test: use Rstest as Rslib's test framework

.github/renovate.json5

@@ -66,8 +66,6 @@
     // umd tests need to lock this version
     'react-18',
     'react-dom-18',
-    // bundled dts tests need to lock this version
-    '@vitest/expect',
     // see https://github.com/web-infra-dev/rslib/pull/992
     '@ast-grep/napi',
   ],

.github/workflows/benchmark.yml

@@ -20,30 +20,34 @@ jobs:
         node-version: [20]
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
-        with:
-          fetch-depth: 10
-          ref: ${{ inputs.ref || 'main' }}
-
-      - name: Install pnpm
-        run: |
-          npm install -g corepack@latest --force
-          corepack enable
-
-      - name: Setup Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
-        with:
-          node-version: ${{ matrix.node-version }}
-          cache: 'pnpm'
-
-      - name: Install Dependencies
-        run: pnpm install && cd ./tests && pnpm playwright install chromium
-
-      # only run benchmark in Ubuntu
-      - name: Benchmarks (Vitest)
-        uses: CodSpeedHQ/action@0010eb0ca6e89b80c88e8edaaa07cfe5f3e6664d # v3
-        with:
-          run: pnpm run test:benchmark
-          # token retrieved from the CodSpeed app at the previous step
-          token: ${{ secrets.CODSPEED_TOKEN }}
+      # just a dummy step
+      - name: Dummy Step
+        run: echo "TODO:\ Support benchmark in Rstest, this job is only a placeholder for the time being."
+
+      # - name: Checkout
+      #   uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+      #   with:
+      #     fetch-depth: 10
+      #     ref: ${{ inputs.ref || 'main' }}
+
+      # - name: Install pnpm
+      #   run: |
+      #     npm install -g corepack@latest --force
+      #     corepack enable
+
+      # - name: Setup Node.js ${{ matrix.node-version }}
+      #   uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+      #   with:
+      #     node-version: ${{ matrix.node-version }}
+      #     cache: 'pnpm'
+
+      # - name: Install Dependencies
+      #   run: pnpm install && cd ./tests && pnpm playwright install chromium
+
+      # # only run benchmark in Ubuntu
+      # - name: Benchmarks (Rstest)
+      #   uses: CodSpeedHQ/action@0010eb0ca6e89b80c88e8edaaa07cfe5f3e6664d # v3
+      #   with:
+      #     run: pnpm run test:benchmark
+      #     # token retrieved from the CodSpeed app at the previous step
+      #     token: ${{ secrets.CODSPEED_TOKEN }}

.github/workflows/test.yml

@@ -121,7 +121,7 @@ jobs:
         if: steps.changes.outputs.changed == 'true'
         run: pnpm install && cd ./tests && pnpm playwright install chromium
 
-      - name: Integration Test (Vitest)
+      - name: Integration Test (Rstest)
         if: steps.changes.outputs.changed == 'true'
         run: pnpm run test:integration
 

.gitignore

@@ -25,4 +25,5 @@ test-results
 **/@mf-types
 **/@mf-types/**
 .env.local
-.env.*.local
+.env.*.local
+.rslib/**/*

CONTRIBUTING.md

@@ -72,7 +72,7 @@ npx nx build @rslib/core --watch
 
 If you've fixed a bug or added code that should be tested, then add some tests.
 
-You can add unit test cases in the `<PACKAGE_DIR>/tests` folder. The test runner is based on [Vitest](https://vitest.dev/).
+You can add unit test cases in the `<PACKAGE_DIR>/tests` folder. The test runner is based on [Rstest](https://rstest.rs/).
 
 ### Run unit tests
 

biome.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://biomejs.dev/schemas/2.0.5/schema.json",
+  "$schema": "https://biomejs.dev/schemas/2.0.6/schema.json",
   "assist": {
     "actions": {
       "source": {
@@ -46,6 +46,7 @@
     "includes": [
       "**",
       "!**/*.vue",
+      "!**/dist/**",
       "!**/.rslib/**/*",
       "!tests/integration/**/*/src/**/*",
       "!tests/e2e/react-component/public/umd/**/*"

examples/module-federation/mf-host/package.json

@@ -12,7 +12,7 @@
     "react-dom": "^19.1.0"
   },
   "devDependencies": {
-    "@module-federation/rsbuild-plugin": "^0.15.0",
+    "@module-federation/rsbuild-plugin": "^0.16.0",
     "@rsbuild/core": "~1.4.2",
     "@rsbuild/plugin-react": "^1.3.2",
     "@types/react": "^19.1.8",

