text: const fs = require('fs-extra');
  const {semverRegExp, readmes} = require('../scripts/utilities');
  
  describe('readme-update-version', () => {
    it('matches 5 semver numbers in READMEs', () => {
      const occurrences = readmes.reduce((accumulator, readmePath) => {
        const readme = fs.readFileSync(readmePath, 'utf8');
        return accumulator + (readme.match(semverRegExp) || []).length;
      }, 0);
  
      expect(occurrences).toBe(4);
    });
  
    it('semverRegExp matches a variety of valid semver numbers', () => {
      const testCase =
        'Version 2.5.0 (or v2.5.0) and 99.99.99-beta.1 are valid, so is version v100.200.300. But, foo.bar.qux is not';
      const occurrences = (testCase.match(semverRegExp) || []).length;
  
      expect(occurrences).toBe(4);
    });
  });
  