Mocha: write EINVAL "Unhandled 'error' event" on Windows 10 with Node 7.1.0

Created on 9 Nov 2016 · 8Comments · Source: mochajs/mocha

Hello all,

New to mocha here. I have npm install mocha --save-dev. I have a folder named test with an empty file messages.js. If I run mocha, I get the following error:

Mocha 3.1.2

events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: write EINVAL
    at exports._errnoException (util.js:1022:11)
    at WriteStream.Socket._writeGeneric (net.js:715:26)
    at WriteStream.Socket._write (net.js:734:8)
    at doWrite (_stream_writable.js:334:12)
    at writeOrBuffer (_stream_writable.js:320:5)
    at WriteStream.Writable.write (_stream_writable.js:247:11)
    at WriteStream.Socket.write (net.js:661:40)
    at c:\leoboto\node_modules\mocha\bin\_mocha:483:12
    at Array.forEach (native)
    at exit (c:\leoboto\node_modules\mocha\bin\_mocha:480:11)
    at done (c:\leoboto\node_modules\mocha\lib\mocha.js:517:13)
    at Runner.<anonymous> (c:\leoboto\node_modules\mocha\lib\runner.js:826:5)
    at emitNone (events.js:91:20)
    at Runner.emit (events.js:185:7)
    at c:\leoboto\node_modules\mocha\lib\runner.js:813:12
    at Runner.runSuite (c:\leoboto\node_modules\mocha\lib\runner.js:606:12)
    at start (c:\leoboto\node_modules\mocha\lib\runner.js:811:10)
    at Runner.run (c:\leoboto\node_modules\mocha\lib\runner.js:838:5)
    at Mocha.run (c:\leoboto\node_modules\mocha\lib\mocha.js:521:17)
    at Object.<anonymous> (c:\leoboto\node_modules\mocha\bin\_mocha:458:18)
    at Module._compile (module.js:573:32)
    at Object.Module._extensions..js (module.js:582:10)
    at Module.load (module.js:490:32)
    at tryModuleLoad (module.js:449:12)
    at Function.Module._load (module.js:441:3)
    at Module.runMain (module.js:607:10)
    at run (bootstrap_node.js:420:7)
    at startup (bootstrap_node.js:139:9)
    at bootstrap_node.js:535:3
npm ERR! Test failed.  See above for more details.

Mocha 2.5.3

events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: write EINVAL
    at exports._errnoException (util.js:1022:11)
    at WriteStream.Socket._writeGeneric (net.js:715:26)
    at WriteStream.Socket._write (net.js:734:8)
    at doWrite (_stream_writable.js:334:12)
    at writeOrBuffer (_stream_writable.js:320:5)
    at WriteStream.Writable.write (_stream_writable.js:247:11)
    at WriteStream.Socket.write (net.js:661:40)
    at c:\leoboto\node_modules\mocha\bin\_mocha:426:12
    at Array.forEach (native)
    at exit (c:\leoboto\node_modules\mocha\bin\_mocha:423:11)
    at done (c:\leoboto\node_modules\mocha\lib\mocha.js:498:13)
    at Runner.<anonymous> (c:\leoboto\node_modules\mocha\lib\runner.js:799:5)
    at emitNone (events.js:91:20)
    at Runner.emit (events.js:185:7)
    at c:\leoboto\node_modules\mocha\lib\runner.js:786:12
    at Runner.runSuite (c:\leoboto\node_modules\mocha\lib\runner.js:584:12)
    at start (c:\leoboto\node_modules\mocha\lib\runner.js:784:10)
    at Runner.run (c:\leoboto\node_modules\mocha\lib\runner.js:811:5)
    at Mocha.run (c:\leoboto\node_modules\mocha\lib\mocha.js:502:17)
    at Object.<anonymous> (c:\leoboto\node_modules\mocha\bin\_mocha:404:18)
    at Module._compile (module.js:573:32)
    at Object.Module._extensions..js (module.js:582:10)
    at Module.load (module.js:490:32)
    at tryModuleLoad (module.js:449:12)
    at Function.Module._load (module.js:441:3)
    at Module.runMain (module.js:607:10)
    at run (bootstrap_node.js:420:7)
    at startup (bootstrap_node.js:139:9)
    at bootstrap_node.js:535:3
npm ERR! Test failed.  See above for more details.

Windows 10
Node v7.1.0

Any ideas what could be causing this?

Source

DeividasK

Most helpful comment

Have it error on Windows 10 with Node v7.1.0 (mocha 2.5.3/3.1.2)
But with node v.7.0.0 and older work nice!.

algv on 10 Nov 2016

👍2

All 8 comments

Hmm... So, this is an error calling process.stdout.write('', <callback>) or process.stderr.write('', <callback>). (Took me a moment to figure out the stack trace was from 2.5.3, but I found the code.) Are you piping or redirecting the output anywhere?