如何在android中对位图进行单元测试

androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.*;

@RunWith(AndroidJUnit4.class)
public class BitmapUnitTest {
    
    @Test
    public void testBitmapCreation() {
        Bitmap bitmap = BitmapFactory.decodeResource(
                InstrumentationRegistry.getInstrumentation().getContext().getResources(),
                R.drawable.my_image);
        assertNotNull(bitmap);
    }
    
    @Test
    public void testBitmapScaling() {
        Bitmap originalBitmap = BitmapFactory.decodeResource(
                InstrumentationRegistry.getInstrumentation().getContext().getResources(),
                R.drawable.my_image);
        Bitmap scaledBitmap = Bitmap.createScaledBitmap(originalBitmap, 100, 100, false);
        assertEquals(100, scaledBitmap.getWidth());
        assertEquals(100, scaledBitmap.getHeight());
    }
    
    // 其他测试方法...
}