1 files changed, 101 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-buffer-compare-offset.js b/tests/node_compat/test/parallel/test-buffer-compare-offset.js
new file mode 100644
index 000000000..bb7ba2998
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-buffer-compare-offset.js
@@ -0,0 +1,101 @@
+// 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');
+
+const a = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8, 9, 0]);
+const b = Buffer.from([5, 6, 7, 8, 9, 0, 1, 2, 3, 4]);
+
+assert.strictEqual(a.compare(b), -1);
+
+// Equivalent to a.compare(b).
+assert.strictEqual(a.compare(b, 0), -1);
+assert.throws(() => a.compare(b, '0'), { code: 'ERR_INVALID_ARG_TYPE' });
+assert.strictEqual(a.compare(b, undefined), -1);
+
+// Equivalent to a.compare(b).
+assert.strictEqual(a.compare(b, 0, undefined, 0), -1);
+
+// Zero-length target, return 1
+assert.strictEqual(a.compare(b, 0, 0, 0), 1);
+assert.throws(
+  () => a.compare(b, 0, '0', '0'),
+  { code: 'ERR_INVALID_ARG_TYPE' }
+);
+
+// Equivalent to Buffer.compare(a, b.slice(6, 10))
+assert.strictEqual(a.compare(b, 6, 10), 1);
+
+// Zero-length source, return -1
+assert.strictEqual(a.compare(b, 6, 10, 0, 0), -1);
+
+// Zero-length source and target, return 0
+assert.strictEqual(a.compare(b, 0, 0, 0, 0), 0);
+assert.strictEqual(a.compare(b, 1, 1, 2, 2), 0);
+
+// Equivalent to Buffer.compare(a.slice(4), b.slice(0, 5))
+assert.strictEqual(a.compare(b, 0, 5, 4), 1);
+
+// Equivalent to Buffer.compare(a.slice(1), b.slice(5))
+assert.strictEqual(a.compare(b, 5, undefined, 1), 1);
+
+// Equivalent to Buffer.compare(a.slice(2), b.slice(2, 4))
+assert.strictEqual(a.compare(b, 2, 4, 2), -1);
+
+// Equivalent to Buffer.compare(a.slice(4), b.slice(0, 7))
+assert.strictEqual(a.compare(b, 0, 7, 4), -1);
+
+// Equivalent to Buffer.compare(a.slice(4, 6), b.slice(0, 7));
+assert.strictEqual(a.compare(b, 0, 7, 4, 6), -1);
+
+// Null is ambiguous.
+assert.throws(
+  () => a.compare(b, 0, null),
+  { code: 'ERR_INVALID_ARG_TYPE' }
+);
+
+// Values do not get coerced.
+assert.throws(
+  () => a.compare(b, 0, { valueOf: () => 5 }),
+  { code: 'ERR_INVALID_ARG_TYPE' }
+);
+
+// Infinity should not be coerced.
+assert.throws(
+  () => a.compare(b, Infinity, -Infinity),
+  { code: 'ERR_OUT_OF_RANGE' }
+);
+
+// Zero length target because default for targetEnd <= targetSource
+assert.strictEqual(a.compare(b, 0xff), 1);
+
+assert.throws(
+  () => a.compare(b, '0xff'),
+  { code: 'ERR_INVALID_ARG_TYPE' }
+);
+assert.throws(
+  () => a.compare(b, 0, '0xff'),
+  { code: 'ERR_INVALID_ARG_TYPE' }
+);
+
+const oor = { code: 'ERR_OUT_OF_RANGE' };
+
+assert.throws(() => a.compare(b, 0, 100, 0), oor);
+assert.throws(() => a.compare(b, 0, 1, 0, 100), oor);
+assert.throws(() => a.compare(b, -1), oor);
+assert.throws(() => a.compare(b, 0, Infinity), oor);
+assert.throws(() => a.compare(b, 0, 1, -1), oor);
+assert.throws(() => a.compare(b, -Infinity, Infinity), oor);
+assert.throws(() => a.compare(), {
+  code: 'ERR_INVALID_ARG_TYPE',
+  name: 'TypeError',
+  message: 'The "target" argument must be an instance of ' +
+           'Buffer or Uint8Array. Received undefined'
+});