Play store

https://play.google.com/store/apps/details?id=net.chmielowski.randomchoice

Taking screenshots

1. Disable animations:

adb shell settings put global window_animation_scale 0
adb shell settings put global animator_duration_scale 0
adb shell settings put global transition_animation_scale 0
adb shell "su 0 am start -a android.intent.action.REBOOT"

2. Disable keyboard: (Depending on system version, not all these commands will succeed).

# Show all keyboards (-a for all, -s for short summary).
adb shell ime list -s -a

# Disable some known keyboards
adb shell ime disable com.google.android.inputmethod.latin
adb shell ime disable com.android.inputmethod.latin
adb shell ime disable com.android.inputmethod.latin/.LatinIME
adb shell ime disable com.google.android.googlequicksearchbox
adb shell ime disable com.google.android.apps.inputmethod.hindi/.HindiInputMethodService
adb shell ime disable com.google.android.inputmethod.pinyin/.PinyinIME
adb shell ime disable jp.co.omronsoft.openwnn/.OpenWnnJAJP

# Some Stack Overflow answers suggest using the following command.
# Not sure why, but probably worth checking if `adb shell ime disable` is not working on some OS versions.
# adb shell pm disable-user com.google.android.inputmethod.latin

3. Run tests: Use Android Studio and run tests in ScreenshotTest.kt file.

4. Download screenshots from the device:

adb root
adb pull /data/data/net.chmielowski.randomchoice/files/ screenshots