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-- This is a manual test because uv.loop_configure would affect all other tests that
-- run after it. So, just to be safe, this is not included in the automatic test runner.
return require('lib/tap')(function (test)
-- port of https://github.com/libuv/libuv/blob/fa8b4f27c023638918e645ef997c3b56a3a5e681/test/test-metrics.c#L39-L63
test("idle time", function (print, p, expect, uv)
local NS_TO_MS = 1000000
local timeout = 1000
uv.loop_configure('metrics_idle_time')
local timer = uv.new_timer()
local counter = 0
timer:start(timeout, 0, function()
counter = counter + 1
local t = uv.hrtime()
-- Spin for 500 ms to spin loop time out of the delta check.
while uv.hrtime() - t < 600 * NS_TO_MS do end
timer:close()
local idle_time = uv.metrics_idle_time()
assert(idle_time <= (timeout + 500) * NS_TO_MS, "idle_time larger than expected: "..idle_time)
assert(idle_time >= (timeout - 500) * NS_TO_MS, "idle_time smaller than expected: "..idle_time)
end)
end)
end)
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