1 files changed, 32 insertions, 0 deletions
diff --git a/test/fetch/issue-2021.js b/test/fetch/issue-2021.js
new file mode 100644
index 0000000..cd28a71
--- /dev/null
+++ b/test/fetch/issue-2021.js
@@ -0,0 +1,32 @@
+'use strict'
+
+const { test } = require('tap')
+const { once } = require('events')
+const { createServer } = require('http')
+const { fetch } = require('../..')
+
+// https://github.com/nodejs/undici/issues/2021
+test('content-length header is removed on redirect', async (t) => {
+  const server = createServer((req, res) => {
+    if (req.url === '/redirect') {
+      res.writeHead(302, { Location: '/redirect2' })
+      res.end()
+      return
+    }
+
+    res.end()
+  }).listen(0).unref()
+
+  t.teardown(server.close.bind(server))
+  await once(server, 'listening')
+
+  const body = 'a+b+c'
+
+  await t.resolves(fetch(`http://localhost:${server.address().port}/redirect`, {
+    method: 'POST',
+    body,
+    headers: {
+      'content-length': Buffer.byteLength(body)
+    }
+  }))
+})