Mock modalPresentationStyle for ViewController unit tests

Author: tomaszpieczykolan

Diff for: Tests/UICoreTests/ViewControllerTests.swift

@@ -108,6 +108,24 @@ final class MockViewController: ViewController {
     XCTFail("Not implemented")
   }
 
+  var modalPresentationStyleGetter: () -> ModalPresentationStyle = {
+    XCTFail("Not implemented")
+    return .automatic
+  }
+
+  var modalPresentationStyleSetter: (ModalPresentationStyle) -> Void = { _ in
+    XCTFail("Not implemented")
+  }
+
+  override var modalPresentationStyle: ModalPresentationStyle {
+    get {
+      return modalPresentationStyleGetter()
+    }
+    set {
+      modalPresentationStyleSetter(newValue)
+    }
+  }
+
   override func viewDidLoad() {
     super.viewDidLoad()
     viewDidLoadBlock()