Playwright integration

[Velenir]

As an alternative to cypress integration testing
PROs of playwright:

• Can be used with jest
• Doesn't pollute global types namespace (Chai expect)
• Properly awaits browser actions (cypress retries with a timeout)
• Simpler setup without scroll hackarounds
• Record actions capabilities (try yarn playwright:record)

CONs (can't speak to the specifics, not much experience with cypress):

• Less of an all-included solution

[gnosis-info]

Travis automatic deployment:

• 🎩 Dapp: Testing web app
• 📚 Storybook: Component stories

[anxolin]

How easy would be to do a web3 integration? I guess something like Uniswap has for cypress, I believe they just inject a global ethereum object in the window implementing Eip1193

One thing I might do different would be, I think they use Rinkeby for the tests. Maybe for us is good too, however might be too slow for testing in develop, also harder to do repeatable test.

Although in a purist Integration test, is not too good to use a mocked thing, we could consider using Ganache CLI TestRPC

what do you think?

[anxolin]

Maybe u can create one test:integration script to be used by travis. Even if it's just "npm run playwrite"

With #1630 we won't have that script anymore