diff --git a/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/TestOMDelegationTokenRequest.java b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/TestOMDelegationTokenRequest.java
new file mode 100644
index 000000000000..08c95f6e8f2e
--- /dev/null
+++ b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/TestOMDelegationTokenRequest.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 org.apache.hadoop.ozone.om.request.security;
+
+import org.apache.hadoop.hdds.conf.ConfigurationSource;
+import org.apache.hadoop.hdds.conf.OzoneConfiguration;
+import org.apache.hadoop.ozone.om.OMMetadataManager;
+import org.apache.hadoop.ozone.om.OMMetrics;
+import org.apache.hadoop.ozone.om.OmMetadataManagerImpl;
+import org.apache.hadoop.ozone.om.OzoneManager;
+import org.apache.hadoop.ozone.om.ratis.utils.OzoneManagerDoubleBufferHelper;
+import static org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_DB_DIRS;
+import org.junit.Rule;
+import org.junit.Before;
+import org.junit.After;
+import org.junit.rules.TemporaryFolder;
+import org.mockito.Mockito;
+import static org.mockito.Mockito.when;
+
+/**
+ * Base class for testing OM delegation token request.
+ */
+@SuppressWarnings("visibilitymodifier")
+public class TestOMDelegationTokenRequest {
+
+  @Rule
+  public TemporaryFolder folder = new TemporaryFolder();
+
+  protected OzoneManager ozoneManager;
+  protected OMMetrics omMetrics;
+  protected OMMetadataManager omMetadataManager;
+  protected ConfigurationSource conf;
+
+  // Just setting OzoneManagerDoubleBuffer which does nothing.
+  protected OzoneManagerDoubleBufferHelper ozoneManagerDoubleBufferHelper =
+      ((response, transactionIndex) -> {
+        return null;
+      });
+
+  @Before
+  public void setup() throws Exception {
+    ozoneManager = Mockito.mock(OzoneManager.class);
+
+    conf = new OzoneConfiguration();
+    ((OzoneConfiguration) conf)
+        .set(OZONE_OM_DB_DIRS, folder.newFolder().getAbsolutePath());
+    omMetadataManager = new OmMetadataManagerImpl((OzoneConfiguration) conf);
+    when(ozoneManager.getMetadataManager()).thenReturn(omMetadataManager);
+  }
+
+  @After
+  public void stop() {
+    Mockito.framework().clearInlineMocks();
+  }
+}
diff --git a/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/TestOMGetDelegationTokenRequest.java b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/TestOMGetDelegationTokenRequest.java
new file mode 100644
index 000000000000..df0fcb9fd19a
--- /dev/null
+++ b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/TestOMGetDelegationTokenRequest.java
@@ -0,0 +1,221 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 org.apache.hadoop.ozone.om.request.security;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import com.google.common.base.Optional;
+import java.util.UUID;
+import org.apache.hadoop.ozone.om.response.OMClientResponse;
+import org.apache.hadoop.ozone.security.OzoneDelegationTokenSecretManager;
+import org.apache.hadoop.ozone.security.OzoneTokenIdentifier;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.Type;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.Status;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos
+    .OMRequest;
+import static org.apache.hadoop.ozone.security.OzoneTokenIdentifier.KIND_NAME;
+import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.security.proto.SecurityProtos.GetDelegationTokenRequestProto;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.hadoop.io.Text;
+import org.mockito.Mockito;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.Mockito.when;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * The class tests OMGetDelegationTokenRequest.
