From 4fb8c8ad110652d3169b3d0272df5550576e383c Mon Sep 17 00:00:00 2001
From: git-srinivas <vykuntamsrinivas@gmail.com>
Date: Fri, 22 Oct 2021 01:08:07 +0530
Subject: [PATCH] test:  test cases for surrogate to usv string

Added test cases to check surrogate code points to usv string conversion
in stream consumers and text decoder

Fixes: https://github.com/nodejs/node/issues/39804
---
 test/parallel/test-stream-consumers.js           | 16 +++++++++-------
 .../test-whatwg-encoding-custom-textdecoder.js   | 11 ++---------
 2 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/test/parallel/test-stream-consumers.js b/test/parallel/test-stream-consumers.js
index 628c35a793596b..aba1864565d61a 100644
--- a/test/parallel/test-stream-consumers.js
+++ b/test/parallel/test-stream-consumers.js
@@ -13,6 +13,7 @@ const {
 } = require('stream/consumers');
 
 const {
+  Readable,
   PassThrough
 } = require('stream');
 
@@ -74,15 +75,16 @@ const kArrayBuffer =
 }
 
 {
-  const passthrough = new PassThrough();
+  const readable = new Readable({
+    read() {}
+  });
 
-  text(passthrough).then(common.mustCall(async (str) => {
-    assert.strictEqual(str.length, 11);
-    assert.deepStrictEqual(str, 'hellothere\ufffd');
-  }));
+  text(readable).then((data) => {
+    assert.deepStrictEqual(data, 'foo\ufffd\ufffd\ufffd');
+  });
 
-  passthrough.write('hello');
-  setTimeout(() => passthrough.end('there\ud801'), 10);
+  readable.push(new Uint8Array([0x66, 0x6f, 0x6f, 0xed, 0xa0, 0x80]));
+  readable.push(null);
 }
 
 {
diff --git a/test/parallel/test-whatwg-encoding-custom-textdecoder.js b/test/parallel/test-whatwg-encoding-custom-textdecoder.js
index 29a7c8c9d89d0e..e65c424619d52a 100644
--- a/test/parallel/test-whatwg-encoding-custom-textdecoder.js
+++ b/test/parallel/test-whatwg-encoding-custom-textdecoder.js
@@ -195,14 +195,7 @@ if (common.hasIntl) {
 // Test TextDecoder for surrogate code points
 {
   const decoder = new TextDecoder();
-  const chunk = Buffer.from([0x66, 0x6f, 0x6f, 0xed, 0xa0, 0x80]);
+  const chunk = new Uint8Array([0x66, 0x6f, 0x6f, 0xed]);
   const str = decoder.decode(chunk);
-  assert.strictEqual(str, 'foo\ufffd\ufffd\ufffd');
-}
-
-{
-  const decoder = new TextDecoder();
-  const chunk = Buffer.from('\ud807');
-  const str = decoder.decode(chunk);
-  assert.strictEqual(str, '\ufffd');
+  assert.strictEqual(str, 'foo\ufffd');
 }