fix(adapter): handle Playwright & Stencil configs in different dirs

[tanner-reits]

What is the current behavior?

The adapter only expects the Stencil config and Playwright config to be sibling files. This prevents tests from working with architectures that might have tests and test-related files in a sub-directory

GitHub Issue Number: N/A

What is the new behavior?

Replaces glob with find-up to search for the Stencil config file in the current and all ancestor directories. This way tests can live and be executed in architectures that might place the Playwright config at a lower directory level.

Documentation

N/A

Does this introduce a breaking change?

• Yes
• No

Testing

Updated automated tests.

Tested new behavior in a Stencil component starter in a few ways:

1. Moving the Playwright test files and config file to a nested tests dir (i.e. like src/tests). Then cd to this dir, and run npx playwright test.
2. Moving the Playwright test files and config file to a nested tests dir (i.e. like src/tests). From the root of the project, run npx playwright test -c <path_to_playwright_config>
3. Moving the Playwright test files and config file to a nested tests dir (i.e. like src/tests). Then cd to a directory lower than the test directory (i.e. cd src/tests/sub-dir) and run npx playwright test -c ../playwright.config.ts

Other information

[christian-bromann]

While the name stencil.config.ts is what we use in almost all examples, it would be technically possible to to name the config file differently which would cause confusion. Should we note this limitation in the README.md and clearly state that Stencil config files must follow this name pattern?

[rwaskiewicz]

FWIW, I think either is of those 2 options is acceptable here 👍

[tanner-reits]

I'll list this as a limitation in the readme & docs for now. Only other solutions that come to mind would be:

• A CLI for the adapter that would allow you to specify a path to the Stencil config and invoke the Playwright CLI under the hood
• A process.env variable for the Stencil config path.

I think both of those are a bit overkill/out-of-scope for now, though.

[tanner-reits]

@rwaskiewicz @christian-bromann Gonna update the readme/docs separately from this. Turns out the readme didn't get the setup instruction updates I made on the docs before we released so I'm just gonna take care of all that together.