diff --git a/test/parallel/test-fs-truncate.js b/test/parallel/test-fs-truncate.js
index ab0148a246..442038eeb5 100644
--- a/test/parallel/test-fs-truncate.js
+++ b/test/parallel/test-fs-truncate.js
@@ -106,3 +106,43 @@ function testFtruncate(cb) {
     });
   });
 }
+
+
+// Make sure if the size of the file is smaller than the length then it is
+// filled with zeroes.
+
+{
+  const file1 = path.resolve(tmp, 'truncate-file-1.txt');
+  fs.writeFileSync(file1, 'Hi');
+  fs.truncateSync(file1, 4);
+  assert(fs.readFileSync(file1).equals(Buffer.from('Hi\u0000\u0000')));
+}
+
+{
+  const file2 = path.resolve(tmp, 'truncate-file-2.txt');
+  fs.writeFileSync(file2, 'Hi');
+  const fd = fs.openSync(file2, 'r+');
+  process.on('exit', () => fs.closeSync(fd));
+  fs.ftruncateSync(fd, 4);
+  assert(fs.readFileSync(file2).equals(Buffer.from('Hi\u0000\u0000')));
+}
+
+{
+  const file3 = path.resolve(tmp, 'truncate-file-3.txt');
+  fs.writeFileSync(file3, 'Hi');
+  fs.truncate(file3, 4, common.mustCall(function(err) {
+    assert.ifError(err);
+    assert(fs.readFileSync(file3).equals(Buffer.from('Hi\u0000\u0000')));
+  }));
+}
+
+{
+  const file4 = path.resolve(tmp, 'truncate-file-4.txt');
+  fs.writeFileSync(file4, 'Hi');
+  const fd = fs.openSync(file4, 'r+');
+  process.on('exit', () => fs.closeSync(fd));
+  fs.ftruncate(fd, 4, common.mustCall(function(err) {
+    assert.ifError(err);
+    assert(fs.readFileSync(file4).equals(Buffer.from('Hi\u0000\u0000')));
+  }));
+}