nim-libp2p/tests/errorhelpers.nim

30 lines
1.0 KiB
Nim

import
std/sequtils,
chronos
proc allFuturesThrowing*(args: varargs[FutureBase]): Future[void] =
# This proc is only meant for use in tests / not suitable for general use.
# - Swallowing errors arbitrarily instead of aggregating them is bad design
# - It raises `CatchableError` instead of the union of the `futs` errors,
# inflating the caller's `raises` list unnecessarily. `macro` could fix it
let futs = @args
(proc() {.async: (raises: [CatchableError]).} =
await allFutures(futs)
var firstErr: ref CatchableError
for fut in futs:
if fut.failed:
let err = fut.error()
if err of CancelledError:
raise err
if firstErr == nil:
firstErr = err
if firstErr != nil:
raise firstErr)()
proc allFuturesThrowing*[T](futs: varargs[Future[T]]): Future[void] =
allFuturesThrowing(futs.mapIt(FutureBase(it)))
proc allFuturesThrowing*[T, E](
futs: varargs[InternalRaisesFuture[T, E]]): Future[void] =
allFuturesThrowing(futs.mapIt(FutureBase(it)))