3 files changed, 43 insertions, 1 deletions
diff --git a/tests/node_compat/config.jsonc b/tests/node_compat/config.jsonc
index ed63b5950..8c8d503d5 100644
--- a/tests/node_compat/config.jsonc
+++ b/tests/node_compat/config.jsonc
@@ -335,6 +335,7 @@
       "test-fs-open-numeric-flags.js",
       "test-fs-open.js",
       "test-fs-opendir.js",
+      "test-fs-promises-writefile-with-fd.js",
       "test-fs-read-stream-autoClose.js",
       "test-fs-read-stream-concurrent-reads.js",
       "test-fs-read-stream-double-close.js",
diff --git a/tests/node_compat/runner/TODO.md b/tests/node_compat/runner/TODO.md
index 1656729e2..24e827182 100644
--- a/tests/node_compat/runner/TODO.md
+++ b/tests/node_compat/runner/TODO.md
@@ -829,7 +829,6 @@ NOTE: This file should not be manually edited. Please edit `tests/node_compat/co
 - [parallel/test-fs-promises-watch.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promises-watch.js)
 - [parallel/test-fs-promises-write-optional-params.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promises-write-optional-params.js)
 - [parallel/test-fs-promises-writefile-typedarray.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promises-writefile-typedarray.js)
-- [parallel/test-fs-promises-writefile-with-fd.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promises-writefile-with-fd.js)
 - [parallel/test-fs-promises-writefile.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promises-writefile.js)
 - [parallel/test-fs-promises.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promises.js)
 - [parallel/test-fs-promisified.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-fs-promisified.js)
diff --git a/tests/node_compat/test/parallel/test-fs-promises-writefile-with-fd.js b/tests/node_compat/test/parallel/test-fs-promises-writefile-with-fd.js
new file mode 100644
index 000000000..f750c28be
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-fs-promises-writefile-with-fd.js
@@ -0,0 +1,42 @@
+// 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 `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
+
+'use strict';
+
+// This test makes sure that `writeFile()` always writes from the current
+// position of the file, instead of truncating the file.
+
+const common = require('../common');
+const assert = require('assert');
+const { readFileSync } = require('fs');
+const { open } = require('fs').promises;
+
+const tmpdir = require('../common/tmpdir');
+tmpdir.refresh();
+
+const fn = tmpdir.resolve('test.txt');
+
+async function writeFileTest() {
+  const handle = await open(fn, 'w');
+
+  /* Write only five bytes, so that the position moves to five. */
+  const buf = Buffer.from('Hello');
+  const { bytesWritten } = await handle.write(buf, 0, 5, null);
+  assert.strictEqual(bytesWritten, 5);
+
+  /* Write some more with writeFile(). */
+  await handle.writeFile('World');
+
+  /* New content should be written at position five, instead of zero. */
+  assert.strictEqual(readFileSync(fn).toString(), 'HelloWorld');
+
+  await handle.close();
+}
+
+
+writeFileTest()
+  .then(common.mustCall());