我正在尝试使用ts-mockito测试API端点。一切顺利,直到我开始异步...我的测试:
it('should throw an error if the address is not valid',()=>{
const mockedGeolocationService: GoogleGeolocationService = mock(GoogleGeolocationService);
when(mockedGeolocationService.getLocation(address)).thenThrow(new Error("the address provided is not valid"));
const geolocationService: IGeolocationService = instance(mockedGeolocationService);
const addressService: AddressService = new AddressService(geolocationService, new MongoAddressRepository());
expect(() => addressService.storeAddress(address)).to.throw("the address provided is not valid");
});
服务:
public storeAddress = (address: Address): void => {
const location = this.geolocationService.getLocation(address);
address.setLocation(location);
this.addressRepository.store(address);
}
至此,一切正常。但是,当我开始实施地理位置服务时,由于它会执行http请求,因此不得不将其声明为Promise。
public storeAddress = async (address: Address): Promise<void> => {
const location = await this.geolocationService.getLocation(address);
address.setLocation(location);
this.addressRepository.store(address);
}
然后,我将无法捕获所有引发的错误,如果毕竟引发了...任何线索,我应该如何捕获或引发此错误?预先感谢。
我想出了解决错误的方法,为了让别人有帮助,我会留下答案。事实是,由于它是一个异步函数,因此无法捕获错误。必须手动处理它并比较错误(作为字符串),如下所示:
it('should throw an error if the address is not valid',(done)=>{
const mockedGeolocationService: GoogleGeolocationService = mock(GoogleGeolocationService);
when(mockedGeolocationService.getLocation(address)).thenThrow(new Error("the address provided is not valid"));
const geolocationService: IGeolocationService = instance(mockedGeolocationService);
const addressService: AddressService = new AddressService(geolocationService, new MongoAddressRepository());
addressService.storeAddress(address).catch(error => {
expect(error.toString()).to.be.equal(new Error("the address provided is not valid").toString());
done();
});
});