HDMICEC: Add equals test for HdmiCecMessage

Bug: 168713324
Test: atest HdmiCecMessageTest#testEqualsHdmiCecMessage
Change-Id: I31ddbed919ccf7a52824a0252c8d1db35bb6ebd9
Merged-In: I31ddbed919ccf7a52824a0252c8d1db35bb6ebd9

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();
+    }
+}