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spawn-mocha-parallel

v1.3.1

Published

Spawn mocha child processes in parallel.

Downloads

2,893

Readme

spawn-mocha-parallel

This let you run your test in parallel by spawning several child processes. It was designed to be used with gulp, but since it relies only on npm, it may be used within various configuration.

NPM version Downloads Dependency Status devDependency Status

Credits

This was originaly a fork of [gulp-spawn-mocha] but has deviated a lot since then.

Usage

Using built in mochaStream:

var mochaStream = require('spawn-mocha-parallel').mochaStream;

var mocha = mochaStream({concurrency: 10});

gulp.task('test-mocha', function() {
  gulp.src('**/*-specs.js', {read: false}) 
    .pipe(mocha)
    .on('error', console.error)
});

Using SpawnMocha

var SpawnMocha = require('spawn-mocha-parallel').SpawnMocha,
    _ = require('lodash');
    through = require('through');

// customize output as you need
function mochaStream(opts) {
  opts = opts || {};
  var spawnMocha = new SpawnMocha(opts);
  var stream = through(function write(file) {
    spawnMocha.add(file.path);
  }, function() {});
  var errors = [];
  spawnMocha.on('error', function(err) {
    console.error(err.toString());
    errors.push(err);
  }).on('end', function() {
    if(errors.length > 0) {
      console.error('ERROR SUMMARY: ');
      _(errors).each(function(err) {
        console.error(err);
        console.error(err.stack);
      });
      stream.emit('error', "Some tests failed.");
    }
    stream.emit('end');
  });
  return stream;
}

var mocha = mochaStream({concurrency: 3});

gulp.task('test-custom-mocha', function() {
  gulp.src('**/*-specs.js', {read: false}) 
    .pipe(mocha)
    .on('error', console.error)
});

Options

  • concurrency: # of mocha instance running in parallel (default: 1)
  • env mocha running env, (default: process.env)
  • flags: mocha flags (default: none)
  • liveOutput: print output direct to console
  • errorSummary: show error summary (default: true)

Todo

  • concatenate mocha status at the end

License

MIT