我有一个在其构造函数中使用 override func viewDidLoad() {
super.viewDidLoad()
if selectedIndex == 1 {
observeEnglishCases()
}
}
装饰器的服务。
我无法为此服务实例化testingModule。引发以下错误:@InjectConnection
服务构造函数:
Nest can't resolve dependencies of the AttachmentsService (?, winston). Please make sure that the argument at index [0] is available in the TestModule context.
测试模块构造函数:
constructor(@InjectConnection() private readonly mongooseConnection: Mongoose,
@Inject(Modules.Logger) private readonly logger: Logger) {
this.attachmentGridFsRepository = gridfs({
collection: 'attachments',
model: Schemas.Attachment,
mongooseConnection: this.mongooseConnection,
});
this.attachmentRepository = this.attachmentGridFsRepository.model;
}
我意识到我将不得不模拟GridFS可以调用的连接对象,但是现在我无法真正构建测试模块。
答案 0 :(得分:2)
当您不添加显式连接名称时,nest.js将use the default connection token DatabaseConnection
,由nestjs-mongoose包定义为常量:
export const DEFAULT_DB_CONNECTION = 'DatabaseConnection';
因此您可以使用getConnectionToken('Database')
:
providers: [AttachmentsService, {
provide: getConnectionToken('Database'),
useValue: {},
}]
合并请求。您现在可以getConnectionToken()
。
我创建了一个pull request,它使getConnectionToken()
无需任何参数即可返回默认的连接令牌。