1 files changed, 136 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-buffer-slice.js b/tests/node_compat/test/parallel/test-buffer-slice.js
new file mode 100644
index 000000000..518618d8d
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-buffer-slice.js
@@ -0,0 +1,136 @@
+// 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.
+
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+assert.strictEqual(Buffer.from('hello', 'utf8').slice(0, 0).length, 0);
+assert.strictEqual(Buffer('hello', 'utf8').slice(0, 0).length, 0);
+
+const buf = Buffer.from('0123456789', 'utf8');
+const expectedSameBufs = [
+  [buf.slice(-10, 10), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(-20, 10), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(-20, -10), Buffer.from('', 'utf8')],
+  [buf.slice(), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(0), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(0, 0), Buffer.from('', 'utf8')],
+  [buf.slice(undefined), Buffer.from('0123456789', 'utf8')],
+  [buf.slice('foobar'), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(undefined, undefined), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(2), Buffer.from('23456789', 'utf8')],
+  [buf.slice(5), Buffer.from('56789', 'utf8')],
+  [buf.slice(10), Buffer.from('', 'utf8')],
+  [buf.slice(5, 8), Buffer.from('567', 'utf8')],
+  [buf.slice(8, -1), Buffer.from('8', 'utf8')],
+  [buf.slice(-10), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(0, -9), Buffer.from('0', 'utf8')],
+  [buf.slice(0, -10), Buffer.from('', 'utf8')],
+  [buf.slice(0, -1), Buffer.from('012345678', 'utf8')],
+  [buf.slice(2, -2), Buffer.from('234567', 'utf8')],
+  [buf.slice(0, 65536), Buffer.from('0123456789', 'utf8')],
+  [buf.slice(65536, 0), Buffer.from('', 'utf8')],
+  [buf.slice(-5, -8), Buffer.from('', 'utf8')],
+  [buf.slice(-5, -3), Buffer.from('56', 'utf8')],
+  [buf.slice(-10, 10), Buffer.from('0123456789', 'utf8')],
+  [buf.slice('0', '1'), Buffer.from('0', 'utf8')],
+  [buf.slice('-5', '10'), Buffer.from('56789', 'utf8')],
+  [buf.slice('-10', '10'), Buffer.from('0123456789', 'utf8')],
+  [buf.slice('-10', '-5'), Buffer.from('01234', 'utf8')],
+  [buf.slice('-10', '-0'), Buffer.from('', 'utf8')],
+  [buf.slice('111'), Buffer.from('', 'utf8')],
+  [buf.slice('0', '-111'), Buffer.from('', 'utf8')],
+];
+
+for (let i = 0, s = buf.toString(); i < buf.length; ++i) {
+  expectedSameBufs.push(
+    [buf.slice(i), Buffer.from(s.slice(i))],
+    [buf.slice(0, i), Buffer.from(s.slice(0, i))],
+    [buf.slice(-i), Buffer.from(s.slice(-i))],
+    [buf.slice(0, -i), Buffer.from(s.slice(0, -i))]
+  );
+}
+
+expectedSameBufs.forEach(([buf1, buf2]) => {
+  assert.strictEqual(Buffer.compare(buf1, buf2), 0);
+});
+
+const utf16Buf = Buffer.from('0123456789', 'utf16le');
+assert.deepStrictEqual(utf16Buf.slice(0, 6), Buffer.from('012', 'utf16le'));
+// Try to slice a zero length Buffer.
+// See https://github.com/joyent/node/issues/5881
+assert.strictEqual(Buffer.alloc(0).slice(0, 1).length, 0);
+
+{
+  // Single argument slice
+  assert.strictEqual(Buffer.from('abcde', 'utf8').slice(1).toString('utf8'),
+                     'bcde');
+}
+
+// slice(0,0).length === 0
+assert.strictEqual(Buffer.from('hello', 'utf8').slice(0, 0).length, 0);
+
+{
+  // Regression tests for https://github.com/nodejs/node/issues/9096
+  const buf = Buffer.from('abcd', 'utf8');
+  assert.strictEqual(buf.slice(buf.length / 3).toString('utf8'), 'bcd');
+  assert.strictEqual(
+    buf.slice(buf.length / 3, buf.length).toString(),
+    'bcd'
+  );
+}
+
+{
+  const buf = Buffer.from('abcdefg', 'utf8');
+  assert.strictEqual(buf.slice(-(-1 >>> 0) - 1).toString('utf8'),
+                     buf.toString('utf8'));
+}
+
+{
+  const buf = Buffer.from('abc', 'utf8');
+  assert.strictEqual(buf.slice(-0.5).toString('utf8'), buf.toString('utf8'));
+}
+
+{
+  const buf = Buffer.from([
+    1, 29, 0, 0, 1, 143, 216, 162, 92, 254, 248, 63, 0,
+    0, 0, 18, 184, 6, 0, 175, 29, 0, 8, 11, 1, 0, 0,
+  ]);
+  const chunk1 = Buffer.from([
+    1, 29, 0, 0, 1, 143, 216, 162, 92, 254, 248, 63, 0,
+  ]);
+  const chunk2 = Buffer.from([
+    0, 0, 18, 184, 6, 0, 175, 29, 0, 8, 11, 1, 0, 0,
+  ]);
+  const middle = buf.length / 2;
+
+  assert.deepStrictEqual(buf.slice(0, middle), chunk1);
+  assert.deepStrictEqual(buf.slice(middle), chunk2);
+}