Mock api request Jest NodeJs - node.js

Question

I'm trying to test the following code:
adapter.js
async function adapt(message) {
let parser = JSON.parse(message.content.toString());
let apiResult = await api(parser.id);
let result = apiResult.data.data;
return adapptedMessage = {"id": result.id}
}
This is my api call.
server.js
const axios = require('axios');
const url = process.env.URL;
function getApi(id) {
return axios.get(url + id).catch(function (error) {
if (error.response) {
// Request made and server responded
console.log(error.response.data);
console.log(error.response.status);
console.log(error.response.headers);
} else if (error.request) {
// The request was made but no response was received
console.log(error.request);
} else {
// Something happened in setting up the request that triggered an Error
console.log('Error', error.message);
}});
}
module.exports = getApi
This is how I tried to test.
test.js
jest.mock('./server');
const axios = require('axios');
const adapt = require('./adapter');
describe("Adapter Test", () => {
test("adapt", async () => {
var result = await adapt(getMessage());
const mockResp = {"data":{"data": {"id":10}}};
axios.get = jest.fn(() => mockResp);
assert
expect(result).toStrictEqual(getOfferMessage());
});
})
function getMessage() {
return {"content":"{\"id\":10}"};
}
This is my first test in js, and I don't know how to mock the api call.
All I get is "undefined".
Could you help me?
Thanks

Answer 1

You should pass a factory function to jest.mock when mocking your server module
const mockResp = {"data":{"data": {"id":10}}};
jest.mock('./server', () => () => mockResp);
const adapt = require('./adapter');
describe("Adapter Test", () => {
test("adapt", async () => {
const result = await adapt(getMessage());
expect(result).toStrictEqual({ id: 10 });
});
})
function getMessage() {
return {"content":"{\"id\":10}"};
}