helper'

require 'fileutils'
require 'tmpdir'

describe WhippedCream::CLI do
  subject { cli }
  let(:cli) { described_class.new }

  let(:plugin_filename) { File.join(tmpdir, "garage.rb") }
  let(:plugin_string) {
    <<-PLUGIN
        name "Garage"

        button "Open/Close", pin: 1
    PLUGIN
  }
  let(:tmpdir) { Dir.mktmpdir }

  before do
    File.open(plugin_filename, 'w') { |file| file.write plugin_string }
  end

  after do
    FileUtils.rm_rf tmpdir
  end

  describe "#demo" do
    it "launches a web server with an example plugin" do
      expect(Rack::Server).to receive(:start)

      cli.demo
    end
  end

  describe "#usage" do
    it "displays a banner and help" do
      expect(cli).to receive(:puts).exactly(2).times
      expect(cli).to receive(:help)

      cli.usage
    end
  end

  describe "#start" do
    it "starts a server for the plugin" do
      expect(Rack::Server).to receive(:start)

      cli.start(plugin_filename)
    end
  end
end