+ */
+public class TestOMGetDelegationTokenRequest extends
+    TestOMDelegationTokenRequest {
+
+  private OzoneDelegationTokenSecretManager secretManager;
+  private OzoneTokenIdentifier identifier;
+  private Token<OzoneTokenIdentifier> token;
+  private Text tester;
+  private OMRequest originalRequest;
+  private OMRequest modifiedRequest;
+  private OMGetDelegationTokenRequest omGetDelegationTokenRequest;
+  final private String checkResponse = "";
+
+  @Before
+  public void setupGetDelegationToken() {
+    secretManager = Mockito.mock(OzoneDelegationTokenSecretManager.class);
+    when(ozoneManager.getDelegationTokenMgr()).thenReturn(secretManager);
+
+    setupToken();
+    setupRequest();
+  }
+
+  private void setupRequest() {
+    GetDelegationTokenRequestProto getDelegationTokenRequestProto =
+        GetDelegationTokenRequestProto.newBuilder()
+        .setRenewer(identifier.getRenewer().toString())
+        .build();
+
+    originalRequest = OMRequest.newBuilder()
+        .setClientId(UUID.randomUUID().toString())
+        .setCmdType(Type.GetDelegationToken)
+        .setGetDelegationTokenRequest(getDelegationTokenRequestProto)
+        .build();
+
+    omGetDelegationTokenRequest =
+        new OMGetDelegationTokenRequest(originalRequest);
+
+    modifiedRequest = null;
+  }
+
+  private void verifyUnchangedRequest() {
+    Assert.assertEquals(
+        originalRequest.getCmdType(),
+        modifiedRequest.getCmdType());
+    Assert.assertEquals(
+        originalRequest.getClientId(),
+        modifiedRequest.getClientId());
+  }
+
+  private void setupToken() {
+    tester = new Text("tester");
+    identifier = new OzoneTokenIdentifier(tester, tester, tester);
+    identifier.setOmCertSerialId("certID");
+    identifier.setOmServiceId("");
+
+    byte[] password = RandomStringUtils
+        .randomAlphabetic(10)
+        .getBytes(StandardCharsets.UTF_8);
+    Text service = new Text("OMTest:9862");
+    token = new Token<>(identifier.getBytes(), password, KIND_NAME, service);
+  }
+
+  private OMClientResponse setValidateAndUpdateCache() throws IOException {
+    modifiedRequest = omGetDelegationTokenRequest.preExecute(ozoneManager);
+    OMGetDelegationTokenRequest reqPreExecuted =
+        new OMGetDelegationTokenRequest(modifiedRequest);
+
+    long txLogIndex = 1L;
+    return reqPreExecuted.validateAndUpdateCache(
+        ozoneManager, txLogIndex, ozoneManagerDoubleBufferHelper);
+  }
+
+  @Test
+  public void testPreExecuteWithNonNullToken() throws Exception {
+    /* Let token of ozoneManager.getDelegationToken() is nonNull. */
+    when(ozoneManager.getDelegationToken(tester)).thenReturn(token);
+
+    long tokenRenewInterval = 1000L;
+    when(ozoneManager.getDelegationTokenMgr().getTokenRenewInterval())
+        .thenReturn(tokenRenewInterval);
+
+    modifiedRequest = omGetDelegationTokenRequest.preExecute(ozoneManager);
+    verifyUnchangedRequest();
+
+    long originalInterval = originalRequest.getUpdateGetDelegationTokenRequest()
+        .getTokenRenewInterval();
+    long renewInterval = modifiedRequest.getUpdateGetDelegationTokenRequest()
+        .getTokenRenewInterval();
+    Assert.assertNotEquals(originalInterval, renewInterval);
+    Assert.assertEquals(tokenRenewInterval, renewInterval);
+
+    /* In preExecute(), if the token is nonNull
+     we set GetDelegationTokenResponse with response. */
+    Assert.assertNotEquals(checkResponse,
+        modifiedRequest.getUpdateGetDelegationTokenRequest()
+            .getGetDelegationTokenResponse()
+            .toString());
