Function populateTestsForLang

curriculum/src/test/test-challenges.js:168–390

({ lang, challenges, meta })

}

async function populateTestsForLang({ lang, challenges, meta }) {
  // We have to dynamically import this because otherwise it will not be mocked.
  // Presumably this is because we import from_this file in the generated block
  // test files and that happens before the mock is applied.
  const { buildChallenge } =
    await import('@freecodecamp/challenge-builder/build');
  const validateChallenge = challengeSchemaValidator();

  describe(`Language: ${lang}`, function () {
    const challengeTitles = new ChallengeTitles();
    const mongoIds = new MongoIds();

    challenges.forEach((challenge, id) => {
      // When testing single challenge, in project based curriculum,
      // challenge to test (current challenge) might not have solution.
      // Instead seed from next challenge is tested against tests from
      // current challenge. Next challenge is skipped from testing.
      if (FCC_CHALLENGE_ID && id > 0) return;

      const dashedBlockName = challenge.block;
      // TODO: once certifications are not included in the list of challenges,
      // stop returning early here.
      if (typeof dashedBlockName === 'undefined') return;
      describe(`Block: ${challenge.block}`, function () {
        describe(`Title: ${challenge.title}`, function () {
          describe(`ID: ${challenge.id}`, function () {
            // Note: the title in meta.json are purely for human readability and
            // do not include translations, so we do not validate against them.
            it(`Matches an ID in ${challenge.block}.json`, function () {
              const index = meta[dashedBlockName]?.challengeOrder?.findIndex(
                ({ id }) => id === challenge.id
              );
              expect(
                index,
                `Cannot find ID "${challenge.id}" in ${challenge.block}.json file for block "${dashedBlockName}"`
              ).toBeGreaterThanOrEqual(0);
            });

            it('Common checks', function () {
              const result = validateChallenge(challenge);

              expect(result.error).toBeUndefined();
              const { id, block, dashedName } = challenge;

              expect(dashedName).toBeDefined();

              const pathAndTitle = `${block}/${dashedName}`;
              const idVerificationMessage = mongoIds.check(id, block);
              expect(idVerificationMessage).toBeNull();
              const dupeTitleCheck = challengeTitles.check(dashedName, block);
              expect(
                dupeTitleCheck,
                `All challenges within a block must have a unique dashed name. ${dashedName} (at ${pathAndTitle}) is already assigned`
              ).toBeTruthy();
            });

            const { challengeType } = challenge;