failing test: parallel/test-vm-debug-context

[brendanashworth]

I just got this failed test on my local machine (MBP, ~2013), and I've seen it before multiple times on the CI. This is one that killed an Ubuntu 14.04 run.

=== release test-vm-debug-context ===                                          
Path: parallel/test-vm-debug-context
assert.js:88
  throw new assert.AssertionError({
        ^
AssertionError: false == true
    at ChildProcess.<anonymous> (io.js/test/parallel/test-vm-debug-context.js:65:3)
    at ChildProcess.<anonymous> (io.js/test/common.js:311:15)
    at ChildProcess.g (events.js:257:16)
    at emitTwo (events.js:87:13)
    at ChildProcess.emit (events.js:169:7)
    at Process.ChildProcess._handle.onexit (child_process.js:1044:12)

[bnoordhuis]

Can you apply this diff and post the output?

diff --git a/test/parallel/test-vm-debug-context.js b/test/parallel/test-vm-debug-context.js
index da2a447..8d0dedf 100644
--- a/test/parallel/test-vm-debug-context.js
+++ b/test/parallel/test-vm-debug-context.js
@@ -56,6 +56,8 @@ assert.strictEqual(vm.runInDebugContext(undefined), undefined);
 var script = common.fixturesDir + '/vm-run-in-debug-context.js';
 var proc = spawn(process.execPath, [script]);
 var data = [];
+proc.stdout.pipe(process.stdout);
+proc.stderr.pipe(process.stderr);
 proc.stdout.on('data', assert.fail);
 proc.stderr.on('data', data.push.bind(data));
 proc.once('exit', common.mustCall(function(exitCode, signalCode) {

[brendanashworth]

@bnoordhuis, at HEAD:

$ iojs -v
v1.6.3
$ iojs test/parallel/test-vm-debug-context
undefined:1
*
^
SyntaxError: Unexpected token *
$ iojs test/parallel/test-vm-debug-context

assert.js:88
  throw new assert.AssertionError({
        ^
AssertionError: false == true
    at ChildProcess.<anonymous> (/Users/brendanashworth/Programming/JavaScript/io.js/test/parallel/test-vm-debug-context.js:67:3)
    at ChildProcess.<anonymous> (/Users/brendanashworth/Programming/JavaScript/io.js/test/common.js:311:15)
    at ChildProcess.g (events.js:257:16)
    at emitTwo (events.js:87:13)
    at ChildProcess.emit (events.js:169:7)
    at Process.ChildProcess._handle.onexit (child_process.js:1044:12)

The first run succeeds, the second doesn't.

It is failling about 1.5 in twenty times, so it isn't that bad, but it is affecting the CI.

[bnoordhuis]

EDIT: Never mind, looks like my build was out of date. Retested and can reproduce but only very infrequently.

[bnoordhuis]

Fixed by 8d1c87e.

[brendanashworth]

It looks to me as if this just popped up again, failing this Ubuntu 12.04 run... @bnoordhuis ?

[bnoordhuis]

@brendanashworth That run was for a PR that predates the fix.