Generate ts files from feature files

generate-tests.js

const fs = require('fs');
const path = require('path');

const keywords = [
  'And',
  'Given',
  'Then',
  'When',
  'Feature:',
  'Scenario:',
  'Scenario Outline:',
  'Background:',
  'But',
];

const outputDir = path.join(__dirname, 'e2e/features/');
const featureDirectory = path.join(__dirname, 'e2e/features/');
const imports = "import { describe, it } from '@jest/globals' \n \n";

fs.readdir(featureDirectory, (err, files) => {
  if (err) {
    console.log(err);
    throw new Error('An error occured');
  }
  for (let i = 0; i < files.length; i++) {
    const file = files[i];
    console.log(file);
    if (path.extname(file) === '.feature') {
      const testName = file.split('.')[0];
      const keywordedList = fs
        .readFileSync(path.join(featureDirectory, file), { encoding: 'utf8' })
        .split('\n')
        .filter(x => x)
        .map(x => x.trim());
      let testTemplate = '';

      for (let j = 0; j < keywordedList.length; j++) {
        const step = keywordedList[j];
        const keyword = step.split(' ')[0];

        if (keywords.indexOf(keyword) === -1) {
          throw Error(`Step '${step}' is not valid Gherkin syntax`);
        }

        switch (keyword) {
          case 'Feature:':
            continue;
          case 'Scenario:':
            if (testTemplate.length !== 0) {
              testTemplate += '}); \n';
            }
            testTemplate += `describe('${step}',()=>{ \n`;
            break;
          case 'Then':
            testTemplate += `it('${step}',async()=>{ throw new Error('Not implemented'); }); \n`;

            break;
          case 'Given':
          case 'When':
          case 'And':
          case 'But':
            testTemplate += `it('${step}',async()=>{}); \n`;
            break;
        }
      }
      testTemplate += '});';
      testTemplate = [imports, testTemplate].join('');
      const testFileOutput = `${outputDir}/${testName}.test.ts`;

      if (!fs.existsSync(testFileOutput)) {
        fs.writeFile(testFileOutput, testTemplate, error => {
          if (error) {
            console.error('failed to create test files', error);
            return;
          }
        });
      }
    }
  }
  console.log('Test files generated 🧪 ✅');
});