No provider for Token AppId - unit-testing

Question

I have a unit test that is verifying the application's APP_ID is a fixed value. The problem is, I don't know how to set the APP_ID so that it's not randomly generated.
The documentation from the Angular2 team's website is helpful enough, but I'm not sure if I'm interpreting it correctly:
If you need to avoid randomly generated value to be used as an application id, you can provide a custom value via a DI provider configuring the root Injector using this token.
So does this mean I'd add it as a provider in my app's bootstrap?
bootstrap(App, [
provide(APP_ID, {name: 'MyApp'})
]);
I doubt that's remotely close. Has anyone else figured out how to set the APP_ID or what it's even used for?
injector.spec.ts
import {
it,
inject,
injectAsync,
beforeEachProviders,
TestComponentBuilder
} from 'angular2/testing';
import {APP_ID} from 'angular2/core';
describe('default test injector', () => {
it('should provide default id', inject([APP_ID], (id) => {
expect(id).toBe('MyApp');
}));
});

Answer 1

In test
describe('default test injector', () => {
beforeEachProviders(() => [provide(APP_ID, {useValue: 'MyApp'})]);
it('should provide default id', inject([APP_ID], (id) => {
expect(id).toBe('MyApp');
}));
});
for your real application you would write it this way
bootstrap(App, [
provide(APP_ID, {useValue: 'MyApp'})
]);