wip. test checking

Author: GoodDayForSurf

packages/devextreme-cli/testing/app-template.test.shared.js

@@ -81,6 +81,7 @@ module.exports = (env, { port, urls } = { port: '8080', urls: {} }) => {
                             const viewport = viewports[viewportName];
 
                             async function openPage(url, options) {
+                                await new Promise((resolve) => setTimeout(resolve, 500));
                                 await page.goto('about:blank');
                                 await page.setViewport(viewport);
                                 await page.goto(url, {