test: migrate to Vitest inline projects

[AriPerkkio]

• Migrates Vitest config from old deprecated APIs to the new ones

Currently Vitest Ecosystem CI is failing for Vue. That's running 4.beta releases which removed these deprecated APIs. With these changes, Vue repo starts to pass with 4.beta.

https://github.com/vitest-dev/vitest-ecosystem-ci/actions/runs/15918783572/job/44901249704

Summary by CodeRabbit

• Chores
  • Updated test scripts and dependencies for improved compatibility and coverage.
  • Consolidated and restructured test configurations for unit and end-to-end tests into a single configuration file.
  • Removed obsolete test configuration files to simplify setup and maintenance.

[coderabbitai[bot]]

Walkthrough

The changes consolidate Vitest test configurations by deleting separate config files for unit and e2e tests and moving to a single, project-based configuration in vitest.config.ts. Test scripts and dependencies in package.json are updated, and the workspace config is removed. No exported or public entity declarations are altered.

Changes

File(s)	Change Summary
package.json	Updated test scripts to use glob patterns; upgraded @vitest/coverage-v8 and vitest dependencies.
vitest.config.ts	Replaced environment glob matching with a projects array for unit, unit-jsdom, and e2e test configs.
vitest.unit.config.ts, vitest.e2e.config.ts, vitest.workspace.ts	Deleted separate unit, e2e, and workspace Vitest config files.

Sequence Diagram(s)

sequenceDiagram
    participant Dev as Developer
    participant VitestConfig as vitest.config.ts
    participant Vitest as Vitest Runner

    Dev->>VitestConfig: Run test script (unit*, e2e)
    VitestConfig->>Vitest: Provide projects array (unit, unit-jsdom, e2e)
    Vitest->>Vitest: Select matching project config
    Vitest->>Dev: Execute tests with appropriate environment/settings

Poem

In the warren, configs once sprawled, Now a single burrow—neatly installed! With scripts that match and versions new, The tests all run, both old and true. Goodbye, confusion—hello, delight! The code hops forward, clean and light. 🐇✨

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between ba391f5fdf5d84bfacaca6a2a3e7057fc99efa34 and 98f70ad0e2f74221b2e5b98261499310205caa37.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (5)

• package.json (3 hunks)
• vitest.config.ts (2 hunks)
• vitest.e2e.config.ts (0 hunks)
• vitest.unit.config.ts (0 hunks)
• vitest.workspace.ts (0 hunks)

💤 Files with no reviewable changes (3)

• vitest.workspace.ts
• vitest.unit.config.ts
• vitest.e2e.config.ts

⏰ Context from checks skipped due to timeout of 90000ms (3)

• GitHub Check: Redirect rules
• GitHub Check: Header rules
• GitHub Check: Pages changed

🔇 Additional comments (4)

package.json (2)

20-20: LGTM! Script updates align with new project structure.

The glob pattern unit* correctly targets both "unit" and "unit-jsdom" projects defined in the new Vitest configuration, replacing the previous fixed project names.

Also applies to: 24-24

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77-77: Dependency upgrades support new Vitest features.

The version bumps to ^3.2.4 for both vitest and @vitest/coverage-v8 are necessary to support the new inline projects configuration introduced in this migration.

Also applies to: 113-113

vitest.config.ts (2)

1-1: Necessary import for new project configuration.

The addition of configDefaults import is required to access default exclude patterns in the new project-based configuration.

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49-84: Old Vitest Configs Fully Removed

Verification shows there are no leftover Vitest config files or references to the old split configs. The only remaining import is the new vitest.config.ts:

• No files matching vitest.(unit|e2e|workspace).config.(ts|js)
• No vitest.*config entries in package.json or elsewhere
• Only vitest.config.ts remains, as expected

✨ Finishing Touches

• [ ] 📝 Generate Docstrings

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[edison1105]

Thanks for this PR. but we already made these changes in the vapor branch (will be merge into main soon) see https://github.com/vuejs/core/commit/cd93dad4d97971d30e89924387c2378e8bc43c70

[AriPerkkio]

Perfect, thanks! Also make sure to replace the workspace config option with projects. It requires Vitest ^3.2. The 4.beta removes workspace option compeltely.

[AriPerkkio]

@edison1105 I've rebased latest main to this branch and it's ready to go. Are you able to re-open this PR? Github doesn't allow me to do that. If not, I'll open a new PR with this branch.

These changes make Vue pass with [email protected]. The beta.6 introduces breaking changes to module mocking and require actual test code changes.

[edison1105]

@AriPerkkio Please open a new one.