Shell script to trigger some jank in the Android emulator.

emulator-jank.sh

#!/bin/bash
# Tells an Android emulator to take a snapshot of itself and then
# delete that snapshot immediately. The act of taking a snapshot
# forces the emulator to temporarily pause and trigger unexpected
# system behaviors. When it happens during a test run, it can
# trigger certain hard-to-reproduce flakes.

SNAPSHOT=__TEMPORARY_SNAPSHOT
AUTH="$(cat ~/.emulator_console_auth_token)"
PORT=$1
if [[ -z $PORT ]]; then
	echo "usage: $0 [emulator-port]"
	adb devices
	exit 1
fi

echo "Taking temporary emulator snapshot then deleting it…"
set -e
set -x
nc localhost $1 <<EOF
avd name
auth $AUTH
avd snapshot save $SNAPSHOT
avd snapshot delete $SNAPSHOT
EOF