require "helper"
require "inspec/resource"
require "inspec/resources/grub_conf"

describe "Inspec::Resources::GrubConfig" do

  # Grub2 with `GRUB_DEFAULT=0`
  it "parses correctly with grub2 and `GRUB_DEfAULT=0`" do
    resource = MockLoader.new(:centos7).load_resource("grub_conf")

    resource.kernel.must_include "/vmlinuz-yup-kernel-works"
    resource.initrd.must_equal "/initramfs-yup-initrd-works"
  end

  # Grub2 with `GRUB_DEFAULT=saved`
  it "parses correctly with grub2 and `saved` as the `GRUB_DEFAULT`" do
    resource = MockLoader.new(:centos7).load_resource("grub_conf")

    # Both Grub1 and Grub2 use `/etc/default/grub`.
    # This overrides the Grub1 default for testing.
    resource.instance_variable_set(
      :@defaults_path,
      "/etc/default/grub_with_saved"
    )

    resource.kernel.must_include "/vmlinuz-3.10.0-229.el7.x86_64"
    resource.initrd.must_equal "/initramfs-3.10.0-229.el7.x86_64.img"
  end

  it "parses correctly with grub2 and an invalid grubenv entry" do
    resource = MockLoader.new(:centos7).load_resource("grub_conf")

    # Both Grub1 and Grub2 use `/etc/default/grub`.
    # This overrides the Grub1 default for testing.
    resource.instance_variable_set(
      :@defaults_path,
      "/etc/default/grub_with_saved"
    )

    resource.instance_variable_set(
      :@grubenv_path,
      "/boot/grub2/grubenv_invalid"
    )

    resource.kernel.must_include "/vmlinuz-yup-kernel-works"
    resource.initrd.must_equal "/initramfs-yup-initrd-works"
  end

  # Grub2 with a specified kernel
  it "parses data correctly with grub2 and a specified kernel" do
    resource = MockLoader.new(:centos7).load_resource(
      "grub_conf",
      "/boot/grub2/grub.cfg",
      "CentOS Linux 7 (Core), with Linux 0-rescue"
    )

    resource.kernel.must_include "/vmlinuz-0-rescue"
    resource.initrd.must_equal "/initramfs-0-rescue.img"
  end

  # Legacy Grub
  it "parses correctly with grub1 (aka legacy-grub)" do
    resource = MockLoader.new(:centos6).load_resource("grub_conf")

    resource.kernel.must_include "/vmlinuz-2.6.32-573.7.1.el6.x86_64"
    resource.initrd.must_equal "/initramfs-2.6.32-573.7.1.el6.x86_64.img"
    resource.default.must_equal "0"
    resource.timeout.must_equal "5"
  end

  # Legacy Grub with a specified kernel
  it "parses data correctly with grub1 and a specified kernel" do
    resource = MockLoader.new(:centos6).load_resource(
      "grub_conf",
      "/etc/grub.conf",
      "CentOS 6 (2.6.32-573.el6.x86_64)"
    )

    resource.kernel.must_include "/vmlinuz-2.6.32-573.el6.x86_64"
    resource.initrd.must_equal "/initramfs-2.6.32-573.el6.x86_64.img"
    resource.default.must_equal "0"
    resource.timeout.must_equal "5"
  end
end
