test: finish all webpack test migration

[IWANABETHATGUY]

Summary

This pr dependends these two pull request:

1. test: finish *.test.js and *.basictest.js #2706
2. test: long test.js #2708

Our target is run these four kinds of tests:

      "<rootDir>/test/*.test.js",
      "<rootDir>/test/*.basictest.js",
      "<rootDir>/test/*.longtest.js",
      "<rootDir>/test/*.unittest.js"

This pr finishes:

 "<rootDir>/test/*.unittest.js"

Here is a result after run pnpm --filter webpack-test test

Related issue (if exists)

Closed #2496

Types of changes

• Docs change / Dependency upgrade
• Bug fix
• New feature / Improvement
• Refactoring
• Breaking change

Checklist

• I have added changeset via pnpm run changeset.
• I have added tests to cover my changes.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3a206db

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR