Merge pull request #982 from crazy-max/vitest

switch from Jest to Vitest

Author: crazy-max

.github/workflows/test.yml

@@ -48,7 +48,7 @@ jobs:
       -
         name: Check coverage
         run: |
-          if [ -f ./coverage/clover.xml ] && [ ! -f ./coverage/allSkipped.txt ]; then
+          if [ -f ./coverage/clover.xml ]; then
             echo "RUN_CODECOV=true" >> $GITHUB_ENV
           else
             echo "RUN_CODECOV=false" >> $GITHUB_ENV
@@ -206,7 +206,7 @@ jobs:
             if (testName) {
               args.push(`--testNamePattern=^${testName} `);
             }
-            args.push(`--runTestsByPath`, `__tests__/${{ matrix.test }}`, `--coverageDirectory=./coverage`);
+            args.push(`__tests__/${{ matrix.test }}`, `--coverage.reportsDirectory=./coverage`);
             await exec.exec('yarn', args);
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -218,7 +218,7 @@ jobs:
       -
         name: Check coverage
         run: |
-          if [ -f ./coverage/clover.xml ] && [ ! -f ./coverage/allSkipped.txt ]; then
+          if [ -f ./coverage/clover.xml ]; then
             echo "RUN_CODECOV=true" >> $GITHUB_ENV
           else
             echo "RUN_CODECOV=false" >> $GITHUB_ENV

.gitignore

@@ -38,13 +38,6 @@ jspm_packages/
 # Yarn Integrity file
 .yarn-integrity
 
-# dotenv environment variable files
-.env
-.env.development.local
-.env.test.local
-.env.production.local
-.env.local
-
 # yarn v2
 .yarn/cache
 .yarn/unplugged

__mocks__/@actions/github.ts

@@ -14,17 +14,17 @@
  * limitations under the License.
  */
 
-import {jest} from '@jest/globals';
+import {vi} from 'vitest';
 import os from 'os';
 
 export const mockPlatform = (platform: NodeJS.Platform) => {
-  return jest.spyOn(os, 'platform').mockImplementation(() => platform);
+  return vi.spyOn(os, 'platform').mockImplementation(() => platform);
 };
 
 export const mockArch = (arch: string) => {
-  return jest.spyOn(os, 'arch').mockImplementation(() => arch);
+  return vi.spyOn(os, 'arch').mockImplementation(() => arch);
 };
 
 export const mockHomedir = (dir: string) => {
-  return jest.spyOn(os, 'homedir').mockImplementation(() => dir);
+  return vi.spyOn(os, 'homedir').mockImplementation(() => dir);
 };

__tests__/.helpers/os.ts

@@ -0,0 +1,38 @@
+/**
+ * Copyright 2026 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import fs from 'node:fs';
+import path from 'node:path';
+
+const testsRoot = path.resolve('__tests__');
+const results = [];
+
+const walk = dir => {
+  for (const entry of fs.readdirSync(dir, {withFileTypes: true})) {
+    const fullPath = path.join(dir, entry.name);
+    if (entry.isDirectory()) {
+      walk(fullPath);
+      continue;
+    }
+    if (entry.isFile() && entry.name.endsWith('.test.itg.ts')) {
+      results.push(fullPath.replaceAll(path.sep, '/'));
+    }
+  }
+};
+
+walk(testsRoot);
+results.sort((a, b) => a.localeCompare(b));
+process.stdout.write(`${results.join('\n')}\n`);