1 files changed, 69 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-buffer-slow.js b/tests/node_compat/test/parallel/test-buffer-slow.js
new file mode 100644
index 000000000..eed2898c5
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-buffer-slow.js
@@ -0,0 +1,69 @@
+// 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 buffer = require('buffer');
+const SlowBuffer = buffer.SlowBuffer;
+
+const ones = [1, 1, 1, 1];
+
+// Should create a Buffer
+let sb = SlowBuffer(4);
+assert(sb instanceof Buffer);
+assert.strictEqual(sb.length, 4);
+sb.fill(1);
+for (const [key, value] of sb.entries()) {
+  assert.deepStrictEqual(value, ones[key]);
+}
+
+// underlying ArrayBuffer should have the same length
+assert.strictEqual(sb.buffer.byteLength, 4);
+
+// Should work without new
+sb = SlowBuffer(4);
+assert(sb instanceof Buffer);
+assert.strictEqual(sb.length, 4);
+sb.fill(1);
+for (const [key, value] of sb.entries()) {
+  assert.deepStrictEqual(value, ones[key]);
+}
+
+// Should work with edge cases
+assert.strictEqual(SlowBuffer(0).length, 0);
+try {
+  assert.strictEqual(
+    SlowBuffer(buffer.kMaxLength).length, buffer.kMaxLength);
+} catch (e) {
+  // Don't match on message as it is from the JavaScript engine. V8 and
+  // ChakraCore provide different messages.
+  assert.strictEqual(e.name, 'RangeError');
+}
+
+// Should throw with invalid length type
+const bufferInvalidTypeMsg = {
+  code: 'ERR_INVALID_ARG_TYPE',
+  name: 'TypeError',
+  message: /^The "size" argument must be of type number/,
+};
+assert.throws(() => SlowBuffer(), bufferInvalidTypeMsg);
+assert.throws(() => SlowBuffer({}), bufferInvalidTypeMsg);
+assert.throws(() => SlowBuffer('6'), bufferInvalidTypeMsg);
+assert.throws(() => SlowBuffer(true), bufferInvalidTypeMsg);
+
+// Should throw with invalid length value
+const bufferMaxSizeMsg = {
+  code: 'ERR_INVALID_ARG_VALUE',
+  name: 'RangeError',
+  message: /^The argument 'size' is invalid\. Received [^"]*$/
+};
+assert.throws(() => SlowBuffer(NaN), bufferMaxSizeMsg);
+assert.throws(() => SlowBuffer(Infinity), bufferMaxSizeMsg);
+assert.throws(() => SlowBuffer(-1), bufferMaxSizeMsg);
+assert.throws(() => SlowBuffer(buffer.kMaxLength + 1), bufferMaxSizeMsg);