Unit test always return undefined when authenticator.authenticate is called.

[llllOllOOll]

Hello everyone, how are you? I would like to ask for your help to review a test I wrote to test a feature that uses remix-auth. I would like to know if what I am trying to do is possible or if I need to use another tool to perform this type of test. What I noticed is that I cannot capture the return of the authenticator.authenticate method after the redirect, I always get 'undefined

export async function action({ request }: ActionArgs) {
  return await authenticator.authenticate("form", request, {
    successRedirect: "/dashboard",
    failureRedirect: "/login",
  });
}

#---------------Test --------------------------------------------

import { redirect } from "react-router";
import { action } from "~/routes/login";

describe("Login", () => {
  it.only("should return a redirect", async () => {
    let response;

    let body = new URLSearchParams({
      email: "seven@gmail.comd",
      password: "123",
    });

    let request = new Request(`http://localhost:3000/login`, {
      method: "POST",
      body,
    });

    try {
      response = await action({
        request,
        params: {},
        context: {},
      });
    } catch (error) {}

    expect(response).toEqual(redirect("/dashboard"));
  });
});

 FAIL  app/modules/auth/login/login.spec.ts > Login > should return a redirect
AssertionError: expected undefined to deeply equal Response{ size: +0, …(2) }
 ❯ app/modules/auth/login/login.spec.ts:26:21
     24|     } catch (error) {}
     25| 
     26|     expect(response).toEqual(redirect("/dashboard"));
       |                     ^
     27|   });
     28| });

  - Expected  - 25
  + Received  + 1
  
  - NodeResponse {
  -   "size": 0,
  -   Symbol(Body internals): Object {
  -     "body": null,
  -     "boundary": null,
  -     "disturbed": false,
  -     "error": null,
  -     "size": 0,
  -     "type": null,
  -   },
  -   Symbol(Response internals): Object {
  -     "counter": 0,
  -     "headers": Headers {
  -       Symbol(query): Array [
   - ...
  + "undefined"

[sergiodxa]

That’s expected, the redirects are thrown so you need to assert the thrown value.

[llllOllOOll]

Thank you! I'll do that.