Generate appropriate input for testing run-length encoding

gistfile1.lua

-- Generate a random array of bytes, with some redundancy (via sorting).
function gen_int_array(limit)
    limit = limit or 10000
    local ri = lunatest.random_int
    local length = ri(1, limit)
    local ints = {}
    for i=1,length do
        -- keep them small, to increase duplication
        ints[i] = ri(0, 2^8 - 1)
    end
    -- group repeated values together
    table.sort(ints)
    return ints
end