I have a index.js file in nodejs as below,

const child1 = async (arg)=> {
//axios.post(<url>, {input: arg})
}

I have index.js file as below code

const child1 = async (arg) {
   //const resp = test; //axios.post(<url>, {input: arg})
   return resp;
}
const parent = async () {
   const arg = 'custom_id'
   const c1 = await child1(arg)
   return c1
}
module.exports = {child1, parent}

I want to write unit test case in index.test.js as below,

const {child1, parent} = require('./index')
describe('parent', () => {
   it('calls child1 with the correct argument', async () => {
      const mockupResponse = 'test'
      child1.mockResolvedValue(mockupResponse);
      await parent();
      expect(child1).toHaveBeenCalledWith('custom_id');
   });
});

Output:
Expected:custom_id
Number of calls: 0



I also tried with other way - manual mock

jest.mock('./index', ()=>{
    const orginalModule = jest.requireActual('./../index')
    return {
        ...orginalModule,
        child1: jest.fn()
    }
})
const {child1, parent} = require('./index')
describe('parent', () => {
   it('calls child1 with the correct argument', async () => {
      child1.mockResovedValue('test')
      await parent();
      expect(child1).toHaveBeenCalledWith('custom_id');
   });
});

Output:
Expected:custom_id
Number of calls: 0

In debugging, for test command ‘npm run test’, child1 function has invoked from parent() function but it looks like mocking of child function is not took place. Please suggest.