test: add check.structuralEqual util
test: add check.structuralEqual util

zenmumbler/stardazed-tx,zenmumbler/libzm,stardazed/stardazed,zenmumbler/libzm,stardazed/stardazed,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/libzm,stardazed/stardazed-tx,stardazed/stardazed-tx,zenmumbler/libzm