fixup

test/issue-2065.js

@@ -4,6 +4,7 @@ const { tspl } = require('@matteo.collina/tspl')
 const { test, after } = require('node:test')
 const { createServer } = require('node:http')
 const { once } = require('node:events')
+const { openAsBlob } = require('node:fs')
 const { File, FormData, request } = require('..')
 
 test('undici.request with a FormData body should set content-length header', async (t) => {
@@ -25,3 +26,21 @@ test('undici.request with a FormData body should set content-length header', asy
     body
   })
 })
+
+test('undici.request with a FormData stream value should set transfer-encoding header', { skip: !openAsBlob }, async (t) => {
+  const server = createServer((req, res) => {
+    t.ok(req.headers['content-type'].startsWith('multipart/form-data'))
+    res.end()
+  }).listen(0)
+
+  t.teardown(server.close.bind(server))
+  await once(server, 'listening')
+
+  const body = new FormData()
+  body.set('file', await openAsBlob(__filename), 'streamfile')
+
+  await request(`http://localhost:${server.address().port}`, {
+    method: 'POST',
+    body
+  })
+})