Function waitForPageLoad

build-system/tasks/visual-diff/verifiers.js:107–124

* Wait for all AMP loader indicators to disappear. * * @param {!puppeteer.Page} page page to wait on. * @param {string} testName the full name of the test. * @param {number} timeoutMillis how long to retry. * @return {Promise } * @throws {Error} an encountered error.

(
  page,
  testName,
  timeoutMillis = CSS_SELECTOR_TIMEOUT_MS
)

 * @throws {Error} an encountered error.
 */
async function waitForPageLoad(
  page,
  testName,
  timeoutMillis = CSS_SELECTOR_TIMEOUT_MS
) {
  const allLoadersGone = await waitForElementVisibility(
    page,
    '[class~="i-amphtml-loader"], [class~="i-amphtml-loading"]',
    {hidden: true},
    timeoutMillis
  );
  if (!allLoadersGone) {
    throw new Error(
      `${cyan(testName)} still has the AMP loader dot ` +
        `after ${CSS_SELECTOR_TIMEOUT_MS} ms`
    );
  }
}

/**
 * Wait until the element is either hidden or visible or until timed out.