Add VDM internal API isValidVirtualDeviceId

Useful for other system services that already use
VDMInternal so they won't have to create a VDM instance.

Bug: 287269288
Test: presubmit
Change-Id: I827b54d1301514bc37efea3567bd2a7c36a46802
diff --git a/services/companion/java/com/android/server/companion/virtual/VirtualDeviceManagerService.java b/services/companion/java/com/android/server/companion/virtual/VirtualDeviceManagerService.java
index 9b78ed4..923728f 100644
--- a/services/companion/java/com/android/server/companion/virtual/VirtualDeviceManagerService.java
+++ b/services/companion/java/com/android/server/companion/virtual/VirtualDeviceManagerService.java
@@ -859,6 +859,11 @@
         }
 
         @Override
+        public boolean isValidVirtualDeviceId(int deviceId) {
+            return mImpl.isValidVirtualDeviceId(deviceId);
+        }
+
+        @Override
         public @Nullable String getPersistentIdForDevice(int deviceId) {
             if (deviceId == Context.DEVICE_ID_DEFAULT) {
                 return VirtualDeviceManager.PERSISTENT_DEVICE_ID_DEFAULT;
diff --git a/services/core/java/com/android/server/companion/virtual/VirtualDeviceManagerInternal.java b/services/core/java/com/android/server/companion/virtual/VirtualDeviceManagerInternal.java
index cecde55..823788f 100644
--- a/services/core/java/com/android/server/companion/virtual/VirtualDeviceManagerInternal.java
+++ b/services/core/java/com/android/server/companion/virtual/VirtualDeviceManagerInternal.java
@@ -21,6 +21,7 @@
 import android.companion.virtual.IVirtualDevice;
 import android.companion.virtual.VirtualDevice;
 import android.companion.virtual.sensor.VirtualSensor;
+import android.content.Context;
 import android.os.LocaleList;
 import android.util.ArraySet;
 
@@ -149,6 +150,14 @@
     public abstract @NonNull ArraySet<Integer> getDisplayIdsForDevice(int deviceId);
 
     /**
+     * Checks whether the passed {@code deviceId} is a valid virtual device ID or not.
+     *
+     * <p>{@link Context#DEVICE_ID_DEFAULT} is not valid as it is the ID of the default
+     * device which is not a virtual device.</p>
+     */
+    public abstract boolean isValidVirtualDeviceId(int deviceId);
+
+    /**
      * Returns the ID of the device which owns the display with the given ID.
      *
      * <p>In case the virtual display ID is invalid or doesn't belong to a virtual device, then
diff --git a/services/tests/servicestests/src/com/android/server/companion/virtual/VirtualDeviceManagerServiceTest.java b/services/tests/servicestests/src/com/android/server/companion/virtual/VirtualDeviceManagerServiceTest.java
index 9213601a..995d1f4 100644
--- a/services/tests/servicestests/src/com/android/server/companion/virtual/VirtualDeviceManagerServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/companion/virtual/VirtualDeviceManagerServiceTest.java
@@ -444,18 +444,27 @@
     }
 
     @Test
+    public void isDeviceIdValid_invalidDeviceId_returnsFalse() {
+        assertThat(mVdm.isValidVirtualDeviceId(DEVICE_ID_INVALID)).isFalse();
+        assertThat(mLocalService.isValidVirtualDeviceId(DEVICE_ID_INVALID)).isFalse();
+    }
+
+    @Test
     public void isDeviceIdValid_defaultDeviceId_returnsFalse() {
         assertThat(mVdm.isValidVirtualDeviceId(DEVICE_ID_DEFAULT)).isFalse();
+        assertThat(mLocalService.isValidVirtualDeviceId(DEVICE_ID_DEFAULT)).isFalse();
     }
 
     @Test
     public void isDeviceIdValid_validVirtualDeviceId_returnsTrue() {
         assertThat(mVdm.isValidVirtualDeviceId(mDeviceImpl.getDeviceId())).isTrue();
+        assertThat(mLocalService.isValidVirtualDeviceId(mDeviceImpl.getDeviceId())).isTrue();
     }
 
     @Test
     public void isDeviceIdValid_nonExistentDeviceId_returnsFalse() {
         assertThat(mVdm.isValidVirtualDeviceId(mDeviceImpl.getDeviceId() + 1)).isFalse();
+        assertThat(mLocalService.isValidVirtualDeviceId(mDeviceImpl.getDeviceId() + 1)).isFalse();
     }
 
     @Test