Build/Test Tools: Add end-to-end (e2e) tests README.md.

Adds a readme to the `/tests/e2e/` folder to provide (a) instructions of how to run the tests locally and (b) links to documentation.

Follow-up to [45570].

Props isabel_brison, desrosj, justinahinon.
Fixes #53550.

git-svn-id: https://develop.svn.wordpress.org/trunk@51904 602fd350-edb4-49c9-b593-d223f7449a82
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Tonya Mork 2021-10-12 18:50:34 +00:00
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# E2E Tests End-To-End (E2E) tests for WordPress. ## Running the tests The e2e tests require a production-like environment to run. By default, they will assume an environment is available at `http://localhost:8889`, with username=admin and password=password. If you don't already have an environment ready, you can set one up by following [these instructions](https://github.com/WordPress/wordpress-develop/blob/master/README.md). Then you can launch the tests by running: ``` npm run test:e2e ``` which will run the test suite using a headless browser. If your environment has a different url, username or password to the default, you can provide the base URL, username and password like this: ``` npm run test:e2e -- --wordpress-base-url=http://mycustomurl --wordpress-username=username --wordpress-password=password ``` **DO NOT run these tests in an actual production environment, as they will delete all your content.** For debugging purposes, you might want to follow the test visually. You can do so by running the tests in an interactive mode. ``` npm run test:e2e -- --puppeteer-interactive ``` You can also run a single test file separately: ``` npm run test:e2e tests/e2e/specs/hello.test.js ``` ## Documentation * Block Editor Handbook end to end testing overview: https://developer.wordpress.org/block-editor/contributors/code/testing-overview/#end-to-end-testing * Gutenberg e2e-test-utils package API docs: https://github.com/WordPress/gutenberg/tree/trunk/packages/e2e-test-utils * Puppeteer API docs: https://github.com/puppeteer/puppeteer#readme (the version we are using is indicated in the @wordpress/scripts package: https://github.com/WordPress/gutenberg/blob/trunk/packages/scripts/package.json)