src/chromiumos/tast/local/bundles/cros/firmware/fwupd_powerd_startup.go

// Copyright 2021 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package firmware

import (
	"context"
	"io/ioutil"
	"path/filepath"
	"regexp"

	"chromiumos/tast/common/testexec"
	"chromiumos/tast/errors"
	"chromiumos/tast/shutil"
	"chromiumos/tast/testing"
)

const (
	targetStr = `.*powerd:\s{1,}Flags:.*Enabled`
)

func init() {
	testing.AddTest(&testing.Test{
		Func: FwupdPowerdStartup,
		Desc: "Checks that the powerd plugin is enabled",
		Contacts: []string{
			"gpopoola@google.com",       // Test Author
			"chromeos-fwupd@google.com", // CrOS FWUPD
		},
		Attr:         []string{"group:mainline", "informational"},
		SoftwareDeps: []string{"fwupd"},
	})
}

// checkForPowerdStr verifies that powerd was found among enabled plugins */
func checkForPowerdStr(output []byte) error {
	matched, err := regexp.Match(targetStr, output)
	if err != nil {
		return err
	}
	if !matched {
		return errors.New("powerd was not found among enabled plugins")
	}
	return nil
}

// FwupdPowerdStartup runs fwupdmgr get-plugins, retrieves the output, and
// checks for powerd
func FwupdPowerdStartup(ctx context.Context, s *testing.State) {
	cmd := testexec.CommandContext(ctx, "fwupdmgr", "get-plugins")

	output, err := cmd.Output(testexec.DumpLogOnError)

	if err != nil {
		s.Fatalf("%s failed: %v", shutil.EscapeSlice(cmd.Args), err)
	}

	if err := ioutil.WriteFile(filepath.Join(s.OutDir(), "fwupdmgr.txt"), output, 0644); err != nil {
		s.Fatal("Failed dumping fwupdmgr output: ", err)
	}

	if err := checkForPowerdStr(output); err != nil {
		s.Fatal("powerd was not compiled: ", err)
	}
}