Type-di demo

typedi-demo.spec.ts

import 'reflect-metadata';
import {Container, Inject, Service} from "typedi";

describe('typedi demo', () => {
  it('should work', async () => {
    const query = () => 'hello from query';

    @Service()
    class Repository {

      constructor(@Inject('q') private q: () => string) {
      }

      public getHello(): string{
        return this.q();
      }
    }

    @Service()
    class ExampleService {
      constructor(private helloRepo: Repository) {
      }
      public getHello(): string{
        return this.helloRepo.getHello()
      }
    }

    Container.set('q', query);
    const service = Container.get(ExampleService)

    expect(service.getHello()).toBe("hello from query")
  });
})