node/test/parallel/test-process-kill-null.js

// Copyright Joyent, Inc. and other Node contributors.
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'use strict';
const common = require('../common');
const assert = require('assert');
const spawn = require('child_process').spawn;

const child = common.isWindows ? spawn('cmd.exe') : spawn('cat');

assert.ok(process.kill(child.pid, 0));

child.on('exit', common.mustCall(function() {
  assert.throws(function() {
    process.kill(child.pid, 0);
  }, Error);
}));

child.stdout.on('data', common.mustCall(function() {
  process.kill(child.pid, 'SIGKILL');
}));

// EPIPE when null sig fails
child.stdin.write('test');