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# test the osproc module
import stdtest/specialpaths
import "../.." / compiler/unittest_light
when defined(case_testfile): # compiled test file for child process
from posix import exitnow
proc c_exit2(code: c_int): void {.importc: "_exit", header: "<unistd.h>".}
import os
var a = 0
proc fun(b = 0) =
a.inc
if a mod 10000000 == 0: # prevents optimizing it away
echo a
fun(b+1)
proc main() =
let args = commandLineParams()
echo (msg: "child binary", pid: getCurrentProcessId())
let arg = args[0]
echo (arg: arg)
case arg
of "exit_0":
if true: quit(0)
of "exitnow_139":
if true: exitnow(139)
of "c_exit2_139":
if true: c_exit2(139)
of "quit_139":
# `exitStatusLikeShell` doesn't distinguish between a process that
# exit(139) and a process that gets killed with `SIGSEGV` because
# 139 = 11 + 128 = SIGSEGV + 128.
# However, as #10249 shows, this leads to bad debugging experience
# when a child process dies with SIGSEGV, leaving no trace of why it
# failed. The shell (and lldb debugger) solves that by inserting a
# helpful msg: `segmentation fault` when it detects a signal killed
# the child.
# todo: expose an API that will show more diagnostic, returing
# (exitCode, signal) instead of just `shellExitCode`.
if true: quit(139)
of "exit_recursion": # stack overflow by infinite recursion
fun()
echo a
of "exit_array": # bad array access
echo args[1]
main()
else:
import os, osproc, strutils, posix
block execShellCmdTest:
## first, compile child program
const nim = getCurrentCompilerExe()
const sourcePath = currentSourcePath()
let output = buildDir / "D20190111T024543".addFileExt(ExeExt)
let cmd = "$# c -o:$# -d:release -d:case_testfile $#" % [nim, output,
sourcePath]
# we're testing `execShellCmd` so don't rely on it to compile test file
# note: this should be exported in posix.nim
proc c_system(cmd: cstring): cint {.importc: "system",
header: "<stdlib.h>".}
assertEquals c_system(cmd), 0
## use it
template runTest(arg: string, expected: int) =
echo (arg2: arg, expected2: expected)
assertEquals execShellCmd(output & " " & arg), expected
runTest("exit_0", 0)
runTest("exitnow_139", 139)
runTest("c_exit2_139", 139)
runTest("quit_139", 139)
runTest("exit_array", 1)
when defined(posix): # on windows, -1073741571
runTest("exit_recursion", SIGSEGV.int + 128) # bug #10273: was returning 0
assertEquals exitStatusLikeShell(SIGSEGV), SIGSEGV + 128.cint
block execProcessTest:
let dir = parentDir(currentSourcePath())
let (outp, err) = execCmdEx("nim c " & quoteShell(dir / "osproctest.nim"))
doAssert err == 0
let exePath = dir / addFileExt("osproctest", ExeExt)
let outStr1 = execProcess(exePath, workingDir = dir, args = ["foo",
"b A r"], options = {})
doAssert outStr1 == dir & "\nfoo\nb A r\n"
const testDir = "t e st"
createDir(testDir)
doAssert dirExists(testDir)
let outStr2 = execProcess(exePath, workingDir = testDir, args = ["x yz"],
options = {})
doAssert outStr2 == absolutePath(testDir) & "\nx yz\n"
removeDir(testDir)
try:
removeFile(exePath)
except OSError:
discard
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