public void SpeechTest()
        {
            var service   = new Mock <ITextToSpeechService>();
            var viewModel = new TextSpeechPageViewModel(service.Object);

            viewModel.Text = "Message";

            var command = viewModel.SpeechCommand;

            Assert.NotNull(command);
            Assert.True(command.CanExecute(null));
            command.Execute(null);

            service.Verify(m => m.Speech("Message"));
        }
        public void SpeechTest()
        {
            var viewModel = new TextSpeechPageViewModel();

            viewModel.Speech();
        }