import daff

data1 = [
    ['Country','Capital'],
    ['Ireland','Dublin'],
    ['France','Paris'],
    ['Spain','Barcelona']
]

data2 = [
    ['Country','Code','Capital'],
    ['Ireland','ie','Dublin'],
    ['France','fr','Paris'],
    ['Spain','es','Madrid'],
    ['Germany','de','Berlin']
]

table_diff = daff.diff(data1,data2)
assert(table_diff.height==6)
assert(table_diff.width==4)