       NotificationCenter.default.post(name: .init("Ping"), object: nil, userInfo: nil)
       return true
     }
-    self.expectation(forNotification: "Ping", object: nil, handler: nil)
+    self.expectation(forNotification: .init(rawValue: "Ping"), object: nil, handler: nil)
     XCTAssertTrue(self.navigator.open("myapp://ping"))
     self.waitForExpectations(timeout: 1, handler: nil)
   }

  }

  func testPresentURL_URLOpenHandler() {
    self.navigator.map("myapp://ping") { _ in return true }
    let fromViewController = UIViewController()
    let viewController = self.navigator.present("myapp://ping", from: fromViewController)
    XCTAssertNil(viewController)

  }

  func testPushURL_URLOpenHandler() {
    self.navigator.map("myapp://ping") { _, _ in return true }
    let navigationController = UINavigationController(rootViewController: UIViewController())
    let viewController = self.navigator.push("myapp://ping", from: navigationController, animated: false)
    XCTAssertNil(viewController)
