How do I use Playwright to filter network responses based on a specific string during testing?


Sure, you can filter network responses based on a specific string during your tests with Playwright. This is done using the page.waitForResponse() method.

This method accepts a predicate function as an argument. The function receives a Response object, allowing you to set conditions for filtering responses. You can check properties of the response, like the URL or headers, to see if they contain the string you're looking for.

Here's a quick example:

const responsePromise = page.waitForResponse(response => response.url().includes('ray.run'));
await page.getByText('Update').click();
const response = await responsePromise;

In this code, we're waiting for a response with a URL that contains 'ray.run'. When we get the response, it's stored in the response variable for further use.

This technique lets you filter requests/responses based on specific criteria. It's a great way to monitor and handle network traffic in a more detailed way during your tests.

Remember, this is just one example. There may be other scenarios or variations that this doesn't cover. If you need more details or have other questions, don't hesitate to ask.


Thank you!
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Rayrun is a community for QA engineers. I am constantly looking for new ways to add value to people learning Playwright and other browser automation frameworks. If you have feedback, email luc@ray.run.