⌛
diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5]) should return an array.
⌛
["diorite", "andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"] should return ["pink wool"].
⌛
["diorite", "andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"] should return an array with one item.
⌛
["andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"] should return ["diorite", "pink wool"].
⌛
["andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"] should return an array with two items.
⌛
["andesite", "grass", "dirt", "dead shrub"], ["andesite", "grass", "dirt", "dead shrub"] should return [].
⌛
["andesite", "grass", "dirt", "dead shrub"], ["andesite", "grass", "dirt", "dead shrub"] should return an empty array.
⌛
[1, 2, 3, 5], [1, 2, 3, 4, 5] should return [4].
⌛
[1, 2, 3, 5], [1, 2, 3, 4, 5] should return an array with one item.
⌛
[1, "calf", 3, "piglet"], [1, "calf", 3, 4] should return ["piglet", 4].
⌛
[1, "calf", 3, "piglet"], [1, "calf", 3, 4] should return an array with two items.
⌛
[], ["snuffleupagus", "cookie monster", "elmo"] should return ["snuffleupagus", "cookie monster", "elmo"].
⌛
[], ["snuffleupagus", "cookie monster", "elmo"] should return an array with three items.
⌛
[1, "calf", 3, "piglet"], [7, "filly"] should return [1, "calf", 3, "piglet", 7, "filly"].
⌛
[1, "calf", 3, "piglet"], [7, "filly"] should return an array with six items.