examples/module-federation/mf-host/rsbuild.config.ts

@@ -5,22 +5,25 @@ import { pluginReact } from '@rsbuild/plugin-react';
 export default defineConfig({
   plugins: [
     pluginReact(),
-    pluginModuleFederation({
-      name: 'rsbuild_host',
-      remotes: {
-        rslib: 'rslib@http://localhost:3001/mf/mf-manifest.json',
-      },
-      shared: {
-        react: {
-          singleton: true,
+    pluginModuleFederation(
+      {
+        name: 'rsbuild_host',
+        remotes: {
+          rslib: 'rslib@http://localhost:3001/mf/mf-manifest.json',
         },
-        'react-dom': {
-          singleton: true,
+        shared: {
+          react: {
+            singleton: true,
+          },
+          'react-dom': {
+            singleton: true,
+          },
         },
+        // Enable this when the output of Rslib is build under 'production' mode, while the host app is 'development'.
+        // Reference: https://rslib.rs/guide/advanced/module-federation#faqs
+        shareStrategy: 'loaded-first',
       },
-      // Enable this when the output of Rslib is build under 'production' mode, while the host app is 'development'.
-      // Reference: https://rslib.rs/guide/advanced/module-federation#faqs
-      shareStrategy: 'loaded-first',
-    }),
+      {},
+    ),
   ],
 });

examples/module-federation/mf-react-component/package.json

@@ -18,8 +18,8 @@
     "storybook": "storybook dev -p 6006"
   },
   "devDependencies": {
-    "@module-federation/enhanced": "^0.15.0",
-    "@module-federation/rsbuild-plugin": "^0.15.0",
+    "@module-federation/enhanced": "^0.16.0",
+    "@module-federation/rsbuild-plugin": "^0.16.0",
     "@module-federation/storybook-addon": "^4.0.20",
     "@rsbuild/plugin-react": "^1.3.2",
     "@rslib/core": "workspace:*",

examples/module-federation/mf-react-component/rslib.config.ts

@@ -34,20 +34,23 @@ export default defineConfig({
         assetPrefix: 'http://localhost:3001/mf',
       },
       plugins: [
-        pluginModuleFederation({
-          name: 'rslib_provider',
-          exposes: {
-            '.': './src/index.tsx',
-          },
-          shared: {
-            react: {
-              singleton: true,
+        pluginModuleFederation(
+          {
+            name: 'rslib_provider',
+            exposes: {
+              '.': './src/index.tsx',
             },
-            'react-dom': {
-              singleton: true,
+            shared: {
+              react: {
+                singleton: true,
+              },
+              'react-dom': {
+                singleton: true,
+              },
             },
           },
-        }),
+          {},
+        ),
       ],
     },
   ],

examples/module-federation/mf-remote/package.json

@@ -12,7 +12,7 @@
     "react-dom": "^19.1.0"
   },
   "devDependencies": {
-    "@module-federation/rsbuild-plugin": "^0.15.0",
+    "@module-federation/rsbuild-plugin": "^0.16.0",
     "@rsbuild/core": "~1.4.2",
     "@rsbuild/plugin-react": "^1.3.2",
     "@types/react": "^19.1.8",

examples/module-federation/mf-remote/rsbuild.config.ts

@@ -5,20 +5,23 @@ import { pluginReact } from '@rsbuild/plugin-react';
 export default defineConfig({
   plugins: [
     pluginReact(),
-    pluginModuleFederation({
-      name: 'rsbuild_remote',
-      exposes: {
-        '.': './src/App.tsx',
-      },
-      shared: {
-        react: {
-          singleton: true,
+    pluginModuleFederation(
+      {
+        name: 'rsbuild_remote',
+        exposes: {
+          '.': './src/App.tsx',
         },
-        'react-dom': {
-          singleton: true,
+        shared: {
+          react: {
+            singleton: true,
+          },
+          'react-dom': {
+            singleton: true,
+          },
         },
       },
-    }),
+      {},
+    ),
   ],
   server: {
     port: 3002,

package.json

@@ -18,10 +18,8 @@
     "test:benchmark": "cd ./tests && pnpm run test:benchmark",
     "test:e2e": "pnpm run build:examples && cd tests && pnpm run test:e2e",
     "test:ecosystem-ci": "pnpm run test:unit && cross-env ECO_CI=1 pnpm run test:integration && pnpm run test:e2e",
-    "test:integration": "cross-env NODE_OPTIONS='--experimental-vm-modules' vitest run --project integration",
-    "test:integration:watch": "cross-env NODE_OPTIONS='--experimental-vm-modules' vitest --project integration",
-    "test:unit": "vitest run --project unit*",
-    "test:unit:watch": "vitest --project unit*",
+    "test:integration": "pnpm -r --filter \"./tests\" run test",
+    "test:unit": "pnpm -r --filter \"./packages/**\" run test",
     "testu": "pnpm run test:unit -u && pnpm run test:integration -u",
     "type-check": "pnpm -r run type-check",
     "update:rsbuild": "npx taze minor --include /rsbuild/ -w -r -l",
@@ -44,6 +42,7 @@
   "devDependencies": {
     "@biomejs/biome": "^2.0.6",
     "@changesets/cli": "^2.29.5",
+    "@rstest/core": "0.0.6",
     "@types/fs-extra": "^11.0.4",
     "@types/node": "^22.15.34",
     "check-dependency-version-consistency": "^5.0.1",
@@ -57,7 +56,6 @@
     "prettier-plugin-packagejson": "^2.5.17",
     "simple-git-hooks": "^2.13.0",
     "typescript": "^5.8.3",
-    "vitest": "^3.2.4",
     "zx": "^8.6.0"
   },
   "packageManager": "[email protected]",

