diff --git a/backend-simulators/pim/pim-simulator/tests/common.rs b/backend-simulators/pim/pim-simulator/tests/common.rs
new file mode 100644
index 0000000..a2b4e8b
--- /dev/null
+++ b/backend-simulators/pim/pim-simulator/tests/common.rs
@@ -0,0 +1,5 @@
+use pimcore::cpu::CPU;
+
+pub fn empty_cpu(num_cores: usize) -> CPU<'static> {
+    CPU::new(num_cores, vec![Vec::new(); num_cores + 1])
+}