UI5

I just started with karma runner, would like to use it to run my unit tests. The structure of my application is pretty standard, yet I have trouble setting up the karma.conf.js file. I try to direct karma to my allTests.js file which references all unit test files (when tested through unitTests.qunit.html file, all works as expected). Path to my allTests.js file

webapp/test/unit/allTests.js

And this is how the relevant section of karma.conf.js file looks like:

config.set({    
    openui5: {
      path: 'https://openui5.hana.ondemand.com/1.65.1/resources/sap-ui-core.js'
    },

    client: {
      openui5: {
        tests: [
          'test/unit/allTests'
        ],
        config: {
          language: 'EN',
          resourceroots: {
            'test': './webapp/test'
          }
        } 
      }
    },

    basePath: 'webapp',

    frameworks: ['qunit', 'openui5'],

    files: [
      { pattern: '**', included: false, served: true, watched: true }
    ],

When executed, I assumed that karma would be able to find the allTests.js file, however, it throws this error.

03 07 2019 14:50:48.462:WARN [web-server]: 404: /webapp/test/unit/allTests.js
Firefox 66.0.0 (Ubuntu 0.0.0) ERROR
Error: failed to load 'test/unit/allTests.js' from ./webapp/test/unit/allTests.js: 404 - Not Found at https://openui5.hana.ondemand.com/1.65.1/resources/sap-ui-core.js:86:37

Does someone see where is the problem? Is the fact that I am using CDN for sap-ui-core.js somehow messing with the paths and is the system looking for the AllTests.js file on the openui.hana server. And if yes, how to fix it?