diff --git a/controllers/clusterinfo/clusterinfo_test.go b/controllers/clusterinfo/clusterinfo_test.go
new file mode 100644
index 0000000000..9fc4890d36
--- /dev/null
+++ b/controllers/clusterinfo/clusterinfo_test.go
@@ -0,0 +1,82 @@
+/**
+# Copyright (c) NVIDIA CORPORATION.  All rights reserved.
+#
+# 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 clusterinfo
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	corev1 "k8s.io/api/core/v1"
+
+	"github.com/NVIDIA/gpu-operator/internal/consts"
+)
+
+func TestGetRuntimeString(t *testing.T) {
+	tests := []struct {
+		description string
+		runtimeVer  string
+		expected    string
+		expectError bool
+	}{
+		{
+			description: "docker runtime",
+			runtimeVer:  "docker://20.10.7",
+			expected:    consts.Docker,
+		},
+		{
+			description: "containerd runtime",
+			runtimeVer:  "containerd://1.6.8",
+			expected:    consts.Containerd,
+		},
+		{
+			description: "cri-o runtime",
+			runtimeVer:  "cri-o://1.24.1",
+			expected:    consts.CRIO,
+		},
+		{
+			description: "unrecognized runtime returns error",
+			runtimeVer:  "unknown-runtime://1.0.0",
+			expectError: true,
+		},
+		{
+			description: "empty runtime version returns error",
+			runtimeVer:  "",
+			expectError: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.description, func(t *testing.T) {
+			node := corev1.Node{
+				Status: corev1.NodeStatus{
+					NodeInfo: corev1.NodeSystemInfo{
+						ContainerRuntimeVersion: tc.runtimeVer,
+					},
+				},
+			}
+
+			result, err := getRuntimeString(node)
+
+			if tc.expectError {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+			require.Equal(t, tc.expected, result)
+		})
+	}
+}