diff --git a/services/tests/servicestests/src/com/android/server/hdmi/HdmiCecMessageTest.java b/services/tests/servicestests/src/com/android/server/hdmi/HdmiCecMessageTest.java
new file mode 100755
index 0000000000000..036d08412e7ca
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/hdmi/HdmiCecMessageTest.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * 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 com.android.server.hdmi;
+
+import androidx.test.filters.SmallTest;
+
+import com.google.common.testing.EqualsTester;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for {@link HdmiCecMessage} class. */
+@SmallTest
+@RunWith(JUnit4.class)
+public class HdmiCecMessageTest {
+
+    @Test
+    public void testEqualsHdmiCecMessage() {
+        int source = 0;
+        int destination = 1;
+        int opcode = 0x7f;
+        byte[] params1 = {0x00, 0x1a, 0x2b, 0x3c};
+        byte[] params2 = {0x00, 0x1a, 0x2b, 0x3c, 0x4d};
+
+        new EqualsTester()
+                .addEqualityGroup(
+                        new HdmiCecMessage(source, destination, opcode, params1),
+                        new HdmiCecMessage(source, destination, opcode, params1))
+                .addEqualityGroup(new HdmiCecMessage(source, destination, opcode, params2))
+                .addEqualityGroup(new HdmiCecMessage(source + 1, destination, opcode, params1))
+                .addEqualityGroup(new HdmiCecMessage(source, destination + 1, opcode, params1))
+                .addEqualityGroup(new HdmiCecMessage(source, destination, opcode + 1, params1))
+                .testEquals();
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/hdmi/HdmiUtilsTest.java b/services/tests/servicestests/src/com/android/server/hdmi/HdmiUtilsTest.java
index 51b513f1d77b5..7bcfeb6656db9 100644
--- a/services/tests/servicestests/src/com/android/server/hdmi/HdmiUtilsTest.java
+++ b/services/tests/servicestests/src/com/android/server/hdmi/HdmiUtilsTest.java
@@ -125,6 +125,35 @@ public class HdmiUtilsTest {
                 .testEquals();
     }
 
+    @Test
+    public void testEqualsDeviceConfig() {
+        String name = "Name";
+
+        CodecSad expectedCodec1 = new CodecSad(Constants.AUDIO_CODEC_LPCM, "011a03");
+        CodecSad expectedCodec2 = new CodecSad(Constants.AUDIO_CODEC_DD, "0d0506");
+        CodecSad expectedCodec3 = new CodecSad(Constants.AUDIO_CODEC_LPCM, "010203");
+        CodecSad expectedCodec4 = new CodecSad(Constants.AUDIO_CODEC_DD, "040506");
+
+        List<CodecSad> list1 = new ArrayList();
+        list1.add(expectedCodec1);
+        list1.add(expectedCodec2);
+        list1.add(expectedCodec3);
+
+        List<CodecSad> list1Duplicate = new ArrayList(list1);
+
+        List<CodecSad> list2 = new ArrayList(list1);
+        list2.add(expectedCodec4);
+
+        new EqualsTester()
+                .addEqualityGroup(
+                        new HdmiUtils.DeviceConfig(name, list1),
+                        new HdmiUtils.DeviceConfig(name, list1Duplicate))
+                .addEqualityGroup(new HdmiUtils.DeviceConfig(name, list2))
+                .addEqualityGroup(new HdmiUtils.DeviceConfig("my" + name, list1))
+                .addEqualityGroup(new HdmiUtils.DeviceConfig("my" + name, list2))
+                .testEquals();
+    }
+
     @Test
     public void parseSampleXML() {
         List<DeviceConfig> config = new ArrayList<>();