test: add disposable histogram test

jasnell · targos · commit 5936cef60ace · 2025-05-31T13:30:49.000+02:00
PR-URL: #58384 Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: LiviaMedeiros <livia@cirno.name> Reviewed-By: Chengzhong Wu <legendecas@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
diff --git a/test/parallel/test-perf-hooks-histogram.js b/test/parallel/test-perf-hooks-histogram.js
@@ -97,6 +97,17 @@ const { inspect } = require('util');
   }, 50);
 }
 
+{
+  // Tests that the ELD histogram is disposable
+  let histogram;
+  {
+    using hi = monitorEventLoopDelay();
+    histogram = hi;
+  }
+  // The histogram should already be disabled.
+  strictEqual(histogram.disable(), false);
+}
+
 {
   const h = createHistogram();
   ok(inspect(h, { depth: null }).startsWith('Histogram'));
