fix a bug, that prevented datasource from being updated when used in …

…context of performWithoutAnimations method of MemoryStorage.

CHANGELOG.md

@@ -3,6 +3,8 @@ All notable changes to this project will be documented in this file.
 
 # Next
 
+* Fixed a bug, that prevented datasource from being updated when `updateWithoutAnimations` method on `MemoryStorage` was used.
+
 ## [7.0.0](https://github.com/DenHeadless/DTModelStorage/releases/tag/7.0.0)
 
 ## [7.0.0-beta.1](https://github.com/DenHeadless/DTModelStorage/releases/tag/7.0.0-beta.1)

Source/Core/MemoryStorage+UpdateWithoutAnimations.swift

@@ -32,8 +32,20 @@ extension MemoryStorage
     open func updateWithoutAnimations(_ block: () -> Void)
     {
         let delegate = self.delegate
-        self.delegate = nil
+        let recordingDelegate = RecordingDelegate()
+        self.delegate = recordingDelegate
         block()
+        recordingDelegate.update?.applyDeferredDatasourceUpdates()
         self.delegate = delegate
     }
 }
+
+private class RecordingDelegate: StorageUpdating {
+    var update : StorageUpdate?
+
+    func storageDidPerformUpdate(_ update: StorageUpdate) {
+        self.update = update
+    }
+
+    func storageNeedsReloading() {}
+}

Tests/Specs/MemoryStorage/MemoryStorageSearchSpec.swift

@@ -92,9 +92,11 @@ class MemoryStorageSearchSpec: XCTestCase {
     }
 
     func testUpdateWithoutAnimations() {
+        storage.defersDatasourceUpdates = true
         storage.updateWithoutAnimations {
-            expect(self.storage.delegate).to(beNil())
+            storage.addItems([1,2])
         }
+        expect(self.storage.items(inSection: 0)?.flatMap { $0 as? Int} ?? []) == [1,2]
     }
 
     func testEmptySection()