1 files changed, 106 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-writable-finished.js b/tests/node_compat/test/parallel/test-stream-writable-finished.js
new file mode 100644
index 000000000..30ae737f9
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-stream-writable-finished.js
@@ -0,0 +1,106 @@
+// 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 { Writable } = require('stream');
+const assert = require('assert');
+
+// basic
+{
+  // Find it on Writable.prototype
+  assert(Object.hasOwn(Writable.prototype, 'writableFinished'));
+}
+
+// event
+{
+  const writable = new Writable();
+
+  writable._write = (chunk, encoding, cb) => {
+    // The state finished should start in false.
+    assert.strictEqual(writable.writableFinished, false);
+    cb();
+  };
+
+  writable.on('finish', common.mustCall(() => {
+    assert.strictEqual(writable.writableFinished, true);
+  }));
+
+  writable.end('testing finished state', common.mustCall(() => {
+    assert.strictEqual(writable.writableFinished, true);
+  }));
+}
+
+{
+  // Emit finish asynchronously.
+
+  const w = new Writable({
+    write(chunk, encoding, cb) {
+      cb();
+    }
+  });
+
+  w.end();
+  w.on('finish', common.mustCall());
+}
+
+{
+  // Emit prefinish synchronously.
+
+  const w = new Writable({
+    write(chunk, encoding, cb) {
+      cb();
+    }
+  });
+
+  let sync = true;
+  w.on('prefinish', common.mustCall(() => {
+    assert.strictEqual(sync, true);
+  }));
+  w.end();
+  sync = false;
+}
+
+{
+  // Emit prefinish synchronously w/ final.
+
+  const w = new Writable({
+    write(chunk, encoding, cb) {
+      cb();
+    },
+    final(cb) {
+      cb();
+    }
+  });
+
+  let sync = true;
+  w.on('prefinish', common.mustCall(() => {
+    assert.strictEqual(sync, true);
+  }));
+  w.end();
+  sync = false;
+}
+
+
+{
+  // Call _final synchronously.
+
+  let sync = true;
+  const w = new Writable({
+    write(chunk, encoding, cb) {
+      cb();
+    },
+    final: common.mustCall((cb) => {
+      assert.strictEqual(sync, true);
+      cb();
+    })
+  });
+
+  w.end();
+  sync = false;
+}