ERROR: 'Potentially unhandled rejection on Windows10

[dotnetCarpenter]

I have deep dived into karma-jspm and tried to find a solution but are giving up. I get the following error when I run my tests via karma start :

09 03 2016 13:25:32.302:INFO [PhantomJS 2.1.1 (Windows 8 0.0.0)]: Connected on socket /#ELe2rL4fadNwgDfCAAAA with id 52977691
09 03 2016 13:25:32.477:WARN [web-server]: 404: /js/app.js
PhantomJS 2.1.1 (Windows 8 0.0.0) ERROR: 'Potentially unhandled rejection [4] http://localhost:9876/base/jspm_packages/system.src.js?281591da6090abed69cd0b080aa69c8de089a41c:733:14
tryCatchReject@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:1252:34
runContinuation1@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:1211:18
when@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:1032:20
run@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:890:17
_drain@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:166:22
drain@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:131:15'

09 03 2016 13:25:42.496:WARN [PhantomJS 2.1.1 (Windows 8 0.0.0)]: Disconnected (1 times), because no message in 10000 ms.

I'm not able to load any file (and I have tried many different paths). But if I put the same files in the karma config files array, they load. But since I use es2015 modules, that doesn't work without jspm.

I have the following structure:

karma.conf.js
config.js
js/
  |_app.js
  |_danishify.js
test/
  |_danishify.spec.js
images/
jspm_packages/
node_modules/

My karma.conf.js:

module.exports = function(config) {
    config.set({
        basePath: '',

        frameworks: ['jspm', 'jasmine'],
// list of files / patterns to load in the browser
        files: [
        ],

        jspm: {
            config: 'config.js',
            loadFiles: ['js/*.js','test/danishify.spec.js'],
            serveFiles: ['**/*.+(js|html|css|json|png|gif)']
        },

        // list of files to exclude
        exclude: [
        ],

        // preprocess matching files before serving them to the browser
        // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
        preprocessors: {
        },

        browsers: ['PhantomJS'],
       //         ...

I use es2015 modules in the test.

// danishify.spec.js
'use strict'
import danishify from '../js/danishify.js'

// danishify.js
export default (function(){
  // ...
}());

[dotnetCarpenter]

Hmm.. Perhaps it is the issue described in this article: http://martinmicunda.com/2015/10/19/how-to-start-writing-unit-tests-with-es6-angular-1x-and-jspm/

Depends on your application file structure you might see 404 error when you run your test. To fix this error you need to proxy your paths to /base/ prefix e.g.:

proxies: {
    '/test/': '/base/test/',
    '/src/app/': '/base/src/app/',
    '/jspm_packages/': '/base/jspm_packages/'
}

NOTE: This is bug in karma-jspm and it might be fix in the future so you will not need to proxy anything.

[dotnetCarpenter]

While using proxies, fixes the 404's my issue persist. Does anyone know what goes wrong?

npm test

> [email protected] test C:\Users\dotnet\Projects\playground\danishify
> karma start

09 03 2016 14:01:28.091:INFO [karma]: Karma v0.13.22 server started at http://localhost:9876/
09 03 2016 14:01:28.106:INFO [launcher]: Starting browser PhantomJS
09 03 2016 14:01:29.791:INFO [PhantomJS 2.1.1 (Windows 8 0.0.0)]: Connected on socket /#Dl5cayeEZwXpIKclAAAA with id 89243764
PhantomJS 2.1.1 (Windows 8 0.0.0) ERROR: 'Potentially unhandled rejection [3] http://localhost:9876/base/jspm_packages/system.src.js?281591da6090abed69cd0b080aa69c8de089a41c:733:14
tryCatchReject@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:1252:34
runContinuation1@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:1211:18
when@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:1032:20
run@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:890:17
_drain@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:166:22
drain@http://localhost:9876/base/jspm_packages/system-polyfills.src.js?3aa57969dce4ecea4c51aab540f372d15cc886b6:131:15'

09 03 2016 14:01:40.440:WARN [PhantomJS 2.1.1 (Windows 8 0.0.0)]: Disconnected (1 times), because no message in 10000 ms.

npm ERR! Test failed.  See above for more details.