+    Assert.assertNotNull(modifiedRequest
+        .getUpdateGetDelegationTokenRequest()
+        .getGetDelegationTokenResponse());
+  }
+
+  @Test
+  public void testPreExecuteWithNullToken() throws Exception {
+    /* Let token of ozoneManager.getDelegationToken() is Null. */
+    when(ozoneManager.getDelegationToken(tester)).thenReturn(null);
+
+    modifiedRequest = omGetDelegationTokenRequest.preExecute(ozoneManager);
+    verifyUnchangedRequest();
+
+    /* In preExecute(), if the token is null
+     we do not set GetDelegationTokenResponse with response. */
+    Assert.assertEquals(checkResponse,
+        modifiedRequest.getUpdateGetDelegationTokenRequest()
+            .getGetDelegationTokenResponse()
+            .toString());
+  }
+
+  @Test
+  public void testValidateAndUpdateCacheWithNonNullToken() throws Exception {
+    /* Let token of ozoneManager.getDelegationToken() is nonNull. */
+    when(ozoneManager.getDelegationToken(tester)).thenReturn(token);
+
+    /* Mock OzoneDelegationTokenSecretManager#updateToken() to
+     * get specific renewTime for verifying OMClientResponse returned by
+     * validateAndUpdateCache(). */
+    long renewTime = 1000L;
+    when(secretManager.updateToken(
+        any(Token.class), any(OzoneTokenIdentifier.class), anyLong()))
+        .thenReturn(renewTime);
+
+    OMClientResponse clientResponse = setValidateAndUpdateCache();
+
+    Optional<Long> responseRenewTime = Optional.fromNullable(
+        omMetadataManager.getDelegationTokenTable().get(identifier));
+    Assert.assertEquals(Optional.of(renewTime), responseRenewTime);
+
+    Assert.assertEquals(Status.OK, clientResponse.getOMResponse().getStatus());
+  }
+
+  @Test
+  public void testValidateAndUpdateCacheWithNullToken() throws Exception {
+    /* Let token of ozoneManager.getDelegationToken() is Null. */
+    when(ozoneManager.getDelegationToken(tester)).thenReturn(null);
+
+    OMClientResponse clientResponse = setValidateAndUpdateCache();
+
+    boolean hasResponse = modifiedRequest.getUpdateGetDelegationTokenRequest()
+        .getGetDelegationTokenResponse().hasResponse();
+    Assert.assertFalse(hasResponse);
+
+    Optional<Long> responseRenewTime = Optional.fromNullable(
+        omMetadataManager.getDelegationTokenTable().get(identifier));
+    Assert.assertEquals(Optional.absent(), responseRenewTime);
+
+    Assert.assertEquals(Status.OK, clientResponse.getOMResponse().getStatus());
+  }
+
+  @Test
+  public void testValidateAndUpdateCacheWithException() throws Exception {
+    /* Create a token that causes InvalidProtocolBufferException by
+     * OzoneTokenIdentifier#readProtoBuf(). */
+    Token<OzoneTokenIdentifier> exceptToken = new Token<>();
+    when(ozoneManager.getDelegationToken(tester)).thenReturn(exceptToken);
+
+    OMClientResponse clientResponse = setValidateAndUpdateCache();
+
+    boolean hasResponse = modifiedRequest.getUpdateGetDelegationTokenRequest()
+        .getGetDelegationTokenResponse().hasResponse();
+    Assert.assertTrue(hasResponse);
+
+    Assert.assertNotEquals(Status.OK,
+        clientResponse.getOMResponse().getStatus());
+  }
+}
diff --git a/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/package-info.java b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/package-info.java
new file mode 100644
index 000000000000..4a72a86c81fa
--- /dev/null
+++ b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/request/security/package-info.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 contains test classes for delegation token requests.
