Merge "DM: Add test for virtual display unique ID prefix" into main

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertNull;

import static org.junit.Assert.assertTrue;

import static org.mockito.Mockito.when;

import android.content.Context;

import android.hardware.display.IVirtualDisplayCallback;

import android.hardware.display.VirtualDisplayConfig;

import android.os.IBinder;

import android.os.Process;

import androidx.test.ext.junit.runners.AndroidJUnit4;

import androidx.test.filters.SmallTest;

        assertNotNull(result);

    }

    @Test

    public void testCreatesVirtualDisplay_checkGeneratedDisplayUniqueIdPrefix() {

        VirtualDisplayConfig config = new VirtualDisplayConfig.Builder("test", /* width= */ 1,

                /* height= */ 1, /* densityDpi= */ 1).build();

        final String packageName = "testpackage";

        final String displayUniqueId = VirtualDisplayAdapter.generateDisplayUniqueId(

                packageName, Process.myUid(), config);

        DisplayDevice result = mVirtualDisplayAdapter.createVirtualDisplayLocked(

                mMockCallback, /* projection= */ null, /* ownerUid= */ 10,

                packageName, displayUniqueId, /* surface= */ null, /* flags= */ 0, config);

        assertNotNull(result);

        final String uniqueId = result.getUniqueId();

        assertTrue(uniqueId.startsWith(VirtualDisplayAdapter.UNIQUE_ID_PREFIX + packageName));

    }

    @Test

    public void testDoesNotCreateVirtualDisplayForSameCallback() {

        VirtualDisplayConfig config1 = new VirtualDisplayConfig.Builder("test", /* width= */ 1,