test(core): add test for event constants
test(core): add test for event constants

kgislsompo/valdr,netceteragroup/valdr,PesanskiGoran/valdr,SoftwareCraftsmen/valdr,NFC-DITO/valdr,kgislsompo/valdr,SoftwareCraftsmen/valdr,NFC-DITO/valdr,PesanskiGoran/valdr