added test to check for console errors, decreased playwright timeout to make it fail faster

Author: ma4nn

playwright.config.ts

@@ -21,6 +21,7 @@ export default defineConfig({
   workers: process.env.CI ? 1 : undefined,
   /* Reporter to use. See https://playwright.dev/docs/test-reporters */
   reporter: 'html',
+  timeout: 10_000,
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
   use: {
     baseURL: 'http://127.0.0.1:8080',

tests/chart.spec.ts

@@ -58,6 +58,18 @@ test.beforeEach(async ({ page }) => {
     await page.goto('/');
 });
 
+test('no console errors during page load', async ({ page }) => {
+  const errors = [];
+
+  page.on('pageerror', error => {
+    errors.push(error.message);
+  });
+
+  await page.goto('/');
+
+  expect(errors).toEqual([]);
+});
+
 test('take screenshot', async ({ page }) => {
     await page.evaluate(() => document.querySelectorAll('header').forEach(header => header.remove()));
     await page.locator('#chart-container').screenshot({ path: 'tmp/sample.png' }); // take a screenshot for README file