Is it possible to implement automatic checks without relying on communication protocols?

Yes, automated checks can be implemented without relying on communication protocols, for example, by using local unit tests and integration tests that verify application logic without network interaction. In iOS, this is often achieved with mocks and stubs that simulate the behavior of external services or components. This approach allows testing business logic and UI without a real connection to a server or other systems.

Example of using mocks in Swift with XCTest:

class NetworkServiceMock: NetworkServiceProtocol {
    func fetchData(completion: (Data?) -> Void) {
        let dummyData = Data() // simulated data
        completion(dummyData)
    }
}

func testFetchData() {
    let mockService = NetworkServiceMock()
    let viewModel = ViewModel(networkService: mockService)
    viewModel.loadData()
    XCTAssertTrue(viewModel.dataLoaded)
}