Implement page.on('response')

[ankur22]

Feature Description

When the browser module navigates to a website, the browser (Chrome etc.) will perform further requests to retrieve dependencies such as js files, images, css files and so on. With page.goto, the response that is returned to the caller is for the initial navigation to the the website. This response object doesn't contain any response details for the dependency requests that are made after the initial navigation.

A response of the dependencies is useful so that fine grained checks can be made:

1. Ensure that certain important dependencies are retrieved;
2. Ensure that certain dependencies aren't retrieved;
3. Ensure that the status code match the expected value;
4. Assert certain details within the payload body;
5. Dynamically assert on several dependencies depending on what has already been retrieved.
6. etc.

Thresholds can be used for this too, but having something inline with the code feels like it could be beneficial since programmatic actions can be taken when dependency responses are retrieved or aren't retrieved.

Suggested Solution (optional)

• https://playwright.dev/docs/api/class-page#page-event-response

Already existing or connected issues / PRs (optional)

#1227