diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index 04e8da1..75f4bb2 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -486,7 +486,9 @@
                 iconBitmapSize, fillResIconDpi, numDatabaseAllAppsColumns, dbFile};
     }
 
-    private void onConfigChanged(Context context) {
+    /** Updates IDP using the provided context. Notifies listeners of change. */
+    @VisibleForTesting
+    public void onConfigChanged(Context context) {
         Object[] oldState = toModelState();
 
         // Re-init grid