karma-wiredep 

> Loads bower dependencies into your test scope.

If you want to have all of your production or development bower dependencies into your karma tests, such as sinon or jasmine-jquery, you can easily
do it with this plugin with the help of wiredep

Simple example

npm install karma-wiredep --save-dev

Then add into your karma.conf.js

``js
module.exports = function(config) {
config.set({
frameworks: ['wiredep', 'jasmine'],

//you can configure wiredep from here (optional)
wiredep: {
dependencies: true, // default: true
devDependencies: true, // default: false
exclude: [ /jquery/, 'bower_components/modernizr/modernizr.js' ],
overrides: { ... }
},

plugins : [ 'karma-wiredep' ]
});
};
`

All the bower dependencies will be included. If some package is missing the main section in its bower.json, you can configure the overrides section for that package.

Also note that plugin should be included in frameworks` section before your test framework
(mocha or jasmine).

[bower]: http://bower.io