Nestjs: cannot inject ConfigService while testing

Question

I'm having problems setting up a unit test that utilizes the ConfigService to set up TypeORM. The test below fails with the following message:

Nest can't resolve dependencies of the TypeOrmModuleOptions (?). Please make sure that the argument ConfigService at index [0] is available in the TypeOrmCoreModule context.

I've tried adding the ConfigService as a provider, but with no luck. Any ideas on what I'm doing wrong?

import { ConfigModule, ConfigService } from '@nestjs/config';
import { Test } from '@nestjs/testing';
import { TypeOrmModule, TypeOrmModuleOptions } from '@nestjs/typeorm';

describe('TypeORM setup', () => {
    beforeEach(async () => {
        await Test.createTestingModule({
            providers: [ConfigService],
            imports: [
                ConfigModule.forRoot(),
                TypeOrmModule.forRootAsync({
                    useFactory: (config: ConfigService) => ({ ...config.get('db') }),
                    inject: [ConfigService],
                }),
            ],
        }).compile();
    });

    it('dummy', () => {
        true === true;
    });
});

Jackie McDoniel · Accepted Answer · 2022-05-03 19:04:43Z

14

You either need to set { isGlobal: true } as an option for the ConfigModule or you need to add imports: [ConfigModule] to the TypeOrmModule.forRootAsync() configuration

answered May 3, 2022 at 19:04

Jackie McDoniel

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1 Comment

francoiscabrol Over a year ago

weird enough, imports: [ConfigModule] was working for me to run the app but the config wasn't loaded (undefined variables) while running the e2e tests. I had to use imports: [ConfigModule.forRoot()], in MongooseModule.forRootAsync to fix the issue

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