node/test/parallel/test-sigint-infinite-loop.js

'use strict';
// This test is to assert that we can SIGINT a script which loops forever.
// Ref(http):
// groups.google.com/group/nodejs-dev/browse_thread/thread/e20f2f8df0296d3f
const common = require('../common');
const assert = require('assert');
const spawn = require('child_process').spawn;

console.log('start');

var c = spawn(process.execPath, ['-e', 'while(true) { console.log("hi"); }']);

var sentKill = false;

c.stdout.on('data', function(s) {
  // Prevent race condition:
  // Wait for the first bit of output from the child process
  // so that we're sure that it's in the V8 event loop and not
  // just in the startup phase of execution.
  if (!sentKill) {
    c.kill('SIGINT');
    console.log('SIGINT infinite-loop.js');
    sentKill = true;
  }
});

c.on('exit', common.mustCall(function(code) {
  assert.ok(code !== 0);
  console.log('killed infinite-loop.js');
}));

process.on('exit', function() {
  assert.ok(sentKill);
});