1 files changed, 38 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-duplex-props.js b/tests/node_compat/test/parallel/test-stream-duplex-props.js
new file mode 100644
index 000000000..1eedc9404
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-duplex-props.js
@@ -0,0 +1,38 @@
+// 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 { Duplex } = require('stream');
+
+{
+  const d = new Duplex({
+    objectMode: true,
+    highWaterMark: 100
+  });
+
+  assert.strictEqual(d.writableObjectMode, true);
+  assert.strictEqual(d.writableHighWaterMark, 100);
+  assert.strictEqual(d.readableObjectMode, true);
+  assert.strictEqual(d.readableHighWaterMark, 100);
+}
+
+{
+  const d = new Duplex({
+    readableObjectMode: false,
+    readableHighWaterMark: 10,
+    writableObjectMode: true,
+    writableHighWaterMark: 100
+  });
+
+  assert.strictEqual(d.writableObjectMode, true);
+  assert.strictEqual(d.writableHighWaterMark, 100);
+  assert.strictEqual(d.readableObjectMode, false);
+  assert.strictEqual(d.readableHighWaterMark, 10);
+}