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2.3 KiB
2.3 KiB
Verification
Screenshots
// Save to file
await page.screenshot({path: 'screenshot.png'});
// Capture full page
await page.screenshot({path: 'screenshot.png', fullPage: true});
// Capture into buffer
const buffer = await page.screenshot();
console.log(buffer.toString('base64'));
// Capture given element
const elementHandle = await page.$('.header');
await elementHandle.screenshot({ path: 'screenshot.png' });
API reference
Console logs
You can listen for various events on the page object. Following are just some of the examples of the events you can assert and handle:
"console" - get all console messages from the page
page.on('console', msg => {
// Handle only errors.
if (msg.type() !== 'error')
return;
console.log(`text: "${msg.text()}"`);
});
API reference
Page errors
Listen for uncaught exceptions in the page with the pagerror event.
// Log all uncaught errors to the terminal
page.on('pageerror', exception => {
console.log(`Uncaught exception: "${exception}"`);
});
// Navigate to a page with an exception.
await page.goto('data:text/html,<script>throw new Error("Test")</script>');
API reference
Page events
"requestfailed"
page.on('requestfailed', request => {
console.log(request.url() + ' ' + request.failure().errorText);
});
"dialog" - handle alert, confirm, prompt
page.on('dialog', dialog => {
dialog.accept();
});
"popup" - handle popup windows
const [popup] = await Promise.all([
page.waitForEvent('popup'),
page.click('#open')
]);