karma test pass but npm test give error - node.js

Question

i use https://github.com/AngularClass/angular2-webpack-starter and have foloowing problem: when I'm in project directory and run
karma start
Then i get:
SUMMARY:
✔ 0 tests completed
But when i run:
npm test
I get:
SUMMARY:
✔ 0 tests completed
npm ERR! Test failed. See above for more details.
If I run:
npm run test
I get:
SUMMARY:
✔ 0 tests completed
npm ERR! Darwin 16.1.0
npm ERR! argv "/usr/local/Cellar/node/7.1.0/bin/node" "/usr/local/bin/npm" "run" "test"
npm ERR! node v7.1.0
npm ERR! npm v4.0.2
npm ERR! code ELIFECYCLE
npm ERR! angular2-webpack-starter#5.0.5 test: `karma start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the angular2-webpack-starter#5.0.5 test script 'karma start'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the angular2-webpack-starter package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! karma start
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs angular2-webpack-starter
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls angular2-webpack-starter
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! /Users/Kamil/Desktop/Code/officewise/officewise_frontend/npm-debug.log
Any idea what to do to remove this npm ERR? This is important for me because I use some external system to run tests and report errors of new commits in repository (my node version v7.1.0 (lastest), npm version 4.0.2 (lastest), Mac OS Sierra).

Answer 1

By default, Karma exits with an error if there are no tests to run.
To disable this behaviour, you need to add this line to your Karma configuration:
failOnEmptyTestSuite: false