inspec/test/unit/resources/etc_hosts_test.rb

require "helper"
require "inspec/resource"
require "inspec/resources/etc_hosts"

describe "Inspec::Resources::EtcHosts" do
  let(:resource) { load_resource("etc_hosts") }

  let(:all_v4_hosts) do
    %w{localhost localhost.localdomain localhost4 localhost4.localdomain4}
  end

  let(:all_v6_hosts) do
    %w{localhost localhost.localdomain localhost6 localhost6.localdomain6}
  end

  it "Verify etc_hosts filtering by `ip_address`" do
    entries = resource.where { ip_address == "127.0.0.1" }
    _(entries.primary_name).must_equal ["localhost"]
    _(entries.all_host_names).must_equal [all_v4_hosts]
  end

  it "Verify etc_hosts filtering by `canonical_hostname`"  do
    entries = resource.where { primary_name == "localhost" }
    _(entries.ip_address).must_equal ["127.0.0.1", "::1"]
    _(entries.all_host_names).must_equal [all_v4_hosts, all_v6_hosts]
  end

  it "Verify etc_hosts filtering by `all_host_names`" do
    # direct reference all_v4_hosts fail in filter scope
    expected_hosts = all_v4_hosts

    entries = resource.where { all_host_names == expected_hosts }
    _(entries.ip_address).must_equal ["127.0.0.1"]
    _(entries.primary_name).must_equal ["localhost"]
  end

  it "Verify etc_hosts with no `all_host_names`" do
    entries = resource.where { ip_address == "127.0.0.5" }
    _(entries.primary_name).must_equal ["randomhost"]
    _(entries.all_host_names).must_equal [["randomhost"]]
  end
end