Modify test and wrapper for ResolverActivity to run with async loading

Bug: 142659056
Test: This is the test.
Change-Id: I9805cc5f6c14c90c6d9a9b7c30cc3ee1b3ba8085

core/tests/coretests/src/com/android/internal/app/ResolverActivityTest.java

@@ -38,6 +38,7 @@ import android.view.View;
 import android.widget.RelativeLayout;
 
 import androidx.test.InstrumentationRegistry;
+import androidx.test.espresso.Espresso;
 import androidx.test.rule.ActivityTestRule;
 import androidx.test.runner.AndroidJUnit4;
 
@@ -82,6 +83,7 @@ public class ResolverActivityTest {
                 Mockito.isA(List.class))).thenReturn(resolvedComponentInfos);
 
         final ResolverWrapperActivity activity = mActivityRule.launchActivity(sendIntent);
+        Espresso.registerIdlingResources(activity.getLabelIdlingResource());
         waitForIdle();
 
         assertThat(activity.getAdapter().getCount(), is(2));
@@ -214,6 +216,7 @@ public class ResolverActivityTest {
                 Mockito.isA(List.class))).thenReturn(resolvedComponentInfos);
 
         final ResolverWrapperActivity activity = mActivityRule.launchActivity(sendIntent);
+        Espresso.registerIdlingResources(activity.getLabelIdlingResource());
         waitForIdle();
 
         // The other entry is filtered to the last used slot
@@ -251,6 +254,7 @@ public class ResolverActivityTest {
                 Mockito.isA(List.class))).thenReturn(resolvedComponentInfos);
 
         final ResolverWrapperActivity activity = mActivityRule.launchActivity(sendIntent);
+        Espresso.registerIdlingResources(activity.getLabelIdlingResource());
         waitForIdle();
 
         // The other entry is filtered to the other profile slot
@@ -296,6 +300,7 @@ public class ResolverActivityTest {
                 .thenReturn(resolvedComponentInfos.get(1).getResolveInfoAt(0));
 
         final ResolverWrapperActivity activity = mActivityRule.launchActivity(sendIntent);
+        Espresso.registerIdlingResources(activity.getLabelIdlingResource());
         waitForIdle();
 
         // The other entry is filtered to the other profile slot

core/tests/coretests/src/com/android/internal/app/ResolverWrapperActivity.java

@@ -21,6 +21,8 @@ import static org.mockito.Mockito.mock;
 import android.app.usage.UsageStatsManager;
 import android.content.pm.PackageManager;
 
+import androidx.test.espresso.idling.CountingIdlingResource;
+
 import java.util.function.Function;
 
 /*
@@ -29,6 +31,12 @@ import java.util.function.Function;
 public class ResolverWrapperActivity extends ResolverActivity {
     static final OverrideData sOverrides = new OverrideData();
     private UsageStatsManager mUsm;
+    private CountingIdlingResource mLabelIdlingResource =
+            new CountingIdlingResource("LoadLabelTask");
+
+    public CountingIdlingResource getLabelIdlingResource() {
+        return mLabelIdlingResource;
+    }
 
     ResolveListAdapter getAdapter() {
         return mAdapter;
@@ -64,6 +72,11 @@ public class ResolverWrapperActivity extends ResolverActivity {
         return super.getPackageManager();
     }
 
+    @Override
+    protected LoadLabelTask getLoadLabelTask(DisplayResolveInfo info, ViewHolder holder) {
+        return new LoadLabelWrapperTask(info, holder);
+    }
+
     /**
      * We cannot directly mock the activity created since instrumentation creates it.
      * <p>
@@ -83,4 +96,22 @@ public class ResolverWrapperActivity extends ResolverActivity {
             resolverListController = mock(ResolverListController.class);
         }
     }
+
+    class LoadLabelWrapperTask extends LoadLabelTask {
+
+        protected LoadLabelWrapperTask(DisplayResolveInfo dri, ViewHolder holder) {
+            super(dri, holder);
+        }
+
+        @Override
+        protected void onPreExecute() {
+            mLabelIdlingResource.increment();
+        }
+
+        @Override
+        protected void onPostExecute(CharSequence[] result) {
+            super.onPostExecute(result);
+            mLabelIdlingResource.decrement();
+        }
+    }
 }