test: fix writefile with fd

fix writefile with fd so that it'll close the fds
that is uses during the test.

PR-URL: #38820
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>

Author: Linkgoron

test/parallel/test-fs-writefile-with-fd.js

@@ -18,27 +18,39 @@ tmpdir.refresh();
 
   /* Open the file descriptor. */
   const fd = fs.openSync(filename, 'w');
+  try {
+    /* Write only five characters, so that the position moves to five. */
+    assert.deepStrictEqual(fs.writeSync(fd, 'Hello'), 5);
+    assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'Hello');
 
-  /* Write only five characters, so that the position moves to five. */
-  assert.deepStrictEqual(fs.writeSync(fd, 'Hello'), 5);
-  assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'Hello');
-
-  /* Write some more with writeFileSync(). */
-  fs.writeFileSync(fd, 'World');
-
-  /* New content should be written at position five, instead of zero. */
-  assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'HelloWorld');
+    /* Write some more with writeFileSync(). */
+    fs.writeFileSync(fd, 'World');
 
-  /* Close the file descriptor. */
-  fs.closeSync(fd);
+    /* New content should be written at position five, instead of zero. */
+    assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'HelloWorld');
+  } finally {
+    fs.closeSync(fd);
+  }
 }
 
+const fdsToCloseOnExit = [];
+process.on('beforeExit', common.mustCall(() => {
+  for (const fd of fdsToCloseOnExit) {
+    try {
+      fs.closeSync(fd);
+    } catch {
+      // Failed to close, ignore
+    }
+  }
+}));
+
 {
   /* writeFile() test. */
   const file = join(tmpdir.path, 'test1.txt');
 
   /* Open the file descriptor. */
   fs.open(file, 'w', common.mustSucceed((fd) => {
+    fdsToCloseOnExit.push(fd);
     /* Write only five characters, so that the position moves to five. */
     fs.write(fd, 'Hello', common.mustSucceed((bytes) => {
       assert.strictEqual(bytes, 5);
@@ -48,9 +60,6 @@ tmpdir.refresh();
       fs.writeFile(fd, 'World', common.mustSucceed(() => {
         /* New content should be written at position five, instead of zero. */
         assert.deepStrictEqual(fs.readFileSync(file).toString(), 'HelloWorld');
-
-        /* Close the file descriptor. */
-        fs.closeSync(fd);
       }));
     }));
   }));