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我似乎无法模拟Mockito上的void方法。它给出了一个未完成的残片在这里检测到的错误。这是我的班级文件。使用Mockito嘲笑void方法
package com.twu.biblioteca;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.InputMismatchException;
import java.util.Scanner;
public class BibliotecaApp {
public static class IntegerAsker {
private final Scanner scanner;
private final PrintStream out;
public IntegerAsker(InputStream in, PrintStream out) {
scanner = new Scanner(in);
this.out = out;
}
public int ask(String message) {
out.print(message);
return scanner.nextInt();
}
}
public static int numberOfBooks = 0;
public static class book{
int serialNo;
String name;
String author;
int publication;
int checkoutstatus;
book(){
serialNo = -1;
name = null;
author = null;
publication = -1;
checkoutstatus = -1;
}
book(int serialNo,String name, String author, int publication){
this.serialNo = serialNo;
this.name = name;
this.author = author;
this.publication = publication;
this.checkoutstatus=checkoutstatus = 1;
}
}
public static int getBoundIntegerFromUser(IntegerAsker asker,String message,int lowerBound,int upperBound) {
int input;
try
{
input = asker.ask(message);
while(input>upperBound || input<lowerBound)
input = asker.ask("Select a valid option! ");
return input;
}
catch(InputMismatchException exception)
{
System.out.print("You have selected an invalid option! ");
}
return -1;
}
public static book[] booksList = new book[20];
public static String welcome(){
IntegerAsker asker = new IntegerAsker(System.in,System.out);
return "**** Welcome Customer! We are glad to have you at Biblioteca! ****";
}
public static void addBooks(){
book newBook1 = new book(1,"Head First Java","Bert Bates",2014);
booksList[1] = newBook1;
numberOfBooks += 1;
book newBook2 = new book(2,"1000 IT Quizzes","Dheeraj Malhotra",2009);
booksList[2] = newBook2;
numberOfBooks += 1;
book newBook3 = new book(3,"100 Shell Programs in Unix","Shivani Jain",2009);
booksList[3] = newBook3;
numberOfBooks += 1;
}
public static void mainMenu(IntegerAsker asker){
System.out.println("1 " + "List Books");
System.out.println("2" + " Checkout a Book");
System.out.println("3 " + "Quit");
int n = getBoundIntegerFromUser(asker,"Enter your choice. ",1,3);
mainMenuaction(n,asker);
}
public static void mainMenuaction(int n,IntegerAsker asker){
if(n==1){
showBooks();
mainMenu(asker);
}
else if(n==2){
checkout(asker);
}
else if(n==3){
return;
}
}
public static void showBooks(){
for(int i=1;i<=numberOfBooks;i++){
if(booksList[i].checkoutstatus!=0)
System.out.println(booksList[i].serialNo + ".\t" + booksList[i].name + "\t" + booksList[i].author + "\t" + booksList[i].publication);
}
}
public static void checkout(IntegerAsker asker){
int Input = asker.ask("Enter the serial numebr of the book that you want to checkout");
if(booksList[Input]!=null){
if(booksList[Input].checkoutstatus!=0){
booksList[Input].checkoutstatus=0;
System.out.println("Thank you! Enjoy the book");
}
else{
System.out.println("That book is not available.");
}
}
else{
System.out.println("That book is not available.");
}
mainMenu(asker);
}
public static void main(String[] args) {
System.out.println(welcome());
addBooks();
IntegerAsker asker = new IntegerAsker(System.in,System.out);
mainMenu(asker);
}
}
而且在这里不用我的测试文件 -
package com.twu.biblioteca;
import org.mockito.Mockito;
import org.mockito.Mockito.*;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.*;
public class ExampleTest {
BibliotecaApp test = Mockito.mock(BibliotecaApp.class);
@Test
public void welcometest() {
assertEquals("**** Welcome Customer! We are glad to have you at Biblioteca! ****",test.welcome());
}
@Test
public void addBooksTest(){
test.addBooks();
assertEquals("Head First Java",test.booksList[1].name);
assertEquals("Dheeraj Malhotra",test.booksList[2].author);
assertEquals(2009,test.booksList[3].publication);
}
@Test
public void getBoundIntegerFromUserTest(){
BibliotecaApp.IntegerAsker asker = mock(BibliotecaApp.IntegerAsker.class);
when(asker.ask("Enter your choice. ")).thenReturn(99);
when(asker.ask("Select a valid option! ")).thenReturn(1);
BibliotecaApp.getBoundIntegerFromUser(asker,"Enter your choice. ",1,2);
verify(asker).ask("Select a valid option! ");
}
@Test
public void mainMenuTest(){
BibliotecaApp.IntegerAsker asker = mock(BibliotecaApp.IntegerAsker.class);
when(asker.ask("Enter your choice. ")).thenReturn(3);
test.mainMenu(asker);
verify(test).mainMenuaction(1,asker);
}
@Test
public void checkoutTest(){
BibliotecaApp.IntegerAsker asker = mock(BibliotecaApp.IntegerAsker.class);
BibliotecaApp test = new BibliotecaApp();
BibliotecaApp mock = spy(test);
when(asker.ask("Enter the serial numebr of the book that you want to checkout")).thenReturn(2);
Mockito.doNothing().when(mock).mainMenu(asker);
test.addBooks();
test.checkout(asker);
assertEquals(0,test.booksList[2].checkoutstatus);
}
}
有人能说出什么我做错了吗？
的Mockito.doNothing（）是我给出的行错误！不好意思！ – Ritabrata
可能的重复[如何使模拟无效方法与mockito]（http://stackoverflow.com/questions/2276271/how-to-make-mock-to-void-methods-with-mockito） –
请考虑更新让测试类和测试类尽可能小的问题（一个静态方法，一个测试用例）。这会让问题更容易回答。 – avandeursen