1 files changed, 32 insertions, 0 deletions
diff --git a/test/fetch/user-agent.js b/test/fetch/user-agent.js
new file mode 100644
index 0000000..2e37ea5
--- /dev/null
+++ b/test/fetch/user-agent.js
@@ -0,0 +1,32 @@
+'use strict'
+
+const { test, skip } = require('tap')
+const events = require('events')
+const http = require('http')
+const undici = require('../../')
+const { nodeMajor } = require('../../lib/core/util')
+
+if (nodeMajor === 16) {
+  skip('esbuild uses static blocks with --keep-names which node 16.8 does not have')
+  process.exit()
+}
+
+const nodeBuild = require('../../undici-fetch.js')
+
+test('user-agent defaults correctly', async (t) => {
+  const server = http.createServer((req, res) => {
+    res.end(JSON.stringify({ userAgentHeader: req.headers['user-agent'] }))
+  })
+  t.teardown(server.close.bind(server))
+
+  server.listen(0)
+  await events.once(server, 'listening')
+  const url = `http://localhost:${server.address().port}`
+  const [nodeBuildJSON, undiciJSON] = await Promise.all([
+    nodeBuild.fetch(url).then((body) => body.json()),
+    undici.fetch(url).then((body) => body.json())
+  ])
+
+  t.same(nodeBuildJSON.userAgentHeader, 'node')
+  t.same(undiciJSON.userAgentHeader, 'undici')
+})