showSeed.test.ts

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

import * as path from 'path';
import {extractSummary, replaceSeed} from '../Utils';
import runJest from '../runJest';

const dir = path.resolve(__dirname, '../jest-object');

const randomSeedValueRegExp = /Seed:\s+<<REPLACED>>/;
const seedValueRegExp = /Seed:\s+1234/;

describe.each(['showSeed', 'randomize'])('Option %s', option => {
  test(`--${option} changes report to output seed`, () => {
    const {stderr} = runJest(dir, [`--${option}`, '--no-cache']);

    const {summary} = extractSummary(stderr);

    expect(replaceSeed(summary)).toMatch(randomSeedValueRegExp);
  });

  test(`if --${option} is not present the report will not show the seed`, () => {
    const {stderr} = runJest(dir, ['--seed', '1234']);

    const {summary} = extractSummary(stderr);

    expect(replaceSeed(summary)).not.toMatch(randomSeedValueRegExp);
  });

  test(`if ${option} is present in the config the report will show the seed`, () => {
    const {stderr} = runJest(dir, [
      '--seed',
      '1234',
      '--config',
      `${option}-config.json`,
    ]);

    const {summary} = extractSummary(stderr);

    expect(summary).toMatch(seedValueRegExp);
  });

  test(`--seed --${option} will show the seed in the report`, () => {
    const {stderr} = runJest(dir, [`--${option}`, '--seed', '1234']);

    const {summary} = extractSummary(stderr);

    expect(summary).toMatch(seedValueRegExp);
  });
});