node/test/simple/test-pipe-head.js

25 lines
535 B
JavaScript

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);
});