Add support for `NSObjectProtocol` in ObjC mocking.

OCMock/StubRecorder.swift

@@ -68,6 +68,18 @@ public extension StubRecorder where OUT: NSObject {
     }
 }
 
+public extension StubRecorder where OUT: NSObjectProtocol {
+    func thenReturn(_ object: OUT) {
+        recorder.andReturn(object)
+    }
+}
+
+public extension StubRecorder where OUT == Optional<NSObjectProtocol> {
+    func thenReturn(_ object: OUT) {
+        recorder.andReturn(object)
+    }
+}
+
 public extension StubRecorder where OUT: CuckooOptionalType, OUT.Wrapped: NSObject {
     func thenReturn(_ object: OUT) {
         recorder.andReturn(object)

Tests/OCMock/ObjectiveExamplesTest.swift

@@ -0,0 +1,23 @@
+//
+//  ObjectiveExamplesTest.swift
+//  Cuckoo_OCMock-iOSTests
+//
+//  Created by Matyáš Kříž on 31/07/2020.
+//
+
+import XCTest
+import Cuckoo
+
+import CoreBluetooth
+
+class ObjectiveExamplesTest: XCTestCase {
+    func testProperties() {
+        let mock = objcStub(for: CBCentralManager.self) { stubber, mock in
+            stubber.when(mock.delegate).thenReturn(nil)
+        }
+
+        let g = mock.delegate
+
+        objcVerify(mock.delegate)
+    }
+}