shell-mirror/mac-agent/node_modules/@koush/wrtc/scripts/karma.js

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#!/usr/bin/env node
/* eslint no-console:0, no-process-env:0, no-process-exit:0 */
'use strict';

var fork = require('child_process').fork;
var spawn = require('child_process').spawn;
var join = require('path').join;

console.log('Starting server');
var server = fork(join(__dirname, '..', 'karma', 'server.js'));
console.log('Server PID is ' + server.pid);

server.once('error', function(error) {
  console.error('Failed to start server: ' + error.stack);
  exit(error.code);
});

server.once('exit', function(code) {
  if (code) {
    console.error('Server closed in error');
    exit(code);
  }
});

var configFile = join(__dirname, '..', 'karma', 'karma.conf.js');

console.log('Starting Karma');
var karma = spawn(join(__dirname, '..', 'node_modules', '.bin', 'karma'), ['start', configFile], {
  env: Object.assign({
    FILE: join(__dirname, '..', 'karma', 'client.js'),
  }, process.env),
  shell: true,
  stdio: 'inherit'
});
console.log('Karma PID is ' + karma.pid);

karma.once('error', function(error) {
  console.error('Failed to start Karma: ' + error.stack);
  exit(1);
});

karma.once('exit', function(code) {
  if (code) {
    console.error('Karma closed in error');
    exit(code);
  } else {
    console.log('Karma succeeded');
    exit(0);
  }
});

process.once('exit', exit);
process.once('SIGINT', exit);
process.once('SIGUSR1', exit);
process.once('SIGUSR2', exit);
process.once('uncaughtException', exit);

function exit(code) {
  if (server) {
    server.kill();
    server = null;
  }

  if (karma) {
    karma.kill();
    karma = null;
  }

  process.exit(code);
}