Can I capture tests from test.each tagged template literals for another context?

Question

Hundreds of automated tests to verify calculations, written using Jest's jest.each feature, need to be presented to decision-makers in another, more legible form. A typical test suite would start something like this (example numbers):

describe('Drug 1', () => {
test.each`
weight  | vial   | expectedMg | expectedMl  | clinicalCaseNumber
${140}  | ${250} | ${10}      | ${2}        | ${'I13'}
${140}  | ${500} | ${10}      | ${1}        | ${'I14'}

I would like to access the test data in my *.test.js files from the React app being tested so that permissioned users can review the automated tests being run.

I had hoped to do something like this:

export const DRUGS = {};
DRUGS['Drug 1'] = `
    weight  | vial   | expectedMg | expectedMl  | clinicalCaseNumber
    ${140}  | ${250} | ${10}      | ${2}        | ${'I13'}
    ${140}  | ${500} | ${10}      | ${1}        | ${'I14'}

And then use the template literals both with test.each here and within the application. However, this doesn't seem to be possible?

Answer 1

You can create a separate script as an entry point

package.json

{
  "scripts": {
    "test": "jest",
    "dump": "node scripts/dump.js",
    "posttest": "npm run dump"
  }
}

You can reuse jest-each to define a global test function and create the desired output

scripts/dump.js

const bindEach = require('jest-each').bind;
const glob = require('glob');

global.describe = (desc, cb) => {
  console.log(desc);
  cb();
};

const test = (desc, cb) => {
  console.log(desc);
};

test.each = bindEach(test);

global.test = test;

glob.sync('**/?(*.)+(spec|test).[tj]s?(x)').forEach((testFile) => {
  require(`./${testFile}`);
});