1 files changed, 85 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-writable-change-default-encoding.js b/tests/node_compat/test/parallel/test-stream-writable-change-default-encoding.js
new file mode 100644
index 000000000..547309d70
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-writable-change-default-encoding.js
@@ -0,0 +1,85 @@
+// 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');
+
+const stream = require('stream');
+
+class MyWritable extends stream.Writable {
+  constructor(fn, options) {
+    super(options);
+    this.fn = fn;
+  }
+
+  _write(chunk, encoding, callback) {
+    this.fn(Buffer.isBuffer(chunk), typeof chunk, encoding);
+    callback();
+  }
+}
+
+(function defaultCondingIsUtf8() {
+  const m = new MyWritable(function(isBuffer, type, enc) {
+    assert.strictEqual(enc, 'utf8');
+  }, { decodeStrings: false });
+  m.write('foo');
+  m.end();
+}());
+
+(function changeDefaultEncodingToAscii() {
+  const m = new MyWritable(function(isBuffer, type, enc) {
+    assert.strictEqual(enc, 'ascii');
+  }, { decodeStrings: false });
+  m.setDefaultEncoding('ascii');
+  m.write('bar');
+  m.end();
+}());
+
+// Change default encoding to invalid value.
+assert.throws(() => {
+  const m = new MyWritable(
+    (isBuffer, type, enc) => {},
+    { decodeStrings: false });
+  m.setDefaultEncoding({});
+  m.write('bar');
+  m.end();
+}, {
+  name: 'TypeError',
+  code: 'ERR_UNKNOWN_ENCODING',
+  message: 'Unknown encoding: {}'
+});
+
+(function checkVariableCaseEncoding() {
+  const m = new MyWritable(function(isBuffer, type, enc) {
+    assert.strictEqual(enc, 'ascii');
+  }, { decodeStrings: false });
+  m.setDefaultEncoding('AsCii');
+  m.write('bar');
+  m.end();
+}());