require "logging.rolling_file"

local max_size       = 1024 * 10 --10kb
local max_index      = 5
local total_log_size = max_size * max_index --more than needed because of the log pattern
local log_filename   = "test.log"
local logger         = logging.rolling_file(log_filename, max_size, max_index)


-- it will generate the log + max_index backup files
local size = 0
while size < total_log_size  do 
    local data = string.format("Test actual size[%d]", size)
    logger:debug(data)
    size = size + string.len(data)
end

-- lets test if all files where created
for i = 1, max_index do
    local file = assert(io.open(log_filename.."."..i, "r"))
    -- since there is an exact precision on the rolling 
    -- (it can be a little less or a little more than the max_size)
    -- lets just test if the file is empty.

    assert(file:seek("end", 0) > 0)
    file:close()
end

print("done")