[Repo Assist] test: add unit tests for PHPCBF.findFiles config-search logic

[github-actions]

🤖 This is an automated draft PR from Repo Assist, an AI assistant.

Summary

Replaces the placeholder "Something 1" test with six meaningful unit tests for PHPCBF.findFiles() — the core method behind the phpcbf.configSearch feature.

Also exports the PHPCBF class from extension.js so it can be imported in the test suite.

Tests Added (test/extension.test.js)

Test	What it checks
finds config file in the same directory	Basic discovery when config sits next to the PHP file
finds config file in a parent directory (walks up)	The walk-up traversal that makes configSearch useful
returns null when no config file exists anywhere	Graceful fallback when nothing is found
returns the first matching file when multiple names given	Priority order of config file name candidates
prefers a closer (deeper) config file over a parent one	Correct scoping in nested projects
does not search above the workspace root	Prevents leaking into OS-level directories

Each test uses a fresh fs.mkdtempSync directory (created in setup, cleaned up in teardown) so tests are isolated and side-effect-free.

Why findFiles is the right target

• It is pure filesystem logic — no VS Code UI or editor state needed, so tests run reliably in the extension host
• It is non-trivial (path walking with multiple filename candidates, parent-stop boundary) and lacked any test coverage
• Bugs here would silently break phpcbf.configSearch for all users

Test Status

These tests require the VS Code extension host (vscode/lib/testrunner) to run. The findFiles logic itself was manually verified with Node.js to confirm all six assertions hold before opening this PR. Infrastructure (no VS Code in CI) prevents automated test execution.

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[github-actions]

🤖 This is an automated note from Repo Assist.

This PR has been superseded by changes that landed on master via PR #66. Specifically:

• findFiles was extracted from the PHPCBF class into the standalone lib/utils.js module, so the approach of exporting PHPCBF to test phpcbf.findFiles() is no longer valid.
• The unit tests for findFiles that this PR aimed to add are now in test/unit.test.js (introduced in PR [Repo Assist] test: add unit tests for findFiles and improve extension test suite #66), exercising the utility directly via require("../lib/utils").

As a result, merging this PR as-is would conflict with test/extension.test.js and introduce a stale export to extension.js.

I'd suggest closing this PR — the testing goal it set out to achieve is already covered on master. Thank you for the intent behind it!

Generated by Repo Assist · ◷

To install this agentic workflow, run

gh aw add githubnext/agentics/workflows/repo-assist.md@346204513ecfa08b81566450d7d599556807389f