run-tests

#!/usr/bin/env node

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

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  const fileName = process.argv[2] || 'index.html';

  // Open NMEA Generator inside a headless browser.
  try {
    await page.goto(`file:${path.join(__dirname, fileName)}`);
    await page.waitForTimeout(1000);
  } catch (error) {
    console.error(`Could not open file: '${fileName}'.`);
    process.exit(1);
  }

  // Use console messages to detect test failure/success.
  page.on('console', (message) => {
    const testResult = message.text();
    if (testResult.startsWith('[FAIL]')) {
      console.error(testResult);
      process.exit(1);
    }
    console.log(testResult);
  });

  // Tests are executed by invoking runTests() inside the browser.
  await page.evaluate('runTests()');
  await browser.close();
})();