diff --git a/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/MyUtil.ets b/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/MyUtil.ets
new file mode 100644
index 0000000000000000000000000000000000000000..c51facbb4ae72d36346dd8717ffc4c9b0f4b3493
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/MyUtil.ets
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+/*---
+  tags: [not-a-test]
+---*/
+
+namespace MyUtil{
+    
+    export interface PriKey {
+        privateKey: string
+        getKey(key: string): string
+    }
+
+    export interface PubKey {
+        publicKey: string
+        getKey(key: string): string
+    }
+
+    export interface KeyPair {
+        priKey: PriKey,
+        pubKey: PubKey
+    }
+
+}
+export default MyUtil
\ No newline at end of file
diff --git a/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/namespace_export.ets b/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/namespace_export.ets
new file mode 100644
index 0000000000000000000000000000000000000000..a0cccabd1ce0b0b82e300063781e25df4048e71b
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/namespace_export.ets
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+/*---
+  files: [MyUtil.ets]
+  tags: [not-a-test]
+---*/
+
+import MyUtil from './MyUtil'
+
+export function DHKeyPair(priKey: MyUtil.PriKey, pubKey: MyUtil.PubKey): boolean {
+  return priKey.getKey(priKey.privateKey) == pubKey.getKey(pubKey.publicKey)
+}
\ No newline at end of file
diff --git a/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/namespace_import.ets b/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/namespace_import.ets
new file mode 100644
index 0000000000000000000000000000000000000000..8457875cd29431b70c173fae45c9a450aca2bf15
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-common-tests/namespaceImport_Toplevel/namespace_import.ets
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+/*---
+  files: [MyUtil.ets]
+  files: [namespace_export.ets]
+---*/
+
+import MyUtil from './MyUtil';
+import * as compareSpecFunc from './namespace_export';
+
+class MyPriKey implements MyUtil.PriKey {
+    public privateKey: string;
+
+    constructor(privateKey: string) {
+        this.privateKey = privateKey;
+    }
+
+    getKey(key: string): string {
+        if (key === this.privateKey) {
+            return 'correct';
+        } else {
+            return 'error';
+        }
+    }
+}
+
+class MyPubKey implements MyUtil.PubKey {
+    public publicKey: string;
+
+    constructor(publicKey: string) {
+        this.publicKey = publicKey;
+    }
+
+    getKey(key: string): string {
+        if (key === this.publicKey) {
+            return 'correct';
+        } else {
+            return 'error';
+        }
+    }
+}
+
+function main() {
+    let priKey = new MyPriKey('private')
+    let pubKey = new MyPubKey('public')
+    let res: boolean = compareSpecFunc.DHKeyPair(priKey, pubKey) && true;
+    arktest.assertTrue(res)
+}
\ No newline at end of file