Development tests

Send GPS to sleep, measure supply current dropped significantly, wake it up, make sure NMEA data are coming
Send all devices to sleep/suspend, measure the current is in range of uA
Make sure the GPS is able to get fix in the first fix scenario
Make sure the GPS gets fix within 10 seconds if had fix before and was sleeping for 30 minutes afterwards

Prod tests

Connect battery, the device should initialize, measure all required data and send it over LoRa to cloud
Make sure the current drops to uA range
Make sure the device wakes up after 30 minutes and sends data again
Make sure the device times out waiting for GPS if no GPS signal is available
Put device in freezer for a week, make sure it continues to operate for the whole time