local func = function(p, uv)

local before = os.time()

local async

async = uv.new_async(function(a, b, c)

p('in async notify callback')

p(a, b, c)

uv.close(async)

end)

local args = {500, 'string', nil, false, 5, "helloworld", async}

local unpack = unpack or table.unpack

uv.new_thread(function(num, s, null, bool, five, hw, asy)

local uv2 = require 'luv'

uv2.async_send(asy, 'a', true, 250)

uv2.sleep(1000)

end, unpack(args)):join()

local elapsed = (os.time() - before) * 1000

assert(elapsed >= 1000, "elapsed should be at least delay ")

end

local uv = vim.uv or vim.loop

func(print, uv)