How to run all android instrumentation tests on multiple devices parallelly

Question

I'm trying to run all my espresso tests on multiple devices simultaneously using adb shell am instrument command. Wondering if there is a way. I'm not trying to distribute my tests across devices, i want to run all of them on all connected devices.

I tried to use gradle command but i'm not able to change the runner (Allure).

Answer 1

Simply run the processes in the background

serialnos=( "serialno1" "serialno2" "serialno3" )
for s in ${serialnos[@]}; do
  adb -s "$s" shell am instrument ... &
done