import { ReflectiveInjector } from '@angular/core'; import { Global, globalProvider } from './global.value'; describe('Global', () => { let value: any; beforeEach(() => { const injector = ReflectiveInjector.resolveAndCreate([globalProvider]); value = injector.get(Global); }); it('should be `window`', () => { expect(value).toBe(window); }); });