Trying to setup unit testing

[josecelano]

I'm trying to set up the basic scaffolding for unit testing, but I have not been able so far.

I wanted to add unit tests to sanitize HTML functions in this PR.

It's not working because it can't resolve nuxt paths like #build, #imports, ...

This PR includes the configuration I've been trying so far.

Links

• https://medium.com/@fgoessler/set-up-nuxt3-with-jest-typescript-80aa4d3cfabc by @FGoessler

[josecelano]

I've tried to fix hundreds of errors. The lastest one is:

 npm run test

> test
> jest --config jest.config.ts --coverage

 FAIL  src/domain/services/sanitizer.test.ts
  ● Test suite failed to run

    Configuration error:
    
    Could not locate module #build/nuxt.config.mjs mapped as:
    /home/josecelano/Documents/git/committer/me/github/torrust/torrust-index-frontend/.nuxt/$1.
    
    Please check your configuration for these entries:
    {
      "moduleNameMapper": {
        "/^#build\/(.*)$/": "/home/josecelano/Documents/git/committer/me/github/torrust/torrust-index-frontend/.nuxt/$1"
      },
      "resolver": undefined
    }

      1 | import { PublicSettings, Category, TokenResponse, TorrentTag } from "torrust-index-types-lib";
      2 | import { Rest } from "torrust-index-api-lib";
    > 3 | import { useRuntimeConfig, useState } from "#app";
        | ^
      4 | import { notify } from "notiwind-ts";
      5 |
      6 | export const useRestApi = () => useState<Rest>("rest-api", () => new Rest(useRuntimeConfig().public.apiBase));

      at createNoMappedModuleFoundError (node_modules/jest-resolve/build/resolver.js:759:17)
      at Object.<anonymous> (node_modules/nuxt/dist/app/composables/payload.js:6:1)
      at Object.<anonymous> (node_modules/nuxt/dist/app/composables/index.js:17:1)
      at Object.<anonymous> (node_modules/nuxt/dist/app/index.js:2:1)
      at Object.<anonymous> (composables/states.ts:3:1)
      at Object.<anonymous> (src/domain/services/sanitizer.ts:2:1)
      at Object.<anonymous> (src/domain/services/sanitizer.test.ts:2:1)

----------|---------|----------|---------|---------|-------------------
File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
----------|---------|----------|---------|---------|-------------------
All files |       0 |        0 |       0 |       0 |                   
----------|---------|----------|---------|---------|-------------------
Test Suites: 1 failed, 1 total
Tests:       0 total
Snapshots:   0 total
Time:        1.743 s
Ran all test suites.