mocking RPC context coming from RabbitMq in jest, nestjs - unit-testing

Question

I'm trying to write unit tests for my controller in nestjs, here's the source of my controller:
import { Controller, Inject, Logger } from '#nestjs/common'
import { CONTEXT, MessagePattern, RequestContext } from '#nestjs/microservices'
import { CustomersService } from './customer.service'
#Controller("customers")
export class CustomersController {
constructor(
#Inject(CONTEXT)
private ctx: RequestContext,
private readonly customersService: CustomersService
) {}
#MessagePattern("ticketing_customer_actions")
async customersActions(): Promise<RpcResult> {
const data = this.ctx.data;
if (data.customerInfo.expire_date) {
try {
"REST OF THE CODE ....."
data is the where the json comes to my controller from the rabbitmq, so I need to mock this.ctx.data and that's what I do not know how to do. I mocked my service with just giving my service path to the jest.mock() function.
Here's my test so far:
jest.mock("../Customers/customer.service.ts");
describe("CustomersController", () => {
let controller: CustomersController;
let service: CustomersService;
beforeEach(async () => {
const module: TestingModule = await Test.createTestingModule({
controllers: [CustomersController],
providers: [CustomersService],
}).compile();
service = module.get<CustomersService>(CustomersService);
controller = module.get<CustomersController>(CustomersController);
});
it("should be defined", () => {
expect(controller).toBeDefined();
});
it("CustomersActions", async () => {
const result = new RpcResult({});
jest
.spyOn(service, "customersActions")
.mockImplementation(async () => result);
expect(await controller.customersActions()).toBe(result);
});
});