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v/vlib/os/process_test.v

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import os
import time
const vexe = os.getenv('VEXE')
const vroot = os.dir(vexe)
const test_os_process = os.join_path(os.temp_dir(), 'v', 'test_os_process.exe')
const test_os_process_source = os.join_path(vroot, 'cmd/tools/test_os_process.v')
fn testsuite_begin() {
os.rm(test_os_process) or {}
assert os.system('$vexe -o $test_os_process $test_os_process_source') == 0
}
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fn test_getpid() {
pid := os.getpid()
eprintln('current pid: $pid')
assert pid != 0
}
fn test_run() {
if os.user_os() == 'windows' {
return
}
//
mut p := os.new_process(test_os_process)
p.set_args(['-timeout_ms', '150', '-period_ms', '50'])
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p.run()
assert p.status == .running
assert p.pid > 0
assert p.pid != os.getpid()
mut i := 0
for {
if !p.is_alive() {
break
}
$if trace_process_output ? {
os.system('ps -opid= -oppid= -ouser= -onice= -of= -ovsz= -orss= -otime= -oargs= -p $p.pid')
}
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time.sleep(50 * time.millisecond)
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i++
}
p.wait()
assert p.code == 0
assert p.status == .exited
//
eprintln('polling iterations: $i')
assert i < 20
}
fn test_wait() {
if os.user_os() == 'windows' {
return
}
mut p := os.new_process(test_os_process)
assert p.status != .exited
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p.wait()
assert p.status == .exited
assert p.code == 0
assert p.pid != os.getpid()
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}
fn test_slurping_output() {
if os.user_os() == 'windows' {
return
}
mut p := os.new_process(test_os_process)
p.set_args(['-timeout_ms', '500', '-period_ms', '50'])
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p.set_redirect_stdio()
assert p.status != .exited
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p.wait()
assert p.status == .exited
assert p.code == 0
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output := p.stdout_slurp().trim_space()
errors := p.stderr_slurp().trim_space()
$if trace_process_output ? {
eprintln('---------------------------')
eprintln('p output: "$output"')
eprintln('p errors: "$errors"')
eprintln('---------------------------')
}
assert output.contains('stdout, 1')
assert output.contains('stdout, 2')
assert output.contains('stdout, 3')
assert output.contains('stdout, 4')
assert errors.contains('stderr, 1')
assert errors.contains('stderr, 2')
assert errors.contains('stderr, 3')
assert errors.contains('stderr, 4')
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}