cli: Rewrite test command

[anomiex]

Proposed changes:

Bring in a few new features:

• Ability to specify multiple projects to test, which will be run in parallel if --verbose is not used.
• Correct handling of tests that use ARTIFACTS_DIR.
• Correct handling of coverage tests, without having to manually set COVERAGE_DIR.
• Coverage tests now generate an HTML report by default.

Unfortunately, there are some breaking changes here:

• The order of the "test" and "project" arguments has changed.
• By default the output from PHPUnit or jest will no longer be shown. Run with --verbose if you want to see it.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

None to link. In our last Garage meeting we talked about having a way to run coverage tests locally to generate an HTML report, this is what I came up with.

Does this pull request change what data or activity we track or use?

No

Testing instructions:

• Try it out! Arrange for some tests to fail and try that too.

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the update/cli-test-command branch.

  • For jetpack-mu-wpcom changes, also add define( 'JETPACK_MU_WPCOM_LOAD_VIA_BETA_PLUGIN', true ); to your wp-config.php file.

• To test on Simple, run the following command on your sandbox:

  bin/jetpack-downloader test jetpack update/cli-test-command
  

  bin/jetpack-downloader test jetpack-mu-wpcom-plugin update/cli-test-command
  

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

• ✅ Include a description of your PR changes.
  
• ✅ Add a "[Status]" label (In Progress, Needs Team Review, ...).
  
• ✅ Add testing instructions.
  
• ✅ Specify whether this PR includes any changes to data or privacy.
  
• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

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The e2e test report can be found here. Please note that it can take a few minutes after the e2e tests checks are complete for the report to be available.

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Follow this PR Review Process:

1. Ensure all required checks appearing at the bottom of this PR are passing.
2. Choose a review path based on your changes:
   • A. Team Review: add the "[Status] Needs Team Review" label
     • For most changes, including minor cross-team impacts.
     • Example: Updating a team-specific component or a small change to a shared library.
   • B. Crew Review: add the "[Status] Needs Review" label
     • For significant changes to core functionality.
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     • Example: Refactor affecting multiple systems.
3. Get at least one approval before merging.

Still unsure? Reach out in #jetpack-developers for guidance!

[tbradsha]

After a few hiccups from my end, this seems to run as expected:

The following runs were successful:

• Standard run: jetpack test coverage packages/codesniffer
• Parallel run: jetpack test coverage packages/codesniffer packages/autoloader
• Custom HTML dir: jetpack test coverage packages/codesniffer --html-dir=random_dir
• Custom Artifacts dir: jetpack test coverage plugins/crm --artifacts-dir=random_dir