Deprecation of ObjectiveC shivs

CoreStoreTests/BridgingTests.m

@@ -30,6 +30,10 @@
 
 @import CoreData;
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+
+
 // MARK: - BridgingTests
 
 @implementation BridgingTests
@@ -261,3 +265,5 @@
 }
 
 @end
+
+#pragma clang diagnostic pop

CoreStoreTests/ErrorTests.swift

@@ -31,6 +31,7 @@ import CoreStore
 
 // MARK: - ErrorTests
 
+@available(*, deprecated, message: "CoreStore Objective-C API will be removed soon.")
 final class ErrorTests: XCTestCase {
 
     @objc