CODEWITHSUNDEEP
node.jsnestjs
ofevy
ofevy

Reputation: 57

Nest can't resolve dependencies when running tests

I want to create a unit test for my NestJS service, which is a database repository.

I have an error: Nest can't resolve dependencies of the RescuerFunctionRepository (?). Please make sure that the argument "RescuerFunctionRepository" at index [0] is available in the RootTestModule context..

The code:

describe('RescuerFunctionRepository', () => {
  let repository: RescuerFunctionRepository

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [RescuerFunctionRepository],
    }).compile()

    repository = module.get<RescuerFunctionRepository>(RescuerFunctionRepository)
  })

    it('should be defined', () => {
      expect(repository).toBeDefined()
    })
})

It happens also when I add into Test.createTestingModule() an import statement with my module when I have registered SequelizeModule.

The structure of modules:

How can I resolve this error?

EDIT: RescuerFunctionRepository code:

import { Injectable } from '@nestjs/common'
import { InjectModel } from '@nestjs/sequelize'
import { CreationAttributes, Transaction, WhereOptions } from 'sequelize'
import { RescuerFunction } from '../../models/rescuer-function.model'

@Injectable()
export class RescuerFunctionRepository {
  constructor(
    @InjectModel(RescuerFunction)
    private userModel: typeof RescuerFunction
  ) {}

  find(where: WhereOptions<RescuerFunction>, trans?: Transaction): Promise<RescuerFunction | null> {
    return this.userModel.findOne({
      where: where,
      transaction: trans,
    })
  }

  insert(attributes: CreationAttributes<RescuerFunction>, trans?: Transaction): Promise<RescuerFunction> {
    return this.userModel.create(attributes, {
      transaction: trans,
    })
  }
}

Upvotes: 1

Views: 104

Answers (2)

ofevy
ofevy

Reputation: 57

I know what was wrong. To the DatabaseModule to exports, I added SequelizeModule (before this wasn't exported). Added DatabaseModule and ConfigModule (with appropriate path to the .env file) to imports in the test file.

Upvotes: 1

Mohit kavad
Mohit kavad

Reputation: 3

Also provide other service which you are using in your service.ts file

Upvotes: 0

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