diff --git a/pkg/kubelet/cm/cpumanager/state/state_test.go b/pkg/kubelet/cm/cpumanager/state/state_test.go
new file mode 100644
index 00000000000..1eef55cbdcd
--- /dev/null
+++ b/pkg/kubelet/cm/cpumanager/state/state_test.go
@@ -0,0 +1,37 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package state
+
+import (
+	"reflect"
+	"testing"
+
+	"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
+)
+
+func TestClone(t *testing.T) {
+	expect := ContainerCPUAssignments{
+		"pod": map[string]cpuset.CPUSet{
+			"container1": cpuset.NewCPUSet(4, 5, 6),
+			"container2": cpuset.NewCPUSet(1, 2, 3),
+		},
+	}
+	actual := expect.Clone()
+	if &expect == &actual || !reflect.DeepEqual(expect, actual) {
+		t.Fail()
+	}
+}