1 const expect = require('chai').expect;
2 const exec = require('child_process').exec;
4 const reorder = require('../lib/reorder');
5 const flaggedRespawn = require('../');
7 describe('flaggedRespawn', function () {
8 var flags = ['--harmony', '--use_strict', '--stack_size']
10 describe('reorder', function () {
12 it('should re-order args, placing special flags first', function () {
13 var needsRespawn = ['node', 'file.js', '--flag', '--harmony', 'command'];
14 var noRespawnNeeded = ['node', 'bin/flagged-respawn', 'thing'];
15 expect(reorder(flags, needsRespawn))
16 .to.deep.equal(['node', '--harmony', 'file.js', '--flag', 'command']);
17 expect(reorder(flags, noRespawnNeeded))
18 .to.deep.equal(noRespawnNeeded);
21 it('should keep flags values when not placed first', function () {
22 var args = ['node', 'file.js', '--stack_size=2048'];
23 var expected = ['node', '--stack_size=2048', 'file.js'];
24 expect(reorder(flags, args)).to.deep.equal(expected);
27 it('should ignore special flags when they are in the correct position', function () {
28 var args = ['node', '--harmony', 'file.js', '--flag'];
29 expect(reorder(flags, reorder(flags, args))).to.deep.equal(args);
34 describe('execute', function () {
36 it('should throw if no flags are specified', function () {
37 expect(function () { flaggedRespawn.execute(); }).to.throw;
40 it('should throw if no argv is specified', function () {
41 expect(function () { flaggedRespawn.execute(flags); }).to.throw;
44 it('should respawn and pipe stderr/stdout to parent', function (done) {
45 exec('node ./test/bin/respawner.js --harmony', function (err, stdout, stderr) {
46 expect(stdout.replace(/[0-9]/g, '')).to.equal('Special flags found, respawning.\nRespawned to PID: \nRunning!\n');
51 it('should respawn and pass exit code from child to parent', function (done) {
52 exec('node ./test/bin/exit_code.js --harmony', function (err, stdout, stderr) {
53 expect(err.code).to.equal(100);
58 it.skip('should respawn; if child is killed, parent should exit with same signal', function (done) {
59 // TODO: figure out why travis hates this
60 exec('node ./test/bin/signal.js --harmony', function (err, stdout, stderr) {
61 console.log('err', err);
62 console.log('stdout', stdout);
63 console.log('stderr', stderr);
64 expect(err.signal).to.equal('SIGHUP');
69 it('should call back with ready as true when respawn is not needed', function () {
70 var argv = ['node', './test/bin/respawner'];
71 flaggedRespawn(flags, argv, function (ready) {
72 expect(ready).to.be.true;
76 it('should call back with ready as false when respawn is needed', function () {
77 var argv = ['node', './test/bin/respawner', '--harmony'];
78 flaggedRespawn(flags, argv, function (ready) {
79 expect(ready).to.be.false;
83 it('should call back with the child process when ready', function () {
84 var argv = ['node', './test/bin/respawner', '--harmony'];
85 flaggedRespawn(flags, argv, function (ready, child) {
86 expect(child.pid).to.not.equal(process.pid);
90 it('should call back with own process when respawn not needed', function () {
91 var argv = ['node', './test/bin/respawner'];
92 flaggedRespawn(flags, argv, function (ready, child) {
93 expect(child.pid).to.equal(process.pid);