Function visualDiff

build-system/tasks/visual-diff/index.js:596–623

* Runs the AMP visual diff tests. * @return {Promise }

()

 * @return {Promise<void>}
 */
async function visualDiff() {
  const handlerProcess = createCtrlcHandler('visual-diff');
  await ensureOrBuildAmpRuntimeInTestMode_();
  decodePercyTokenForCi();
  maybeOverridePercyEnvironmentVariables();
  setPercyBranch();
  setPercyTargetCommit();

  if (argv.grep) {
    argv.grep = RegExp(argv.grep);
  }

  if (argv.dev) {
    argv['percy_disabled'] = true;
  }

  if (!argv.percy_disabled && !process.env.PERCY_TOKEN) {
    log('fatal', 'Could not find', cyan('PERCY_TOKEN'), 'environment variable');
  }

  const percy = await launchPercyAgent();
  try {
    await performVisualTests();
  } finally {
    await percy?.stop();
  }
  exitCtrlcHandler(handlerProcess);
}

/**
 * Runs the AMP visual diff tests.