Question

根据我的理解，我认为装饰器应该进行e2e测试，而不是单元测试。但是我创建了一个自定义的装饰器。该方案与电话号码有关。根据加载的环境，仅基于有限数量的电话号码的提供者可以接受。我结束了以下内容：

import { registerDecorator, ValidationOptions, ValidationArguments } from 'class-validator';
import { settings } from "../config/settings";
export function IsValidPhoneNumber(property: string, validationOptions?: ValidationOptions) {
  return function (object: Object, propertyName: string) {
    registerDecorator({
      name: 'isValidPhoneNumber',
      target: object.constructor,
      propertyName: propertyName,
      constraints: [property],
      options: validationOptions ? validationOptions : { message : "invalidPhoneNumber"} ,
      validator: {
        validate(value: any, args: ValidationArguments) {
          let allowedPhoneProvider = false;
          if (phoneIsValidBasedOnEnv){
               allowedPhoneProvider = true
          }
          return typeof value === 'string' && allowedPhoneProvider;
        },
      },
    });
  };
}

现在进入我的dto：

import { IsValidPhoneNumber } from "./phone-validator";
export class BookDto {

    @IsNotEmpty()
    @IsValidPhoneNumber('phone')
    phone : string;
}

现在我在为IsValidPhoneNumber（）编写测试中迷路了。我有以下内容：

import { IsValidPhoneNumber } from './phone-validator';


describe("Validators", () =>{
    it("should return true for valid numbers", () =>{
        const b = IsValidPhoneNumber("phone");
        
        console.log(b({"phoone":"098548000","phone"});

     })
})

我阅读了以下有关使用工厂测试装饰器的信息，但args始终未定义。

import { ROUTE_ARGS_METADATA } from '@nestjs/common/constants';

function getParamDecoratorFactory(decorator: Function) {
    class Test {
      public test(@decorator() value) { }
    }
  
    const args = Reflect.getMetadata(ROUTE_ARGS_METADATA, Test, 'test');
    // args is undefined
   
    return args[Object.keys(args)[0]].factory;
  }

为dto编写用于定制验证程序的单元测试

0 个答案: