nim-chronos/tests/testfut.nim

149 lines
3.3 KiB
Nim

# Asyncdispatch2 Test Suite
# (c) Copyright 2018
# Status Research & Development GmbH
#
# Licensed under either of
# Apache License, version 2.0, (LICENSE-APACHEv2)
# MIT license (LICENSE-MIT)
import unittest
import ../asyncdispatch2
proc testFuture1(): Future[int] {.async.} =
await sleepAsync(100)
proc testFuture2(): Future[int] {.async.} =
return 1
proc testFuture3(): Future[int] {.async.} =
result = await testFuture2()
proc testFuture4(): Future[int] {.async.} =
## Test for not immediately completed future and timeout = -1
result = 0
try:
var res = await wait(testFuture1(), -1)
result = 1
except:
result = 0
if result == 0:
return -1
## Test for immediately completed future and timeout = -1
result = 0
try:
var res = await wait(testFuture2(), -1)
result = 2
except:
result = 0
if result == 0:
return -2
## Test for not immediately completed future and timeout = 0
result = 0
try:
var res = await wait(testFuture1(), 0)
except AsyncTimeoutError:
result = 3
if result == 0:
return -3
## Test for immediately completed future and timeout = 0
result = 0
try:
var res = await wait(testFuture2(), 0)
result = 4
except:
result = 0
if result == 0:
return -4
## Test for future which cannot be completed in timeout period
result = 0
try:
var res = await wait(testFuture1(), 50)
except AsyncTimeoutError:
result = 5
if result == 0:
return -5
## Test for future which will be completed before timeout exceeded.
try:
var res = await wait(testFuture1(), 300)
result = 6
except:
result = -6
proc test1(): bool =
var fut = testFuture1()
poll()
poll()
result = fut.finished
proc test2(): bool =
var fut = testFuture3()
result = fut.finished
proc test3(): string =
var testResult = ""
var fut = testFuture1()
fut.addCallback proc(udata: pointer) =
testResult &= "1"
fut.addCallback proc(udata: pointer) =
testResult &= "2"
fut.addCallback proc(udata: pointer) =
testResult &= "3"
fut.addCallback proc(udata: pointer) =
testResult &= "4"
fut.addCallback proc(udata: pointer) =
testResult &= "5"
discard waitFor(fut)
poll()
if fut.finished:
result = testResult
proc test4(): string =
var testResult = ""
var fut = testFuture1()
proc cb1(udata: pointer) =
testResult &= "1"
proc cb2(udata: pointer) =
testResult &= "2"
proc cb3(udata: pointer) =
testResult &= "3"
proc cb4(udata: pointer) =
testResult &= "4"
proc cb5(udata: pointer) =
testResult &= "5"
fut.addCallback cb1
fut.addCallback cb2
fut.addCallback cb3
fut.addCallback cb4
fut.addCallback cb5
fut.removeCallback cb3
discard waitFor(fut)
poll()
if fut.finished:
result = testResult
proc test5(): int =
result = waitFor(testFuture4())
when isMainModule:
suite "Future[T] behavior test suite":
test "Async undefined behavior (#7758) test":
check test1() == true
test "Immediately completed asynchronous procedure test":
check test2() == true
test "Future[T] callbacks are invoked in reverse order (#7197) test":
check test3() == "12345"
test "Future[T] callbacks not changing order after removeCallback()":
check test4() == "1245"
test "wait[T]() test":
check test5() == 6