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# Test MicroPython extensions on CPython asyncio:

# - sleep_ms

# - wait_for_ms

try:

import time, asyncio

except ImportError:

print("SKIP")

raise SystemExit

async def task(id, t):

print("task start", id)

await asyncio.sleep_ms(t)

print("task end", id)

return id * 2

async def main():

# Simple sleep_ms

t0 = time.ticks_ms()

await asyncio.sleep_ms(1)

print(time.ticks_diff(time.ticks_ms(), t0) < 100)

try:

# Sleep 1ms beyond maximum allowed sleep value

await asyncio.sleep_ms(time.ticks_add(0, -1) // 2 + 1)

except OverflowError:

print("OverflowError")

# When task finished before the timeout

print(await asyncio.wait_for_ms(task(1, 5), 50))

# When timeout passes and task is cancelled

try:

print(await asyncio.wait_for_ms(task(2, 50), 5))

except asyncio.TimeoutError:

print("timeout")

print("finish")

asyncio.run(main())