1 files changed, 44 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-buffer-tostring.js b/tests/node_compat/test/parallel/test-buffer-tostring.js
new file mode 100644
index 000000000..a6f5cabe0
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-buffer-tostring.js
@@ -0,0 +1,44 @@
+// 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';
+
+const common = require('../common');
+const assert = require('assert');
+
+// utf8, ucs2, ascii, latin1, utf16le
+const encodings = ['utf8', 'utf-8', 'ucs2', 'ucs-2', 'ascii', 'latin1',
+                   'binary', 'utf16le', 'utf-16le'];
+
+encodings
+  .reduce((es, e) => es.concat(e, e.toUpperCase()), [])
+  .forEach((encoding) => {
+    assert.strictEqual(Buffer.from('foo', encoding).toString(encoding), 'foo');
+  });
+
+// base64
+['base64', 'BASE64'].forEach((encoding) => {
+  assert.strictEqual(Buffer.from('Zm9v', encoding).toString(encoding), 'Zm9v');
+});
+
+// hex
+['hex', 'HEX'].forEach((encoding) => {
+  assert.strictEqual(Buffer.from('666f6f', encoding).toString(encoding),
+                     '666f6f');
+});
+
+// Invalid encodings
+for (let i = 1; i < 10; i++) {
+  const encoding = String(i).repeat(i);
+  const error = common.expectsError({
+    code: 'ERR_UNKNOWN_ENCODING',
+    name: 'TypeError',
+    message: `Unknown encoding: ${encoding}`
+  });
+  assert.ok(!Buffer.isEncoding(encoding));
+  assert.throws(() => Buffer.from('foo').toString(encoding), error);
+}