[Beta 11] Jasmine error after upgrade to Beta 11

[danielgroh]

After updating to Betta 11 all my tests failed.

For most of them I mock the push method.

Here is the code:

beforeEachProviders(() => [
    HTTP_PROVIDERS,
    provide(XHRBackend, { useClass: MockBackend }),
    BackendService,
    provide(NavController, { useValue: { push: NavController.prototype.push } }),
    provide(NavParams, { useValue: { get: NavParams.prototype.get, data: NavParams.prototype.data } })
]);

That is the error:

Any idea?