[Test Week] Unit test for WidgetManagerHelperTest.

6 public methods covered.

Bug: 353303621
Test: Unit Test
Flag: EXEMPT unit test
Change-Id: I549d97f5b57f0e6e9af44bd1695d94ebfa0538f2

src/com/android/launcher3/widget/WidgetManagerHelper.java

@@ -32,6 +32,7 @@ import android.widget.RemoteViews;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
+import androidx.annotation.VisibleForTesting;
 
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
@@ -57,8 +58,13 @@ public class WidgetManagerHelper {
     final Context mContext;
 
     public WidgetManagerHelper(Context context) {
+        this(context, AppWidgetManager.getInstance(context));
+    }
+
+    @VisibleForTesting
+    public WidgetManagerHelper(Context context, AppWidgetManager appWidgetManager) {
         mContext = context;
-        mAppWidgetManager = AppWidgetManager.getInstance(context);
+        mAppWidgetManager = appWidgetManager;
     }
 
     /**