test_runner: filter execArgv fallback for child tests

trivikr · richardlau · commit 83b91ea6ec00 · 2026-07-03T16:04:52.000Z
Apply the test runner propagation filter to execArgv entries that are not reported by the options binding. This prevents config-file and test-runner flags from leaking into isolated child tests while still preserving V8 flags. Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com> Assisted-by: openai:gpt-5.5 PR-URL: #64056 Refs: https://github.com/nodejs/reliability/issues?q=%22test-runner-flag-propagation%22 Reviewed-By: Filip Skokan <panva.ip@gmail.com>
diff --git a/lib/internal/test_runner/runner.js b/lib/internal/test_runner/runner.js
@@ -208,7 +208,7 @@ function getRunArgs(path, { forceExit,
   const nodeOptionsSet = new SafeSet(processNodeOptions);
   const unknownProcessExecArgv = ArrayPrototypeFilter(
     process.execArgv,
-    (arg) => !nodeOptionsSet.has(arg),
+    (arg, i, arr) => !nodeOptionsSet.has(arg) && filterExecArgv(arg, i, arr),
   );
   ArrayPrototypePushApply(runArgs, unknownProcessExecArgv);
 
