inspec/test/unit/resources/virtualization_test.rb

require 'helper'
require 'inspec/resource'

describe 'Inspec::Resources::Virtualization' do
  def mock_proc(mocked_files)
    proc do |filename|
      OpenStruct.new(
        :exist? => mocked_files.include?(filename) ? false : true
      )
    end
  end

  it 'fails the resource if OS is not Linux' do
    mocked_files = []
    mock_loader = MockLoader.new(:windows)
    mock_loader.backend.stub :file, mock_proc(mocked_files) do
      mock_resource = mock_loader.load_resource('virtualization')
      mock_resource.resource_failed?.must_equal true
    end
  end

  it 'returns nil for all properties if no virutalization platform is found' do
    mocked_files = [
      '/proc/xen/capabilities',
      '/proc/modules',
      '/proc/cpuinfo',
      '/sys/devices/virtual/misc/kvm',
      '/proc/bc/0',
      '/proc/vz',
      '/proc/bus/pci/devices',
      '/proc/self/status',
      '/proc/self/cgroup',
      '/.dockerenv',
      '/.dockerinit',
      '/dev/lxd/sock',
      '/var/lib/lxd/devlxd',
    ]

    mock_loader = MockLoader.new(:ubuntu)
    mock_loader.backend.stub :file, mock_proc(mocked_files) do
      mock_resource = mock_loader.load_resource('virtualization')
      mock_resource.system.must_be_nil
      mock_resource.role.must_be_nil
    end
  end
end