From 77ede3b5c71291b529815e8dd68e6d443526e809 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Helge=20He=C3=9F?= <devteam@zeezide.de>
Date: Sat, 30 Sep 2023 17:30:09 +0200
Subject: [PATCH] Add a default configuration if none was provided

...
---
 .../Container/NSPersistentContainer+Data.swift     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Sources/ManagedModels/Container/NSPersistentContainer+Data.swift b/Sources/ManagedModels/Container/NSPersistentContainer+Data.swift
index ea043fd..b2ca366 100644
--- a/Sources/ManagedModels/Container/NSPersistentContainer+Data.swift
+++ b/Sources/ManagedModels/Container/NSPersistentContainer+Data.swift
@@ -34,11 +34,17 @@ extension NSPersistentContainer {
       return merged ?? model
     }()
     
+    var configurations = configurations
+    if configurations.isEmpty {
+      configurations.append(Self.defaultConfiguration)
+    }
+    
     // TBD: Is this correct? It is the container name, not the configuration
     //      name?
     let firstName = configurations.first(where: { !$0.name.isEmpty })?.name
                  ?? "ManagedModels"
 
+    assert(!configurations.isEmpty)
     self.init(
       name: firstName,
       managedObjectModel: combinedModel
@@ -66,6 +72,14 @@ extension NSPersistentContainer {
     viewContext.automaticallyMergesChangesFromParent = true
   }
 
+  private static var defaultConfiguration : ModelConfiguration {
+    .init(
+      path: nil, name: nil, schema: nil,
+      isStoredInMemoryOnly: false, allowsSave: true,
+      groupAppContainerIdentifier: nil, cloudKitContainerIdentifier: nil,
+      groupContainer: .none, cloudKitDatabase: .none
+    )
+  }
 }
 
 public extension NSPersistentContainer {