From 2a9fbeeda9d5cf447096eae745e71e4d63934d70 Mon Sep 17 00:00:00 2001
From: Daniel Kennedy <danwkennedy@github.com>
Date: Tue, 24 Feb 2026 12:29:14 -0500
Subject: [PATCH] Add some more stream tests and handle an upload failure
 gracefully

---
 packages/artifact/__tests__/stream.test.ts    | 67 +++++++++++++++++++
 .../artifact/src/internal/upload/stream.ts    |  4 +-
 2 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 packages/artifact/__tests__/stream.test.ts

diff --git a/packages/artifact/__tests__/stream.test.ts b/packages/artifact/__tests__/stream.test.ts
new file mode 100644
index 00000000..a5a6c417
--- /dev/null
+++ b/packages/artifact/__tests__/stream.test.ts
@@ -0,0 +1,67 @@
+import * as fs from 'fs'
+import * as path from 'path'
+import {createRawFileUploadStream} from '../src/internal/upload/stream.js'
+import {noopLogs} from './common.js'
+
+const fixtures = {
+  testDirectory: path.join(__dirname, '_temp', 'stream-test'),
+  testFile: path.join(__dirname, '_temp', 'stream-test', 'test-file.txt'),
+  testContent: 'hello stream test'
+}
+
+describe('createRawFileUploadStream', () => {
+  beforeAll(() => {
+    fs.mkdirSync(fixtures.testDirectory, {recursive: true})
+    fs.writeFileSync(fixtures.testFile, fixtures.testContent)
+  })
+
+  beforeEach(() => {
+    noopLogs()
+  })
+
+  afterEach(() => {
+    jest.restoreAllMocks()
+  })
+
+  it('should stream file contents through the upload stream', async () => {
+    const uploadStream = await createRawFileUploadStream(fixtures.testFile)
+
+    const chunks: Buffer[] = []
+    const result = await new Promise<string>((resolve, reject) => {
+      uploadStream.on('data', chunk => chunks.push(Buffer.from(chunk)))
+      uploadStream.on('end', () =>
+        resolve(Buffer.concat(chunks).toString('utf-8'))
+      )
+      uploadStream.on('error', reject)
+    })
+
+    expect(result).toBe(fixtures.testContent)
+  })
+
+  it('should propagate file read errors through the upload stream', async () => {
+    const unreadableFile = path.join(
+      fixtures.testDirectory,
+      'unreadable.txt'
+    )
+    fs.writeFileSync(unreadableFile, 'secret')
+    fs.chmodSync(unreadableFile, 0o000)
+
+    const uploadStream = await createRawFileUploadStream(unreadableFile)
+
+    try {
+      await expect(
+        new Promise((resolve, reject) => {
+          uploadStream.on('data', resolve)
+          uploadStream.on('end', resolve)
+          uploadStream.on('error', reject)
+        })
+      ).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)
+    }
+  })
+})
diff --git a/packages/artifact/src/internal/upload/stream.ts b/packages/artifact/src/internal/upload/stream.ts
index 8563f0be..f3b228b6 100644
--- a/packages/artifact/src/internal/upload/stream.ts
+++ b/packages/artifact/src/internal/upload/stream.ts
@@ -42,7 +42,9 @@ export async function createRawFileUploadStream(
   fileStream.on('error', error => {
     core.error('An error has occurred while reading the file for upload')
     core.info(String(error))
-    throw new Error('An error has occurred during file read for the artifact')
+    uploadStream.destroy(
+      new Error('An error has occurred during file read for the artifact')
+    )
   })
 
   fileStream.pipe(uploadStream)