test.js

describe('programmatic use', function () {
  it('should start', function(done) {
    this.timeout(20000);
    var timedout;
    var selenium = require('./index.js');
    var proc = selenium.start({ stdio: 'pipe' });

    // since selenium 2.43.1, selenium now outputs its info log on stderr
    ['stderr', 'stdout'].forEach(function(output) {
      proc[output].on('data', function seleniumSays(data) {
        var line = data.toString().trim();
        if (line.indexOf('Started SocketListener on 0.0.0.0:4444') > -1) {
          proc.kill();
          clearTimeout(timedout);
          done();
        }
      })
    });

    timedout = setTimeout(function() {
      proc.kill();
      done(new Error('Server never started'));
    }, 20000);
  })
});