test(node-fetch): add test cases for zstandard decompression support

Author: J3m5

test/node-fetch/main.js

@@ -670,6 +670,57 @@ describe('node-fetch', () => {
     })
   })
 
+  it('should decompress zstandard response', function () {
+    if (typeof zlib.createZstdDecompress !== 'function') {
+      this.skip()
+    }
+
+    const url = `${base}zstandard`
+    return fetch(url).then(res => {
+      assert.strictEqual(res.headers.get('content-type'), 'text/plain')
+      assert.strictEqual(res.headers.get('content-encoding'), 'zstd')
+      return res.text().then(result => {
+        assert.strictEqual(typeof result, 'string')
+        assert.strictEqual(result, 'hello world')
+      })
+    })
+  })
+
+  it('should handle not modified response with zstandard encoding', function () {
+    if (typeof zlib.createZstdDecompress !== 'function') {
+      this.skip()
+    }
+    const url = `${base}not-modified/zstandard`
+    return fetch(url).then(res => {
+      assert.strictEqual(res.status, 304)
+      assert.strictEqual(res.statusText, 'Not Modified')
+      assert.strictEqual(res.headers.get('content-encoding'), 'zstd')
+      assert.strictEqual(res.ok, false)
+      return res.text().then(result => {
+        assert.strictEqual(typeof result, 'string')
+        assert.strictEqual(result, '')
+      })
+    })
+  })
+
+  it('should handle no content response with zstandard encoding', function () {
+    if (typeof zlib.createZstdDecompress !== 'function') {
+      this.skip()
+    }
+
+    const url = `${base}no-content/zstandard`
+    return fetch(url).then(res => {
+      assert.strictEqual(res.status, 204)
+      assert.strictEqual(res.statusText, 'No Content')
+      assert.strictEqual(res.headers.get('content-encoding'), 'zstd')
+      assert.strictEqual(res.ok, true)
+      return res.text().then(result => {
+        assert.strictEqual(typeof result, 'string')
+        assert.strictEqual(result, '')
+      })
+    })
+  })
+
   it('should handle no content response with brotli encoding', function () {
     if (typeof zlib.createBrotliDecompress !== 'function') {
       this.skip()

test/node-fetch/utils/server.js

@@ -164,6 +164,20 @@ module.exports = class TestServer {
       }
     }
 
+    if (p === '/zstandard') {
+      res.statusCode = 200
+      res.setHeader('Content-Type', 'text/plain')
+      if (typeof zlib.createZstdDecompress === 'function') {
+        res.setHeader('Content-Encoding', 'zstd')
+        zlib.zstdCompress('hello world', (err, buffer) => {
+          if (err) {
+            throw err
+          }
+          res.end(buffer)
+        })
+      }
+    }
+
     if (p === '/multiunsupported') {
       res.statusCode = 200
       res.setHeader('Content-Type', 'text/plain')
@@ -406,6 +420,18 @@ module.exports = class TestServer {
       res.end()
     }
 
+    if (p === '/no-content/zstandard') {
+      res.statusCode = 204
+      res.setHeader('Content-Encoding', 'zstd')
+      res.end()
+    }
+
+    if (p === '/not-modified/zstandard') {
+      res.statusCode = 304
+      res.setHeader('Content-Encoding', 'zstd')
+      res.end()
+    }
+
     if (p === '/not-modified') {
       res.statusCode = 304
       res.end()