Files
Nim/tests/async/t8982.nim
Miran 964b5dac7c complete future only once in or (fixes #8982) (#9632)
* complete future only once in `or`

Analogous to `and`.
Credits to @k0zmo for proposing the solution.

* add test
2018-11-09 22:45:17 +00:00

34 lines
656 B
Nim

discard """
output: '''
timeout
runForever should throw ValueError, this is expected
'''
"""
import asyncdispatch
proc failingAwaitable(p: int) {.async.} =
await sleepAsync(500)
if p > 0:
raise newException(Exception, "my exception")
proc main() {.async.} =
let fut = failingAwaitable(1)
try:
await fut or sleepAsync(100)
if fut.finished:
echo "finished"
else:
echo "timeout"
except:
echo "failed"
# Previously this would raise "An attempt was made to complete a Future more than once."
try:
asyncCheck main()
runForever()
except ValueError:
echo "runForever should throw ValueError, this is expected"