1 files changed, 58 insertions, 0 deletions
diff --git a/test/fetch/encoding.js b/test/fetch/encoding.js
new file mode 100644
index 0000000..75d8fc3
--- /dev/null
+++ b/test/fetch/encoding.js
@@ -0,0 +1,58 @@
+'use strict'
+
+const { test } = require('tap')
+const { createServer } = require('http')
+const { once } = require('events')
+const { fetch } = require('../..')
+const { createBrotliCompress, createGzip, createDeflate } = require('zlib')
+
+test('content-encoding header is case-iNsENsITIve', async (t) => {
+  const contentCodings = 'GZiP, bR'
+  const text = 'Hello, World!'
+
+  const server = createServer((req, res) => {
+    const gzip = createGzip()
+    const brotli = createBrotliCompress()
+
+    res.setHeader('Content-Encoding', contentCodings)
+    res.setHeader('Content-Type', 'text/plain')
+
+    brotli.pipe(gzip).pipe(res)
+
+    brotli.write(text)
+    brotli.end()
+  }).listen(0)
+
+  t.teardown(server.close.bind(server))
+  await once(server, 'listening')
+
+  const response = await fetch(`http://localhost:${server.address().port}`)
+
+  t.equal(await response.text(), text)
+  t.equal(response.headers.get('content-encoding'), contentCodings)
+})
+
+test('response decompression according to content-encoding should be handled in a correct order', async (t) => {
+  const contentCodings = 'deflate, gzip'
+  const text = 'Hello, World!'
+
+  const server = createServer((req, res) => {
+    const gzip = createGzip()
+    const deflate = createDeflate()
+
+    res.setHeader('Content-Encoding', contentCodings)
+    res.setHeader('Content-Type', 'text/plain')
+
+    gzip.pipe(deflate).pipe(res)
+
+    gzip.write(text)
+    gzip.end()
+  }).listen(0)
+
+  t.teardown(server.close.bind(server))
+  await once(server, 'listening')
+
+  const response = await fetch(`http://localhost:${server.address().port}`)
+
+  t.equal(await response.text(), text)
+})