1 files changed, 55 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-buffer-badhex.js b/tests/node_compat/test/parallel/test-buffer-badhex.js
new file mode 100644
index 000000000..cafaa0887
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-buffer-badhex.js
@@ -0,0 +1,55 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+require('../common');
+const assert = require('assert');
+
+// Test hex strings and bad hex strings
+{
+  const buf = Buffer.alloc(4);
+  assert.strictEqual(buf.length, 4);
+  assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0]));
+  assert.strictEqual(buf.write('abcdxx', 0, 'hex'), 2);
+  assert.deepStrictEqual(buf, Buffer.from([0xab, 0xcd, 0x00, 0x00]));
+  assert.strictEqual(buf.toString('hex'), 'abcd0000');
+  assert.strictEqual(buf.write('abcdef01', 0, 'hex'), 4);
+  assert.deepStrictEqual(buf, Buffer.from([0xab, 0xcd, 0xef, 0x01]));
+  assert.strictEqual(buf.toString('hex'), 'abcdef01');
+
+  const copy = Buffer.from(buf.toString('hex'), 'hex');
+  assert.strictEqual(buf.toString('hex'), copy.toString('hex'));
+}
+
+{
+  const buf = Buffer.alloc(5);
+  assert.strictEqual(buf.write('abcdxx', 1, 'hex'), 2);
+  assert.strictEqual(buf.toString('hex'), '00abcd0000');
+}
+
+{
+  const buf = Buffer.alloc(4);
+  assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0]));
+  assert.strictEqual(buf.write('xxabcd', 0, 'hex'), 0);
+  assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0]));
+  assert.strictEqual(buf.write('xxab', 1, 'hex'), 0);
+  assert.deepStrictEqual(buf, Buffer.from([0, 0, 0, 0]));
+  assert.strictEqual(buf.write('cdxxab', 0, 'hex'), 1);
+  assert.deepStrictEqual(buf, Buffer.from([0xcd, 0, 0, 0]));
+}
+
+{
+  const buf = Buffer.alloc(256);
+  for (let i = 0; i < 256; i++)
+    buf[i] = i;
+
+  const hex = buf.toString('hex');
+  assert.deepStrictEqual(Buffer.from(hex, 'hex'), buf);
+
+  const badHex = `${hex.slice(0, 256)}xx${hex.slice(256, 510)}`;
+  assert.deepStrictEqual(Buffer.from(badHex, 'hex'), buf.slice(0, 128));
+}