HDMICEC: Override hashCode in HdmiDeviceInfo

Adds hashCode override and equals test for the class.

Bug: 168713324
Test: atest HdmiDeviceInfoTest
Change-Id: I77f7a4da113785573718a16895a988de7fff6b0b

3 files changed, 91 insertions, 0 deletions

diff --git a/core/java/android/hardware/hdmi/HdmiDeviceInfo.java b/core/java/android/hardware/hdmi/HdmiDeviceInfo.java
index 55b07268d201..6b2bab4f5a4f 100644
--- a/core/java/android/hardware/hdmi/HdmiDeviceInfo.java
+++ b/core/java/android/hardware/hdmi/HdmiDeviceInfo.java
@@ -513,4 +513,19 @@ public class HdmiDeviceInfo implements Parcelable {
                 && mDeviceId == other.mDeviceId
                 && mAdopterId == other.mAdopterId;
     }
+
+    @Override
+    public int hashCode() {
+        return java.util.Objects.hash(
+                mHdmiDeviceType,
+                mPhysicalAddress,
+                mPortId,
+                mLogicalAddress,
+                mDeviceType,
+                mVendorId,
+                mDevicePowerStatus,
+                mDisplayName,
+                mDeviceId,
+                mAdopterId);
+    }
 }
diff --git a/core/tests/hdmitests/Android.bp b/core/tests/hdmitests/Android.bp
index 2194d4b030ce..4755e0ea5259 100644
--- a/core/tests/hdmitests/Android.bp
+++ b/core/tests/hdmitests/Android.bp
@@ -19,6 +19,7 @@ android_test {
     static_libs: [
         "androidx.test.rules",
         "frameworks-base-testutils",
+        "guava-android-testlib",
         "truth-prebuilt",
     ],
     libs: ["android.test.runner"],
diff --git a/core/tests/hdmitests/src/android/hardware/hdmi/HdmiDeviceInfoTest.java b/core/tests/hdmitests/src/android/hardware/hdmi/HdmiDeviceInfoTest.java
new file mode 100755
index 000000000000..4c0de629c464
--- /dev/null
+++ b/core/tests/hdmitests/src/android/hardware/hdmi/HdmiDeviceInfoTest.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2020 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 android.hardware.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 HdmiDeviceInfo} */
+@RunWith(JUnit4.class)
+@SmallTest
+public class HdmiDeviceInfoTest {
+
+    @Test
+    public void testEquals() {
+        int logicalAddr = 0x00;
+        int phyAddr = 0x1000;
+        int portId = 1;
+        int deviceType = 0;
+        int vendorId = 0x123456;
+        String displayName = "test device";
+        int powerStatus = HdmiControlManager.POWER_STATUS_TRANSIENT_TO_STANDBY;
+        int deviceId = 3;
+        int adopterId = 2;
+
+        new EqualsTester()
+                .addEqualityGroup(new HdmiDeviceInfo())
+                .addEqualityGroup(
+                        new HdmiDeviceInfo(phyAddr, portId), new HdmiDeviceInfo(phyAddr, portId))
+                .addEqualityGroup(
+                        new HdmiDeviceInfo(phyAddr, portId, adopterId, deviceId),
+                        new HdmiDeviceInfo(phyAddr, portId, adopterId, deviceId))
+                .addEqualityGroup(
+                        new HdmiDeviceInfo(
+                                logicalAddr, phyAddr, portId, deviceType, vendorId, displayName),
+                        new HdmiDeviceInfo(
+                                logicalAddr, phyAddr, portId, deviceType, vendorId, displayName))
+                .addEqualityGroup(
+                        new HdmiDeviceInfo(
+                                logicalAddr,
+                                phyAddr,
+                                portId,
+                                deviceType,
+                                vendorId,
+                                displayName,
+                                powerStatus),
+                        new HdmiDeviceInfo(
+                                logicalAddr,
+                                phyAddr,
+                                portId,
+                                deviceType,
+                                vendorId,
+                                displayName,
+                                powerStatus))
+                .testEquals();
+    }
+}