rewrite RDS homepage tests using expect-puppeteer

[whyDontI]

https://www.npmjs.com/package/expect-puppeteer

Why do we need it

Writing integration test is very hard, especially when you are testing a Single Page Applications. Data are loaded asynchronously and it is difficult to know exactly when an element will be displayed in the page.

Puppeteer API is great, but it is low level and not designed for integration testing.

This API is designed for integration testing:

• It will wait for element before running an action
• It adds additional feature like matching an element using text

Refactor tests for RDS homepage

[rajat-mehra05]

Sounds good. I don't have any knowledge of testing yet. Can I still take this issue ? I am willing to learn the testing though. This looks good to start with.

[whyDontI]

@rajat-mehra05 We need to write E2E tests for all the pages across multiple applications.
You can work on them. I am creating some in a minute.

[whyDontI]

@priyanshk20 Can we quickly have a PR with expect-puppeteer added, and write tests in a separate PR so that others can start working on it ASAP.

[priyanshk20]

Sure, I will be doing this ASAP.