require 'spec_helper'

module Omnibus
  describe Compressor::TGZ do
    let(:project) do
      Project.new.tap do |project|
        project.name('project')
        project.homepage('https://example.com')
        project.install_dir('/opt/project')
        project.build_version('1.2.3')
        project.build_iteration('2')
        project.maintainer('Chef Software')
      end
    end

    subject { described_class.new(project) }

    let(:project_root) { File.join(tmp_path, 'project/root') }
    let(:package_dir)  { File.join(tmp_path, 'package/dir') }
    let(:staging_dir)  { File.join(tmp_path, 'staging/dir') }

    before do
      create_directory(project_root)
      create_directory(package_dir)
      create_directory(staging_dir)

      allow(project).to receive(:packager)
        .and_return(Packager::PKG.new(project))

      Config.project_root(project_root)
      Config.package_dir(package_dir)

      allow(subject).to receive(:staging_dir)
        .and_return(staging_dir)

      allow(subject).to receive(:shellout!)
    end

    describe '#package_name' do
      it 'returns the name of the packager' do
        expect(subject.package_name).to eq('project-1.2.3-2.pkg.tar.gz')
      end
    end

    describe '#write_tgz' do
      before do
        File.open("#{staging_dir}/project-1.2.3-2.pkg", 'wb') do |f|
          f.write " "*1_000_000
        end
      end

      it 'generates the file' do
        subject.write_tgz
        expect("#{staging_dir}/project-1.2.3-2.pkg.tar.gz").to be_a_file
      end

      it 'has the correct content' do
        subject.write_tgz
        file = File.open("#{staging_dir}/project-1.2.3-2.pkg.tar.gz", 'rb')
        contents = file.read
        file.close

        expect(contents).to include("\x1F\x8B\b\x00".force_encoding('ASCII-8BIT'))
      end
    end
  end
end