test: fix flaky test-perf-hooks-histogram

Make sure the histogram containing event loop delay info is posted only when at least one datapoint is collected. Fixes: #43503 PR-URL: #43567 Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Jul 12, 2022 · 2adf4e7 · 2adf4e7
1 parent 508cbbc
commit 2adf4e7
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/test/parallel/test-perf-hooks-histogram.js b/test/parallel/test-perf-hooks-histogram.js
@@ -89,7 +89,12 @@ const { inspect } = require('util');
     strictEqual(data.enable, undefined);
     mc.port1.close();
   });
-  setTimeout(() => mc.port2.postMessage(e), 100);
+  const interval = setInterval(() => {
+    if (e.count > 0) {
+      clearInterval(interval);
+      mc.port2.postMessage(e);
+    }
+  }, 50);
 }
 
 {