Testing with Karma

I'm a beginner with Karma, and I can't make a test work on my project. I tried with this : http://ift.tt/1ycVXDm The exemple works with the "html page testing", but I can't make it work with start karma.conf.js (I got : Executed 0 of 0 ERROR)

Here is my karma.conf.js file :

module.exports = function(config) {
  config.set({
    basePath: '',
    frameworks: ['mocha', 'chai'],
    files: [
        'node_modules/angular/angular.js',
        'node_modules/angular-mocks/angular-mocks.js',
        'src/client/api/category/category.model.js'
    ],
    exclude: [
    ],
    preprocessors: {
    },
    reporters: ['progress'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false
    });
  };

Here is the file I want to test : (src/client/api/category/category.model.js)

angular.module("aq.kiosk.api.category.models")
.factory("CategoryModel", [
    function () {

        var CategoryModel = function (data) {

            this.id = "";
            this.name = "";
            this.description = "";
            this.mediaUrls = [];
            this.kind = "";
            this.childCount = "";
            this.issueCount = "";
            this.issues = [];

            if (angular.isDefined(data)) {
                this.parse(data);
            }
        };

        CategoryModel.prototype.parse = function (data) {
            if (data) {
                var self = this;
                angular.forEach(data, function (value, key) {
                    self[key] = value;
                });
            }
        };

        return CategoryModel;
    }
]);

And here is my test file :

describe("categorymodel", function() {

var data = {
            childCount: "0",
            description: "",
            id: "16",
            issueCount: 0,
            kind: "",
            mediaUrls: [],
            name: "Lorem Ipsum"
        };

beforeEach(module('aq.kiosk.api.category.models'));

var category = new CategoryModel(data);

  describe("constructor", function(){
    it('assigns a name', function () {
      expect(category).to.have.property('name', "");
    });

  });

});

The error I get is : Uncaught Error: [$injector:nomod] Module 'aq.kiosk.api.category.models' is not available!

I don't know what i'm doing wrong, thank you very much for your help.