Simple Karma spec using Sinon to mock a backend service for AngularJS testing

sinonKarma.spec.js

var someService;
    
beforeEach(inject(function (_someService_) {
    someService = sinon.mock(_someService_);
}));

afterEach(function () {
    entityServiceFactory.verify();
});

describe('someOtherService method', function () {
    it('should call someService', function () {
        someService.doCoolThings.withArgs('model', {day: "01/01/2010"}).returns([
            {name: "foo"},
            {name: "bar"}
        ]);

        var result = someOtherService.doReallyCoolThings({day: "01/01/2010"});

        expect(result[0].name).to.equal("foo");
    });
});