packages/core/__mocks__/fs/promises.js

@@ -0,0 +1,2 @@
+import { promises } from 'memfs';
+export default promises;

packages/core/package.json

@@ -39,6 +39,7 @@
     "build": "rslib build",
     "dev": "rslib build --watch",
     "prebundle": "prebundle",
+    "test": "rstest run",
     "type-check": "tsc --noEmit && tsc --noEmit -p tests"
   },
   "dependencies": {
@@ -47,7 +48,7 @@
     "tinyglobby": "^0.2.14"
   },
   "devDependencies": {
-    "@module-federation/rsbuild-plugin": "^0.15.0",
+    "@module-federation/rsbuild-plugin": "^0.16.0",
     "@rslib/tsconfig": "workspace:*",
     "@types/fs-extra": "^11.0.4",
     "cac": "^6.7.14",

packages/core/rstest.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from '@rstest/core';
+import { shared } from '../../rstest.workspace';
+
+export default defineConfig({
+  ...shared,
+  name: 'unit',
+});

packages/core/tests/__snapshots__/config.test.ts.snap

@@ -1,4 +1,4 @@
-// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+// Rstest Snapshot v1
 
 exports[`Should compose create Rsbuild config correctly > Merge Rsbuild config in each format 1`] = `
 [
@@ -15,6 +15,16 @@ exports[`Should compose create Rsbuild config correctly > Merge Rsbuild config i
         },
         "externals": [
           [Function],
+          /\\^@rsbuild\\\\/core\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^rsbuild-plugin-dts\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^tinyglobby\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^@microsoft\\\\/api-extractor\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^typescript\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          "@rsbuild/core",
+          "rsbuild-plugin-dts",
+          "tinyglobby",
+          "@microsoft/api-extractor",
+          "typescript",
           "assert",
           "assert/strict",
           "async_hooks",
@@ -73,7 +83,7 @@ exports[`Should compose create Rsbuild config correctly > Merge Rsbuild config i
           "pnpapi",
         ],
         "filename": {
-          "js": "[name].mjs",
+          "js": "[name].js",
         },
         "filenameHash": false,
         "minify": {
@@ -275,6 +285,16 @@ exports[`Should compose create Rsbuild config correctly > Merge Rsbuild config i
           "jsAsync": "./",
         },
         "externals": [
+          /\\^@rsbuild\\\\/core\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^rsbuild-plugin-dts\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^tinyglobby\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^@microsoft\\\\/api-extractor\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          /\\^typescript\\(\\$\\|\\\\/\\|\\\\\\\\\\)/,
+          "@rsbuild/core",
+          "rsbuild-plugin-dts",
+          "tinyglobby",
+          "@microsoft/api-extractor",
+          "typescript",
           "assert",
           "assert/strict",
           "async_hooks",
@@ -333,7 +353,7 @@ exports[`Should compose create Rsbuild config correctly > Merge Rsbuild config i
           "pnpapi",
         ],
         "filename": {
-          "js": "[name].js",
+          "js": "[name].cjs",
         },
         "filenameHash": false,
         "minify": {

packages/core/tests/config.test.ts

@@ -1,14 +1,14 @@
 import { join } from 'node:path';
 import { pluginModuleFederation } from '@module-federation/rsbuild-plugin';
-import { describe, expect, test, vi } from 'vitest';
+import { describe, expect, rs, test } from '@rstest/core';
 import {
   composeCreateRsbuildConfig,
   composeRsbuildEnvironments,
   loadConfig,
 } from '../src/config';
 import type { RslibConfig } from '../src/types/config';
 
-vi.mock('rslog');
+rs.mock('rslog');
 
 describe('Should load config file correctly', () => {
   test('Load config.js in cjs project', async () => {
@@ -182,7 +182,7 @@ describe('Should compose create Rsbuild config correctly', () => {
         },
         {
           format: 'mf',
-          plugins: [pluginModuleFederation({})],
+          plugins: [pluginModuleFederation({}, {})],
         },
       ],
       source: {