Add error message for CollectionHandle init

PolymerLabs · Dec 2, 2020 · 0f0ab5a · 0f0ab5a
1 parent 2e44b13
commit 0f0ab5a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/java/arcs/core/entity/CollectionHandle.kt b/java/arcs/core/entity/CollectionHandle.kt
@@ -45,7 +45,9 @@ class CollectionHandle<T : Storable, R : Referencable>(
   private val storageAdapter = config.storageAdapter
 
   init {
-    check(spec.containerType == HandleContainerType.Collection)
+    check(spec.containerType == HandleContainerType.Collection) {
+      "Collection container type required for CollectionHandle $name, but got ${spec.containerType}."
+    }
   }
 
   // Filter out expired models.