Function delegateSelectors

core/util/runPuppet.js:307–384

(
  page,
  browser,
  scenario,
  viewport,
  variantOrScenarioLabelSafe,
  scenarioLabelSafe,
  config,
  selectors,
  selectorMap,
  logger
)

// TODO: Should be in engineTools
async function delegateSelectors (
  page,
  browser,
  scenario,
  viewport,
  variantOrScenarioLabelSafe,
  scenarioLabelSafe,
  config,
  selectors,
  selectorMap,
  logger
) {
  const compareConfig = { testPairs: [] };
  let captureDocument = false;
  let captureViewport = false;
  const captureList = [];
  const captureJobs = [];

  selectors.forEach(function (selector, selectorIndex) {
    const testPair = engineTools.generateTestPair(config, scenario, viewport, variantOrScenarioLabelSafe, scenarioLabelSafe, selectorIndex, selector);
    const filePath = config.isReference ? testPair.reference : testPair.test;
    const logFilePath = config.isReference ? testPair.referenceLog : testPair.testLog;

    if (!config.isReference) {
      compareConfig.testPairs.push(testPair);
    }

    selectorMap[selector].filePath = filePath;
    selectorMap[selector].logFilePath = logFilePath;
    if (selector === BODY_SELECTOR || selector === DOCUMENT_SELECTOR) {
      captureDocument = selector;
    } else if (selector === VIEWPORT_SELECTOR) {
      captureViewport = selector;
    } else {
      captureList.push(selector);
    }
  });

  if (captureDocument) {
    captureJobs.push(function () { return captureScreenshot(page, browser, captureDocument, selectorMap, config, [], viewport, logger); });
  }
  // TODO: push captureViewport into captureList (instead of calling captureScreenshot()) to improve perf.
  if (captureViewport) {
    captureJobs.push(function () { return captureScreenshot(page, browser, captureViewport, selectorMap, config, [], viewport, logger); });
  }
  if (captureList.length) {
    captureJobs.push(function () { return captureScreenshot(page, browser, null, selectorMap, config, captureList, viewport, logger); });
  }

  return new Promise(function (resolve, reject) {
    let job = null;
    const errors = [];
    const next = function () {
      if (captureJobs.length === 0) {
        if (errors.length === 0) {
          resolve();
        } else {
          reject(errors);