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// 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 peripherals
import (
// accelTestParams contains all the data needed to run a single test iteration.
type accelTestParams struct {
app apps.App
keystroke string
featureFlag string
func init() {
Func: LaunchAppFromAccelerator,
Desc: "Peripherals app can be found and launched with an accelerator",
Contacts: []string{
Attr: []string{"group:mainline", "informational"},
SoftwareDeps: []string{"chrome"},
Params: []testing.Param{
Name: "diagnostics",
Val: accelTestParams{
app: apps.Diagnostics,
keystroke: "Ctrl+Search+Esc",
featureFlag: "DiagnosticsApp",
// LaunchAppFromAccelerator verifies launching an app with an accelerator.
func LaunchAppFromAccelerator(ctx context.Context, s *testing.State) {
cleanupCtx := ctx
ctx, cancel := ctxutil.Shorten(ctx, 5*time.Second)
defer cancel()
params := s.Param().(accelTestParams)
cr, err := chrome.New(ctx, chrome.EnableFeatures(params.featureFlag))
if err != nil {
s.Fatal("Failed to start Chrome: ", err)
defer cr.Close(cleanupCtx) // Close our own chrome instance.
tconn, err := cr.TestAPIConn(ctx)
if err != nil {
s.Fatal("Failed to connect Test API: ", err)
defer faillog.DumpUITreeOnError(cleanupCtx, s.OutDir(), s.HasError, tconn)
kb, err := input.Keyboard(ctx)
if err != nil {
s.Fatal("Error creating keyboard instance: ", err)
defer kb.Close()
// Briefly sleep so that the device will be ready to process the input.
// TODO(joonbug): Find a suitable polling target for this instead of sleep.
if err := testing.Sleep(ctx, 10*time.Second); err != nil {
s.Fatal("Error stablizing: ", err)
s.Logf("Sending keystroke: %s", params.keystroke)
err = kb.Accel(ctx, params.keystroke)
if err != nil {
s.Fatal("Failed to search and launch app: ", err)
err = ash.WaitForApp(ctx, tconn,, time.Minute)
if err != nil {
s.Fatal("Could not find app in shelf after launch: ", err)