junit test for javafx sample login form

Question

请使用junit

帮助测试此代码

@Override
public void start(Stage primaryStage) {

    primaryStage.setTitle("JavaFX Welcome");
    GridPane grid = new GridPane();
    grid.setAlignment(Pos.CENTER);
    grid.setHgap(10);
    grid.setVgap(10);
    grid.setPadding(new Insets(25, 25, 25, 25));

    Text scenetitle = new Text("Welcome");
    scenetitle.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));
    grid.add(scenetitle, 0, 0, 2, 1);

    Label userName = new Label("User Name:");
    grid.add(userName, 0, 1);

    TextField userTextField = new TextField();
    grid.add(userTextField, 1, 1);

    Label pw = new Label("Password:");
    grid.add(pw, 0, 2);

    PasswordField pwBox = new PasswordField();
    grid.add(pwBox, 1, 2);

  Label  status = new Label();
    status.setId( "status-label" );

    Button btn = new Button("Sign in");
    btn.setId("btn");
    HBox hbBtn = new HBox(10);
    hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
    hbBtn.getChildren().add(btn);
    grid.add(hbBtn, 1, 4);
    grid.add(status, 1, 8);



    final Text actiontarget = new Text();
    grid.add(actiontarget, 1, 6);
   // ImageView imageView = new ImageView(new Image(getClass().getResourceAsStream("person.png"), 0, 65, true, true));
    //grid.add(imageView, 0, 0,2,2);   

    //btn.setOnAction( ( e ) -> status.setText( computeStatus() ) );
    //private String computeStatus() {
    //  return "Name: " + userTextField.getText() + ", Password: " + pwBox.getText();
    //}
    btn.setOnAction(new EventHandler<ActionEvent>() {

        @Override
        public void handle(ActionEvent e) {
            actiontarget.setFill(Color.CORNFLOWERBLUE);
            actiontarget.setText("Name: " + userTextField.getText() + ", Password: " + pwBox.getText());

        }
    });


    Scene scene = new Scene(grid, 300, 275);
    primaryStage.setScene(scene);
    primaryStage.show();
}



public static void main(String[] args) {
    launch(args);
}