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Path: /opt/chef/embedded/lib/ruby/gems/2.7.0/gems/inspec-core-4.22.1/lib/inspec/resources/

Viewing File: gem.rb

# circular: require "inspec/resource"
# but... already being included by inspec/resource.rb

module Inspec::Resources
  class GemPackage < Inspec.resource(1)
    name "gem" # TODO: rename to "rubygem" and provide alias
    supports platform: "unix"
    supports platform: "windows"
    desc "Use the gem InSpec audit resource to test if a global gem package is installed."
    example <<~EXAMPLE
      describe gem('rubocop') do
        it { should be_installed }
        its('version') { should eq '0.33.0' }
      end
    EXAMPLE

    attr_reader :gem_binary

    def initialize(package_name, gem_binary = nil)
      @package_name = package_name
      @gem_binary = case gem_binary # TODO: no. this is not right
                    when nil
                      "gem"
                    when :chef
                      if inspec.os.windows?
                        # TODO: what about chef-dk or other installs?
                        'c:\opscode\chef\embedded\bin\gem.bat'
                      else
                        "/opt/chef/embedded/bin/gem"
                      end
                    when :chef_server
                      "/opt/opscode/embedded/bin/gem"
                    else
                      gem_binary
                    end
      skip_resource "Unable to retrieve gem information" if info.empty?
    end

    def info
      return @info if defined?(@info)

      require "inspec/resources/command"

      cmd = inspec.command("#{@gem_binary} list --local -a -q \^#{@package_name}\$")
      return {} unless cmd.exit_status == 0

      # extract package name and version
      # parses data like winrm (1.3.4, 1.3.3)
      params = /^\s*([^\(]*?)\s*\((.*?)\)\s*$/.match(cmd.stdout.chomp)
      @info = {
        installed: !params.nil?,
        type: "gem",
      }
      return @info unless @info[:installed]

      versions = params[2].split(",").map(&:strip)
      @info[:name] = params[1]
      @info[:version] = versions[0]
      @info[:versions] = versions
      @info
    end

    def installed?
      info[:installed] == true
    end

    def version
      info[:version]
    end

    # this returns an array of strings
    def versions
      info[:versions]
    end

    def to_s
      "gem package #{@package_name}"
    end
  end
end