1 files changed, 92 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-unpipe-event.js b/tests/node_compat/test/parallel/test-stream-unpipe-event.js
new file mode 100644
index 000000000..d0b60f435
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-unpipe-event.js
@@ -0,0 +1,92 @@
+// 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');
+const { Writable, Readable } = require('stream');
+class NullWriteable extends Writable {
+  _write(chunk, encoding, callback) {
+    return callback();
+  }
+}
+class QuickEndReadable extends Readable {
+  _read() {
+    this.push(null);
+  }
+}
+class NeverEndReadable extends Readable {
+  _read() {}
+}
+
+{
+  const dest = new NullWriteable();
+  const src = new QuickEndReadable();
+  dest.on('pipe', common.mustCall());
+  dest.on('unpipe', common.mustCall());
+  src.pipe(dest);
+  setImmediate(() => {
+    assert.strictEqual(src._readableState.pipes.length, 0);
+  });
+}
+
+{
+  const dest = new NullWriteable();
+  const src = new NeverEndReadable();
+  dest.on('pipe', common.mustCall());
+  dest.on('unpipe', common.mustNotCall('unpipe should not have been emitted'));
+  src.pipe(dest);
+  setImmediate(() => {
+    assert.strictEqual(src._readableState.pipes.length, 1);
+  });
+}
+
+{
+  const dest = new NullWriteable();
+  const src = new NeverEndReadable();
+  dest.on('pipe', common.mustCall());
+  dest.on('unpipe', common.mustCall());
+  src.pipe(dest);
+  src.unpipe(dest);
+  setImmediate(() => {
+    assert.strictEqual(src._readableState.pipes.length, 0);
+  });
+}
+
+{
+  const dest = new NullWriteable();
+  const src = new QuickEndReadable();
+  dest.on('pipe', common.mustCall());
+  dest.on('unpipe', common.mustCall());
+  src.pipe(dest, { end: false });
+  setImmediate(() => {
+    assert.strictEqual(src._readableState.pipes.length, 0);
+  });
+}
+
+{
+  const dest = new NullWriteable();
+  const src = new NeverEndReadable();
+  dest.on('pipe', common.mustCall());
+  dest.on('unpipe', common.mustNotCall('unpipe should not have been emitted'));
+  src.pipe(dest, { end: false });
+  setImmediate(() => {
+    assert.strictEqual(src._readableState.pipes.length, 1);
+  });
+}
+
+{
+  const dest = new NullWriteable();
+  const src = new NeverEndReadable();
+  dest.on('pipe', common.mustCall());
+  dest.on('unpipe', common.mustCall());
+  src.pipe(dest, { end: false });
+  src.unpipe(dest);
+  setImmediate(() => {
+    assert.strictEqual(src._readableState.pipes.length, 0);
+  });
+}