test: fix failure in test/sequential/test-heapdump.js

The test was failing when it was being run with superuser privileges, so this changes the test from attempting to write to a read-only file to attempting to write to a file with the same name as that of an existing directory, as that is a more reliable way of making v8.writeHeapSnapshot() throw even when run with sudo. Fixes: #41643 Signed-off-by: Darshan Sen <[email protected]>
nodejs · Jan 30, 2022 · c6e4596 · c6e4596
1 parent ccb8aae
commit c6e4596
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/test/sequential/test-heapdump.js b/test/sequential/test-heapdump.js
@@ -25,13 +25,13 @@ process.chdir(tmpdir.path);
 }
 
 {
-  const readonlyFile = 'ro';
-  fs.writeFileSync(readonlyFile, Buffer.alloc(0), { mode: 0o444 });
+  const directory = 'directory';
+  fs.mkdirSync(directory);
   assert.throws(() => {
-    writeHeapSnapshot(readonlyFile);
+    writeHeapSnapshot(directory);
   }, (e) => {
     assert.ok(e, 'writeHeapSnapshot should error');
-    assert.strictEqual(e.code, 'EACCES');
+    assert.strictEqual(e.code, 'EISDIR');
     assert.strictEqual(e.syscall, 'open');
     return true;
   });