var common = require('../common'); var assert = require('assert'); var exec = require('child_process').exec; var join = require('path').join; var nodePath = process.argv[0]; var script = join(common.fixturesDir, 'print-10-lines.js'); var cmd = '"' + nodePath + '" "' + script + '" | head -2'; var finished = false; exec(cmd, function(err, stdout, stderr) { if (err) throw err; var lines = stdout.split('\n'); assert.equal(3, lines.length); finished = true; }); process.addListener('exit', function() { assert.ok(finished); });