From 76c77bb32c642283e61c9a6bb4936401fc43eaba Mon Sep 17 00:00:00 2001
From: Nikolai Vavilov <vvnicholas@gmail.com>
Date: Wed, 6 May 2020 20:10:15 +0300
Subject: Check destination length in encodeInto (#5078)

---
 cli/js/tests/text_encoding_test.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'cli/js/tests/text_encoding_test.ts')

diff --git a/cli/js/tests/text_encoding_test.ts b/cli/js/tests/text_encoding_test.ts
index c8a7fbe42..87b601f36 100644
--- a/cli/js/tests/text_encoding_test.ts
+++ b/cli/js/tests/text_encoding_test.ts
@@ -158,6 +158,19 @@ unitTest(function textEncodeInto2(): void {
   ]);
 });
 
+unitTest(function textEncodeInto3(): void {
+  const fixture = "𝓽𝓮𝔁𝓽";
+  const encoder = new TextEncoder();
+  const bytes = new Uint8Array(5);
+  const result = encoder.encodeInto(fixture, bytes);
+  assertEquals(result.read, 2);
+  assertEquals(result.written, 4);
+  // prettier-ignore
+  assertEquals(Array.from(bytes), [
+    0xf0, 0x9d, 0x93, 0xbd, 0x00,
+  ]);
+});
+
 unitTest(function textDecoderSharedUint8Array(): void {
   const ab = new SharedArrayBuffer(6);
   const dataView = new DataView(ab);
-- 
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