Cannot inject custom provider for dynamic module - nestjs

Question

I tried to create a dynamic module PermissionModule like the following:
permTestApp.module.ts
#Module({
imports: [PermissionModule.forRoot({ text: 'abc' })],
providers: [],
controllers: [PermissionTestController],
})
export class PermissionTestAppModule {}
permission.module.ts
import { DynamicModule, Module } from '#nestjs/common'
import { PermissionGuard } from './guard/permission.guard'
#Module({})
export class PermissionModule {
public static forRoot(config: { text: string }): DynamicModule {
return {
module: PermissionModule,
providers: [
{
provide: 'xoxo',
useValue: config.text,
},
PermissionGuard,
],
exports: [PermissionGuard],
}
}
}
permission.guard.ts
import {
CanActivate,
ExecutionContext,
Inject,
Injectable,
} from '#nestjs/common'
#Injectable()
export class PermissionGuard implements CanActivate {
constructor(#Inject('xoxo') private readonly config: string) {}
async canActivate(context: ExecutionContext): Promise<boolean> {
console.log(31, this.config)
return true
}
}
AFAIK, 'abc' string must be injected when PermissionGuard is used.
I tried to test it with the following code.
permission.e2e.spec.ts
beforeAll(async () => {
const moduleRef: TestingModule = await Test.createTestingModule({
imports: [PermissionTestAppModule],
})
.compile()
app = moduleRef.createNestApplication()
controller = await moduleRef.resolve(PermissionTestController)
await app.init()
})
but it says,
Nest can't resolve dependencies of the PermissionGuard (?). Please make sure that the argument xoxo at index [0] is available in the PermissionTestAppModule context.
Potential solutions:
- Is PermissionTestAppModule a valid NestJS module?
- If xoxo is a provider, is it part of the current PermissionTestAppModule?
- If xoxo is exported from a separate #Module, is that module imported within PermissionTestAppModule?
#Module({
imports: [ /* the Module containing xoxo */ ]
})
What am I doing wrong?