NestJS - Mongoose @InjectConnection unit testing
When you do not add an explicit connection name, nest.js will use the default connection token DatabaseConnection, which is defined as a constant by the nestjs-mongoose package:
export const DEFAULT_DB_CONNECTION = 'DatabaseConnection';So you can use getConnectionToken('Database'):
providers: [AttachmentsService, { provide: getConnectionToken('Database'), useValue: {},}]Update 2019
The pull request was merged. You can now getConnectionToken().
I have created a pull request which lets getConnectionToken() without any parameters return the default connection token.