diff --git a/test/unittest/UTTest_device_manager_impl.cpp b/test/unittest/UTTest_device_manager_impl.cpp
index a7454928..efcb33e2 100644
--- a/test/unittest/UTTest_device_manager_impl.cpp
+++ b/test/unittest/UTTest_device_manager_impl.cpp
@@ -2639,9 +2639,9 @@ HWTEST_F(DeviceManagerImplTest, ImportCredential_002, testing::ext::TestSize.Lev
 {
     std::string packName = "com.ohos.test";
     std::string credentialInfo = R"({"processType":1,"authType":1,"userId":"123",
-    "credentialData":[ {"credentialType":1,"credentialId":"104",
+    "credentialData": [{ "credentialType": 1, "credentialId": "104",
     "authCode":"10F9F0576E61730193D2052B7F771887124A68F1607EFCF7796C1491F834CD92",
-    "serverPk":"","pkInfoSignature":"","pkInfo":"","peerDeviceId":""} ]})";
+    "serverPk":"","pkInfoSignature":"","pkInfo":"","peerDeviceId":"" }]})";
     std::shared_ptr<MockIpcClientProxy> mockInstance = std::make_shared<MockIpcClientProxy>();
     DeviceManagerImpl::GetInstance().ipcClientProxy_ = mockInstance;
     EXPECT_CALL(*mockInstance, SendRequest(testing::_, testing::_, testing::_))
@@ -2666,9 +2666,9 @@ HWTEST_F(DeviceManagerImplTest, ImportCredential_003, testing::ext::TestSize.Lev
 {
     std::string packName = "com.ohos.test";
     std::string credentialInfo = R"({"processType":1,"authType":1,"userId":"123",
-    "credentialData":[ {"credentialType":1,"credentialId":"104",
+    "credentialData": [{ "credentialType": 1, "credentialId": "104",
     "authCode":"10F9F0576E61730193D2052B7F771887124A68F1607EFCF7796C1491F834CD92",
-    "serverPk":"","pkInfoSignature":"","pkInfo":"","peerDeviceId":""}] })";
+    "serverPk":"","pkInfoSignature":"","pkInfo":"","peerDeviceId":"" }]})";
     std::shared_ptr<MockIpcClientProxy> mockInstance = std::make_shared<MockIpcClientProxy>();
     DeviceManagerImpl::GetInstance().ipcClientProxy_ = mockInstance;
     EXPECT_CALL(*mockInstance, SendRequest(testing::_, testing::_, testing::_))
@@ -2693,9 +2693,9 @@ HWTEST_F(DeviceManagerImplTest, ImportCredential_004, testing::ext::TestSize.Lev
 {
     std::string packName = "com.ohos.test";
     std::string credentialInfo = R"({"processType":1,"authType":1,"userId":"123",
-    "credentialData":[ {"credentialType":1,"credentialId":"104",
+    "credentialData": [{ "credentialType": 1, "credentialId": "104",
     "authCode":"10F9F0576E61730193D2052B7F771887124A68F1607EFCF7796C1491F834CD92",
-    "serverPk":"","pkInfoSignature":"","pkInfo":"","peerDeviceId":""} ]})";
+    "serverPk":"","pkInfoSignature":"","pkInfo":"","peerDeviceId":"" }]})";
     std::shared_ptr<MockIpcClientProxy> mockInstance = std::make_shared<MockIpcClientProxy>();
     DeviceManagerImpl::GetInstance().ipcClientProxy_ = mockInstance;
     EXPECT_CALL(*mockInstance, SendRequest(testing::_, testing::_, testing::_))