[英]throw an error using ts-mockito in async function
我正在尝试使用 ts-mockito 测试 API 端点。 事情进展顺利,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);
}
到目前为止,一切正常。 但是当我开始实现地理定位服务时,我不得不将它声明为一个 promise,因为它执行的是一个 http 请求。
public storeAddress = async (address: Address): Promise<void> => {
const location = await this.geolocationService.getLocation(address);
address.setLocation(location);
this.addressRepository.store(address);
}
然后我无法再捕获抛出的错误,如果它毕竟被抛出......我应该如何捕获或抛出这个错误? 提前致谢。
我想出了如何处理错误,我留下答案以防万一它对某人有帮助。 问题是因为它是一个异步函数,所以它不会捕获错误。 它必须手动处理并比较错误(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();
});
});
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