1 files changed, 37 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-duplex-writable-finished.js b/tests/node_compat/test/parallel/test-stream-duplex-writable-finished.js
new file mode 100644
index 000000000..c556d14ef
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-duplex-writable-finished.js
@@ -0,0 +1,37 @@
+// 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 { Duplex } = require('stream');
+const assert = require('assert');
+
+// basic
+{
+  // Find it on Duplex.prototype
+  assert(Object.hasOwn(Duplex.prototype, 'writableFinished'));
+}
+
+// event
+{
+  const duplex = new Duplex();
+
+  duplex._write = (chunk, encoding, cb) => {
+    // The state finished should start in false.
+    assert.strictEqual(duplex.writableFinished, false);
+    cb();
+  };
+
+  duplex.on('finish', common.mustCall(() => {
+    assert.strictEqual(duplex.writableFinished, true);
+  }));
+
+  duplex.end('testing finished state', common.mustCall(() => {
+    assert.strictEqual(duplex.writableFinished, true);
+  }));
+}