Nest.js cannot resolve dependencies

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NestJS

I have been trying to resolve the two issues, but however I tried to check and fix all codes and the location of each repository, they are not solved.

The first error

FAIL src/users/users.service.spec.ts ● UsersService › should be defined Nest can't resolve dependencies of the UsersService (?). Please make sure that the argument "UserRepository" at index [0] is available in the RootTestModule context. Potential solutions: - Is RootTestModule a valid NestJS module? - If "UserRepository" is a provider, is it part of the current RootTestModule? - If "UserRepository" is exported from a separate u/Module, is that module imported within RootTestModule? u/Module({ imports: [ /* the Module containing "UserRepository" */ ] }) 6 | 7 | beforeEach(async () => { > 8 | const module: TestingModule = await Test.createTestingModule({ | ^ 9 | providers: [UsersService], 10 | }).compile(); 11 | at TestingInjector.lookupComponentInParentModules (../node_modules/@nestjs/core/injector/injector.js:254:19) at TestingInjector.resolveComponentInstance (../node_modules/@nestjs/core/injector/injector.js:207:33) at TestingInjector.resolveComponentInstance (../node_modules/@nestjs/testing/testing-injector.js:19:45) at resolveParam (../node_modules/@nestjs/core/injector/injector.js:128:38) at async Promise.all (index 0) at TestingInjector.resolveConstructorParams (../node_modules/@nestjs/core/injector/injector.js:143:27) at TestingInjector.loadInstance (../node_modules/@nestjs/core/injector/injector.js:70:13) at TestingInjector.loadProvider (../node_modules/@nestjs/core/injector/injector.js:97:9) at ../node_modules/@nestjs/core/injector/instance-loader.js:56:13 at async Promise.all (index 3) at TestingInstanceLoader.createInstancesOfProviders (../node_modules/@nestjs/core/injector/instance-loader.js:55:9) at ../node_modules/@nestjs/core/injector/instance-loader.js:40:13 at async Promise.all (index 1) at TestingInstanceLoader.createInstances (../node_modules/@nestjs/core/injector/instance-loader.js:39:9) at TestingInstanceLoader.createInstancesOfDependencies (../node_modules/@nestjs/core/injector/instance-loader.js:22:13) at TestingInstanceLoader.createInstancesOfDependencies (../node_modules/@nestjs/testing/testing-instance-loader.js:9:9) at TestingModuleBuilder.createInstancesOfDependencies (../node_modules/@nestjs/testing/testing-module.builder.js:118:9) at TestingModuleBuilder.compile (../node_modules/@nestjs/testing/testing-module.builder.js:74:9) at Object.<anonymous> (users/users.service.spec.ts:8:35)

users.service.spec.ts

import { Test, TestingModule } from '@nestjs/testing'; import { UsersService } from './users.service'; describe('UsersService', () => { let service: UsersService; beforeEach(async () => { const module: TestingModule = await Test.createTestingModule({ providers: [UsersService], }).compile(); service = module.get<UsersService>(UsersService); }); it('should be defined', () => { expect(service).toBeDefined(); }); });

The second error

Nest can't resolve dependencies of the UsersController (?, AuthService). Please make sure that the argument UsersService at index [0] is available in the RootTestModule context. Potential solutions: - Is RootTestModule a valid NestJS module? - If UsersService is a provider, is it part of the current RootTestModule? - If UsersService is exported from a separate u/Module, is that module imported within RootTestModule? u/Module({ imports: [ /* the Module containing UsersService */ ] }) 6 | 7 | beforeEach(async () => { > 8 | const module: TestingModule = await Test.createTestingModule({ | ^ 9 | controllers: [UsersController], 10 | }).compile(); 11 | at TestingInjector.lookupComponentInParentModules (../node_modules/@nestjs/core/injector/injector.js:254:19) at TestingInjector.resolveComponentInstance (../node_modules/@nestjs/core/injector/injector.js:207:33) at TestingInjector.resolveComponentInstance (../node_modules/@nestjs/testing/testing-injector.js:19:45) at resolveParam (../node_modules/@nestjs/core/injector/injector.js:128:38) at async Promise.all (index 0) at TestingInjector.resolveConstructorParams (../node_modules/@nestjs/core/injector/injector.js:143:27) at TestingInjector.loadInstance (../node_modules/@nestjs/core/injector/injector.js:70:13) at TestingInjector.loadController (../node_modules/@nestjs/core/injector/injector.js:88:9) at ../node_modules/@nestjs/core/injector/instance-loader.js:68:13 at async Promise.all (index 0) at TestingInstanceLoader.createInstancesOfControllers (../node_modules/@nestjs/core/injector/instance-loader.js:67:9) at ../node_modules/@nestjs/core/injector/instance-loader.js:42:13 at async Promise.all (index 1) at TestingInstanceLoader.createInstances (../node_modules/@nestjs/core/injector/instance-loader.js:39:9) at TestingInstanceLoader.createInstancesOfDependencies (../node_modules/@nestjs/core/injector/instance-loader.js:22:13) at TestingInstanceLoader.createInstancesOfDependencies (../node_modules/@nestjs/testing/testing-instance-loader.js:9:9) at TestingModuleBuilder.createInstancesOfDependencies (../node_modules/@nestjs/testing/testing-module.builder.js:118:9) at TestingModuleBuilder.compile (../node_modules/@nestjs/testing/testing-module.builder.js:74:9) at Object.<anonymous> (users/users.controller.spec.ts:8:35)

users.controller.spec.ts

import { Test, TestingModule } from '@nestjs/testing'; import { AppController } from './app.controller'; import { AppService } from './app.service'; describe('AppController', () => { let appController: AppController; beforeEach(async () => { const app: TestingModule = await Test.createTestingModule({ controllers: [AppController], providers: [AppService], }).compile(); appController = app.get<AppController>(AppController); }); describe('root', () => { it('should return "Hello World!"', () => { expect(appController.getHello()).toBe('Hello World!'); }); }); });

What I have tried:

I wrote the below code

  1  import { DEFAULT_FACTORY_CLASS_METHOD_KEY } from '@nestjs/common/module-utils/constants';
  2  
  3  
  4  const moduleMocker = new ModuleMocker(global);
  5  
  6  describe('CatsController', () => {
  7    let controller: UsersController;
  8  
  9    beforeEach(async () => {
 10      const moduleRef = await Test.createTestingModule({
 11        controllers: [UsersController],
 12      })
 13        .useMocker((token) => {
 14          const results = ['test1', 'test2'];
 15          if (token === UsersService) {
 16            return { findAll: jest.fn().mockResolvedValue(results) };
 17          }
 18          if (typeof token === 'function') {
 19            const mockMetadata = moduleMocker.getMetadata(token) as MockFunctionMetadata<any, any="">;
 20            const Mock = moduleMocker.generateFromMetadata(mockMetadata);
 21            return new Mock();
 22          }
 23        })
 24        .compile();
 25  
 26      controller = moduleRef.get(UsersController);
 27    });
 28  });