1 files changed, 49 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-buffer-isascii.js b/tests/node_compat/test/parallel/test-buffer-isascii.js
new file mode 100644
index 000000000..59612bb9d
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-buffer-isascii.js
@@ -0,0 +1,49 @@
+// 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 `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
+
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const { isAscii, Buffer } = require('buffer');
+const { TextEncoder } = require('util');
+
+const encoder = new TextEncoder();
+
+assert.strictEqual(isAscii(encoder.encode('hello')), true);
+assert.strictEqual(isAscii(encoder.encode('ğ')), false);
+assert.strictEqual(isAscii(Buffer.from([])), true);
+
+[
+  undefined,
+  '', 'hello',
+  false, true,
+  0, 1,
+  0n, 1n,
+  Symbol(),
+  () => {},
+  {}, [], null,
+].forEach((input) => {
+  assert.throws(
+    () => { isAscii(input); },
+    {
+      code: 'ERR_INVALID_ARG_TYPE',
+    },
+  );
+});
+
+{
+  // Test with detached array buffers
+  const arrayBuffer = new ArrayBuffer(1024);
+  structuredClone(arrayBuffer, { transfer: [arrayBuffer] });
+  assert.throws(
+    () => { isAscii(arrayBuffer); },
+    {
+      code: 'ERR_INVALID_STATE'
+    }
+  );
+}