1 files changed, 10 insertions, 0 deletions
diff --git a/toolkit/components/processtools/tests/xpcshell/test_total_cpu_time_child.js b/toolkit/components/processtools/tests/xpcshell/test_total_cpu_time_child.js
new file mode 100644
index 0000000000..88ac480a09
--- /dev/null
+++ b/toolkit/components/processtools/tests/xpcshell/test_total_cpu_time_child.js
@@ -0,0 +1,10 @@
+const MESSAGE_CHILD_TEST_DONE = "ChildTest:Done";
+
+function run_test() {
+  const kBusyWaitForMs = 50;
+  let startTime = Date.now();
+  while (Date.now() - startTime < kBusyWaitForMs) {
+    // Burn CPU time...
+  }
+  do_send_remote_message(MESSAGE_CHILD_TEST_DONE, kBusyWaitForMs);
+}