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// Copyright 2015 The Go 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 app_test
import (
"fmt"
"image"
"image/color"
_ "image/png"
"io/ioutil"
"net"
"os"
"os/exec"
"strings"
"testing"
"time"
"golang.org/x/mobile/app/internal/apptest"
"golang.org/x/mobile/event/size"
)
// TestAndroidApp tests the lifecycle, event, and window semantics of a
// simple android app.
//
// Beyond testing the app package, the goal is to eventually have
// helper libraries that make tests like these easy to write. Hopefully
// having a user of such a fictional package will help illuminate the way.
func TestAndroidApp(t *testing.T) {
if _, err := exec.Command("which", "adb").CombinedOutput(); err != nil {
t.Skip("command adb not found, skipping")
}
devicesTxt, err := exec.Command("adb", "devices").CombinedOutput()
if err != nil {
t.Errorf("adb devices failed: %v: %v", err, devicesTxt)
}
deviceCount := 0
for _, d := range strings.Split(strings.TrimSpace(string(devicesTxt)), "\n") {
if strings.Contains(d, "List of devices") {
continue
}
// TODO(crawshaw): I believe some unusable devices can appear in the
// list with note on them, but I cannot reproduce this right now.
deviceCount++
}
if deviceCount == 0 {
t.Skip("no android devices attached")
}
run(t, "gomobile", "version")
origWD, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
tmpdir, err := ioutil.TempDir("", "app-test-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpdir)
if err := os.Chdir(tmpdir); err != nil {
t.Fatal(err)
}
defer os.Chdir(origWD)
run(t, "gomobile", "install", "golang.org/x/mobile/app/internal/testapp")
ln, err := net.Listen("tcp4", "localhost:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
localaddr := fmt.Sprintf("tcp:%d", ln.Addr().(*net.TCPAddr).Port)
t.Logf("local address: %s", localaddr)
exec.Command("adb", "reverse", "--remove", "tcp:"+apptest.Port).Run() // ignore failure
run(t, "adb", "reverse", "tcp:"+apptest.Port, localaddr)
const (
KeycodePower = "26"
KeycodeUnlock = "82"
)
run(t, "adb", "shell", "input", "keyevent", KeycodePower)
run(t, "adb", "shell", "input", "keyevent", KeycodeUnlock)
const (
rotationPortrait = "0"
rotationLandscape = "1"
)
rotate := func(rotation string) {
run(t, "adb", "shell", "content", "insert", "--uri", "content://settings/system", "--bind", "name:s:user_rotation", "--bind", "value:i:"+rotation)
}
// turn off automatic rotation and start in portrait
run(t, "adb", "shell", "content", "insert", "--uri", "content://settings/system", "--bind", "name:s:accelerometer_rotation", "--bind", "value:i:0")
rotate(rotationPortrait)
// start testapp
run(t,
"adb", "shell", "am", "start", "-n",
"org.golang.testapp/org.golang.app.GoNativeActivity",
)
var conn net.Conn
connDone := make(chan struct{})
go func() {
conn, err = ln.Accept()
connDone <- struct{}{}
}()
select {
case <-time.After(5 * time.Second):
t.Fatal("timeout waiting for testapp to dial host")
case <-connDone:
if err != nil {
t.Fatalf("ln.Accept: %v", err)
}
}
defer conn.Close()
comm := &apptest.Comm{
Conn: conn,
Fatalf: t.Fatalf,
Printf: t.Logf,
}
var pixelsPerPt float32
var orientation size.Orientation
comm.Recv("hello_from_testapp")
comm.Send("hello_from_host")
comm.Recv("lifecycle_visible")
comm.Recv("size", &pixelsPerPt, &orientation)
if pixelsPerPt < 0.1 {
t.Fatalf("bad pixelsPerPt: %f", pixelsPerPt)
}
// A single paint event is sent when the lifecycle enters
// StageVisible, and after the end of a touch event.
var color string
comm.Recv("paint", &color)
// Ignore the first paint color, it may be slow making it to the screen.
rotate(rotationLandscape)
comm.Recv("size", &pixelsPerPt, &orientation)
if want := size.OrientationLandscape; orientation != want {
t.Errorf("want orientation %d, got %d", want, orientation)
}
var x, y int
var ty string
tap(t, 50, 260)
comm.Recv("touch", &ty, &x, &y)
if ty != "begin" || x != 50 || y != 260 {
t.Errorf("want touch begin(50, 260), got %s(%d,%d)", ty, x, y)
}
comm.Recv("touch", &ty, &x, &y)
if ty != "end" || x != 50 || y != 260 {
t.Errorf("want touch end(50, 260), got %s(%d,%d)", ty, x, y)
}
comm.Recv("paint", &color)
if gotColor := currentColor(t); color != gotColor {
t.Errorf("app reports color %q, but saw %q", color, gotColor)
}
rotate(rotationPortrait)
comm.Recv("size", &pixelsPerPt, &orientation)
if want := size.OrientationPortrait; orientation != want {
t.Errorf("want orientation %d, got %d", want, orientation)
}
tap(t, 50, 260)
comm.Recv("touch", &ty, &x, &y) // touch begin
comm.Recv("touch", &ty, &x, &y) // touch end
comm.Recv("paint", &color)
if gotColor := currentColor(t); color != gotColor {
t.Errorf("app reports color %q, but saw %q", color, gotColor)
}
// TODO: lifecycle testing (NOTE: adb shell input keyevent 4 is the back button)
}
func currentColor(t *testing.T) string {
file := fmt.Sprintf("app-screen-%d.png", time.Now().Unix())
run(t, "adb", "shell", "screencap", "-p", "/data/local/tmp/"+file)
run(t, "adb", "pull", "/data/local/tmp/"+file)
run(t, "adb", "shell", "rm", "/data/local/tmp/"+file)
defer os.Remove(file)
f, err := os.Open(file)
if err != nil {
t.Errorf("currentColor: cannot open screencap: %v", err)
return ""
}
m, _, err := image.Decode(f)
if err != nil {
t.Errorf("currentColor: cannot decode screencap: %v", err)
return ""
}
var center color.Color
{
b := m.Bounds()
x, y := b.Min.X+(b.Max.X-b.Min.X)/2, b.Min.Y+(b.Max.Y-b.Min.Y)/2
center = m.At(x, y)
}
r, g, b, _ := center.RGBA()
switch {
case r == 0xffff && g == 0x0000 && b == 0x0000:
return "red"
case r == 0x0000 && g == 0xffff && b == 0x0000:
return "green"
case r == 0x0000 && g == 0x0000 && b == 0xffff:
return "blue"
default:
return fmt.Sprintf("indeterminate: %v", center)
}
}
func tap(t *testing.T, x, y int) {
run(t, "adb", "shell", "input", "tap", fmt.Sprintf("%d", x), fmt.Sprintf("%d", y))
}
func run(t *testing.T, cmdName string, arg ...string) {
cmd := exec.Command(cmdName, arg...)
t.Log(strings.Join(cmd.Args, " "))
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("%s %v: %s", strings.Join(cmd.Args, " "), err, out)
}
}