+ */
+package org.apache.hadoop.ozone.om.request.security;
\ No newline at end of file
diff --git a/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/TestOMDelegationTokenResponse.java b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/TestOMDelegationTokenResponse.java
new file mode 100644
index 000000000000..816e696ea0c1
--- /dev/null
+++ b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/TestOMDelegationTokenResponse.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 org.apache.hadoop.ozone.om.response.security;
+
+import org.apache.hadoop.hdds.conf.ConfigurationSource;
+import org.apache.hadoop.hdds.conf.OzoneConfiguration;
+import org.apache.hadoop.hdds.utils.db.BatchOperation;
+import org.apache.hadoop.ozone.om.OMConfigKeys;
+import org.apache.hadoop.ozone.om.OMMetadataManager;
+import org.apache.hadoop.ozone.om.OmMetadataManagerImpl;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.rules.TemporaryFolder;
+import java.io.IOException;
+
+/** Base test class for delegation token response. */
+@SuppressWarnings("visibilitymodifier")
+public class TestOMDelegationTokenResponse {
+
+  @Rule
+  public TemporaryFolder folder = new TemporaryFolder();
+
+  protected ConfigurationSource conf;
+  protected OMMetadataManager omMetadataManager;
+  protected BatchOperation batchOperation;
+
+  @Before
+  public void setup() throws IOException {
+    conf = new OzoneConfiguration();
+    ((OzoneConfiguration) conf).set(OMConfigKeys.OZONE_OM_DB_DIRS,
+        folder.newFolder().getAbsolutePath());
+    omMetadataManager = new OmMetadataManagerImpl((OzoneConfiguration) conf);
+    batchOperation = omMetadataManager.getStore().initBatchOperation();
+  }
+}
diff --git a/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/TestOMGetDelegationTokenResponse.java b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/TestOMGetDelegationTokenResponse.java
new file mode 100644
index 000000000000..df90d7ec8931
--- /dev/null
+++ b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/TestOMGetDelegationTokenResponse.java
@@ -0,0 +1,95 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 org.apache.hadoop.ozone.om.response.security;
+
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.ozone.om.request.security.OMGetDelegationTokenRequest;
+import org.apache.hadoop.ozone.security.OzoneTokenIdentifier;
+import org.apache.hadoop.security.proto.SecurityProtos.GetDelegationTokenRequestProto;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos
+    .OMRequest;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos
+    .OMResponse;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.UpdateGetDelegationTokenRequest;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.Type;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.Status;
+import java.io.IOException;
+import java.util.UUID;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/** The class tests OMGetDelegationTokenResponse. */
+public class TestOMGetDelegationTokenResponse extends
+    TestOMDelegationTokenResponse {
+
+  private OzoneTokenIdentifier identifier;
+  private UpdateGetDelegationTokenRequest updateGetDelegationTokenRequest;
+
+  @Before
+  public void setupGetDelegationToken() {
+    Text tester = new Text("tester");
+    identifier = new OzoneTokenIdentifier(tester, tester, tester);
+    identifier.setOmCertSerialId("certID");
+
+    GetDelegationTokenRequestProto getDelegationTokenRequestProto =
+        GetDelegationTokenRequestProto.newBuilder()
+        .setRenewer(identifier.getRenewer().toString())
+        .build();
+
+    OMRequest omRequest = OMRequest.newBuilder()
+        .setClientId(UUID.randomUUID().toString())
+        .setCmdType(Type.GetDelegationToken)
+        .setGetDelegationTokenRequest(getDelegationTokenRequestProto)
+        .build();
+
+    updateGetDelegationTokenRequest =
+        new OMGetDelegationTokenRequest(omRequest)
+            .getOmRequest()
+            .getUpdateGetDelegationTokenRequest();
+  }
+
+  @Test
+  public void testAddToDBBatch() throws IOException {
+    OMResponse omResponse = OMResponse.newBuilder()
+        .setCmdType(Type.GetDelegationToken)
+        .setStatus(Status.OK)
+        .setSuccess(true)
+        .setGetDelegationTokenResponse(
+            updateGetDelegationTokenRequest
+                .getGetDelegationTokenResponse())
+        .build();
+
+    long renewTime = 1000L;
+    OMGetDelegationTokenResponse getDelegationTokenResponse =
+        new OMGetDelegationTokenResponse(identifier, renewTime, omResponse);
+
+    getDelegationTokenResponse.addToDBBatch(omMetadataManager, batchOperation);
+    omMetadataManager.getStore().commitBatchOperation(batchOperation);
+
+    long rowNumInTable = 1;
+    long rowNumInTokenTable = omMetadataManager
+        .countRowsInTable(omMetadataManager.getDelegationTokenTable());
+    Assert.assertEquals(rowNumInTable, rowNumInTokenTable);
+
+    long renewTimeInTable = omMetadataManager.getDelegationTokenTable()
+        .get(identifier);
+    Assert.assertEquals(renewTime, renewTimeInTable);
+  }
+}
diff --git a/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/package-info.java b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/package-info.java
new file mode 100644
index 000000000000..1c197c6f4dc9
--- /dev/null
+++ b/hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/response/security/package-info.java
@@ -0,0 +1,21 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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 contains test classes for delegation token responses.
+ */
+package org.apache.hadoop.ozone.om.response.security;