Instantly kill a sheep with a female citizen.
And:
# Give an entity (1) the value `infinite` in any damage-type.
## Check that the damage-type value in the GUI is the infinite-sign.
# Attack an entity (2) with (1).
## See that it is instant-kill.
# Give (2) the value `infinite` in armour for the same damage-type as (1) has.
## Check that the armour-value for that damage type in the GUI is the infinite-sign and 100%.
# Attack (2) with (1).
## See that it is not instant-kill anymore (just the damage of the other damage-types).
# Upgrade attack of (1) and armour of (2).
# Perform same checks as above.