From 9ec12487168a70b16d7e4042de2e956916eea9a0 Mon Sep 17 00:00:00 2001
From: Wojciech Maj <kontakt@wojtekmaj.pl>
Date: Mon, 30 Oct 2023 09:38:39 +0100
Subject: [PATCH] ci: add `vitest` e2e tests (#5896)

**What's the problem this PR addresses?**

Vitest is increasingly important tool in JS ecosystem. While nowhere
near "industry standard", it's [quickly gaining
traction](https://npmtrends.com/vitest).

...

**How did you fix it?**

Copy Jest's E2E and "migrate" it to Vitest.
...

**Checklist**
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- [ ] I have read the [Contributing
Guide](https://yarnpkg.com/advanced/contributing).

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for more details. -->
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- [ ] I have set the packages that need to be released for my changes to
be effective.

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reviewed.
---
 .github/workflows/e2e-vitest-workflow.yml | 40 +++++++++++++++++++++++
 README.md                                 |  1 +
 2 files changed, 41 insertions(+)
 create mode 100644 .github/workflows/e2e-vitest-workflow.yml

diff --git a/.github/workflows/e2e-vitest-workflow.yml b/.github/workflows/e2e-vitest-workflow.yml
new file mode 100644
index 000000000000..26ebb2d238cb
--- /dev/null
+++ b/.github/workflows/e2e-vitest-workflow.yml
@@ -0,0 +1,40 @@
+on:
+  schedule:
+  - cron: '0 */4 * * *'
+  push:
+    branches:
+    - master
+  pull_request:
+    paths:
+    - .github/actions/prepare/action.yml
+    - .github/workflows/e2e-vitest-workflow.yml
+    - scripts/e2e-setup-ci.sh
+
+name: 'E2E Vitest'
+jobs:
+  chore:
+    name: 'Validating Vitest'
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - uses: ./.github/actions/prepare
+
+    - name: 'Running the integration test'
+      run: |
+        source scripts/e2e-setup-ci.sh
+
+        yarn init -p
+        yarn add vitest
+
+        echo "import { it, expect } from 'vitest'; it('should pass', () => { expect(true).toBeTruthy(); });" | tee pass.test.js
+        yarn vitest run pass.test.js
+
+        echo "import { it, expect } from 'vitest'; it('should fail', () => { expect(false).toBeTruthy(); });" | tee fail.test.js
+        ! yarn vitest run fail.test.js
+
+        yarn add left-pad
+
+        echo "import { it, expect } from 'vitest'; import leftPad from 'left-pad'; it('should resolve a module', () => { expect(typeof leftPad).toBe('function');});" | tee module.test.js
+        yarn vitest run module.test.js
diff --git a/README.md b/README.md
index e2e421af34bc..ebbad8d9557e 100644
--- a/README.md
+++ b/README.md
@@ -161,6 +161,7 @@ On top of our classic integration tests, we also run Yarn every day against the
 [![](https://github.com/yarnpkg/berry/actions/workflows/e2e-rollup-workflow.yml/badge.svg?event=schedule)](https://github.com/yarnpkg/berry/actions/workflows/e2e-rollup-workflow.yml)<br/>
 [![](https://github.com/yarnpkg/berry/actions/workflows/e2e-storybook-workflow.yml/badge.svg?event=schedule)](https://github.com/yarnpkg/berry/actions/workflows/e2e-storybook-workflow.yml)<br/>
 [![](https://github.com/yarnpkg/berry/actions/workflows/e2e-typescript-workflow.yml/badge.svg?event=schedule)](https://github.com/yarnpkg/berry/actions/workflows/e2e-typescript-workflow.yml)<br/>
+[![](https://github.com/yarnpkg/berry/actions/workflows/e2e-vitest-workflow.yml/badge.svg?event=schedule)](https://github.com/yarnpkg/berry/actions/workflows/e2e-vitest-workflow.yml)<br/>
 [![](https://github.com/yarnpkg/berry/actions/workflows/e2e-webpack-workflow.yml/badge.svg?event=schedule)](https://github.com/yarnpkg/berry/actions/workflows/e2e-webpack-workflow.yml)<br/>
 </td></tr>