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|
discard """
exitcode: 0
output: "Matched"
"""
import asyncdispatch, strutils
# Tests to ensure our exception trace backs are friendly.
# --- Simple test. ---
#
# What does this look like when it's synchronous?
#
# tasync_traceback.nim(23) tasync_traceback
# tasync_traceback.nim(21) a
# tasync_traceback.nim(18) b
# Error: unhandled exception: b failure [OSError]
#
# Good (not quite ideal, but gotta work within constraints) traceback,
# when exception is unhandled:
#
# <traceback for the unhandled exception>
# <very much a bunch of noise>
# <would be ideal to customise this>
# <(the code responsible is in excpt:raiseExceptionAux)>
# Error: unhandled exception: b failure
# ===============
# Async traceback
# ===============
#
# tasync_traceback.nim(23) tasync_traceback
#
# tasync_traceback.nim(21) a
# tasync_traceback.nim(18) b
var result = ""
proc b(): Future[int] {.async.} =
if true:
raise newException(OSError, "b failure")
proc a(): Future[int] {.async.} =
return await b()
let aFut = a()
try:
discard waitFor aFut
except Exception as exc:
result.add(exc.msg & "\n")
result.add("\n")
# From #6803
proc bar(): Future[string] {.async.} =
await sleepAsync(100)
if true:
raise newException(OSError, "bar failure")
proc foo(): Future[string] {.async.} = return await bar()
try:
result.add(waitFor(foo()) & "\n")
except Exception as exc:
result.add(exc.msg & "\n")
result.add("\n")
# Use re to parse the result
import re
const expected = """
b failure
Async traceback:
tasync_traceback\.nim\(\d+?\) tasync_traceback
tasync_traceback\.nim\(\d+?\) a \(Async\)
tasync_traceback\.nim\(\d+?\) b \(Async\)
Exception message: b failure
bar failure
Async traceback:
tasync_traceback\.nim\(\d+?\) tasync_traceback
asyncdispatch\.nim\(\d+?\) waitFor
asyncdispatch\.nim\(\d+?\) poll
## Processes asynchronous completion events
asyncdispatch\.nim\(\d+?\) runOnce
asyncdispatch\.nim\(\d+?\) processPendingCallbacks
## Executes pending callbacks
tasync_traceback\.nim\(\d+?\) bar \(Async\)
Exception message: bar failure
"""
# TODO: is asyncmacro good enough location for fooIter traceback/debugging? just put the callsite info for all?
let resLines = splitLines(result.strip)
let expLines = splitLines(expected.strip)
when not defined(cpp): # todo fixme
if resLines.len != expLines.len:
echo("Not matched! Wrong number of lines!")
echo expLines.len
echo resLines.len
echo("Expected: -----------")
echo expected
echo("Gotten: -------------")
echo result
echo("---------------------")
quit(QuitFailure)
var ok = true
for i in 0 ..< resLines.len:
if not resLines[i].match(re(expLines[i])):
echo "Not matched! Line ", i + 1
echo "Expected:"
echo expLines[i]
echo "Actual:"
echo resLines[i]
ok = false
if ok:
echo("Matched")
else:
quit(QuitFailure)
else:
echo("Matched")
|