Question: Way to list all test files without @groups?

[BenWoodworth]

Is there a way to list all the test files that don't have a runner @group? My team wants to add a git hook that makes sure every test in our project has at least one group (in case we forget to add a group to a new test file, since we want each to have at least one).

Right now I've got a script using jest --listTests to list the test files, and regex parsing each for /*...@group XXX...*/ at the top of the file. If there's a better way I'd love to know! :)

[BenWoodworth]

This is what I'm going with for now (instead of a regex) after finding how you get the groups with jest-docblock:

import * as fs from "fs";
import * as docblock from "jest-docblock";

// Based on https://github.com/eugene-manuilov/jest-runner-groups/blob/3c9d3cf4cb3e595bdea733100f2bdc8d64f871d7/index.js#L36-L51
function getJestRunnerGroups(file: string): Array<string> {
  const parsed = docblock.parse(fs.readFileSync(file, "utf8"));

  if (!parsed.group) return [];

  const groups = Array.isArray(parsed.group) ? parsed.group : [parsed.group];
  return groups.filter((group) => typeof group === 'string')
}

[SassNinja]

@BenWoodworth may I ask what groups you use?

I'm just curious because at the moment I'm defining the testing setup for a large project and I'm torn between multiple jest config files (own config for each group) and this jest-runner-groups package.

Since I only consider one group per file (xxxx.unit.test.ts for unit tests and xxxx.component.test.ts for component tests) I tend to rather use multiple configs with different filename regex. However I'm wondering if I oversee some benefits of defining multiple groups per file.