Fix Windows tests

packages/artifact/__tests__/stream.test.ts

@@ -39,13 +39,15 @@ describe('createRawFileUploadStream', () => {
   })
 
   it('should propagate file read errors through the upload stream', async () => {
-    const unreadableFile = path.join(fixtures.testDirectory, 'unreadable.txt')
+    // Use a directory path — createReadStream on a directory fails cross-platform
-    fs.writeFileSync(unreadableFile, 'secret')
+    // Mock lstat to return a non-symlink result so we reach createReadStream
-    fs.chmodSync(unreadableFile, 0o000)
+    const dirPath = fixtures.testDirectory
+    jest
+      .spyOn(fs.promises, 'lstat')
+      .mockResolvedValue({isSymbolicLink: () => false} as fs.Stats)
 
-    const uploadStream = await createRawFileUploadStream(unreadableFile)
+    const uploadStream = await createRawFileUploadStream(dirPath)
 
-    try {
     await expect(
       new Promise((resolve, reject) => {
         uploadStream.on('data', resolve)
@@ -55,10 +57,5 @@ describe('createRawFileUploadStream', () => {
     ).rejects.toThrow(
       'An error has occurred during file read for the artifact'
     )
-    } finally {
-      // Restore permissions so cleanup can delete the file
-      fs.chmodSync(unreadableFile, 0o644)
-      fs.unlinkSync(unreadableFile)
-    }
   })
 })