使用Mockito与JUnit的Java测试突然无法运行的问题求助

各位大佬好，我最近碰到个头疼的问题：我用Mockito和JUnit给我的石头剪刀布控制台应用写测试，之前一直运行得好好的，结果突然所有测试都没法正常执行了，而且完全没有任何错误提示！在IntelliJ IDEA里看，左下角的测试项都标着白色的"X"，我完全摸不着头绪不知道哪里出了问题。

先给大家看看我的pom.xml里的测试依赖配置：

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.2</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-junit-jupiter</artifactId>
    <version>5.14.2</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.testng</groupId>
    <artifactId>testng</artifactId>
    <version>RELEASE</version>
    <scope>test</scope>
</dependency>

下面是我的测试类代码：

package com.f_rafael.junitproject_lucas_moy;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.Random;
import java.util.Scanner;

import static org.mockito.Mockito.when;

@RunWith(MockitoJUnitRunner.class)
public class GameTest {
    public static final int OPTION_ROCK = 0;
    public static final int OPTION_PAPER = 1;
    public static final int OPTION_SCISSORS = 2;

    private ByteArrayOutputStream out;

    @InjectMocks
    private Game game;

    @Mock // 这个对象会被注入到带有@InjectMocks注解的对象中
    Scanner scanner;

    @Mock
    Random random;

    @Before
    public void setup(){
        out = new ByteArrayOutputStream();
        System.setOut(new PrintStream(out));
    }

    @org.junit.Test
    public void when_writeQuit_then_exitGame(){
        when(scanner.nextLine()).thenReturn("Quit");
        game.play();
        Assert.assertTrue(out.toString().contains("Let's play Rock"));
    }

    @org.junit.Test
    public void when_chooseRock_then_beatsScissors(){
        when(scanner.nextLine()).thenReturn("Rock").thenReturn("Quit");
        when(random.nextInt(3)).thenReturn(OPTION_SCISSORS);
        game.play();
        Assert.assertTrue(out.toString().contains("Computer chose scissors"));
        Assert.assertTrue(out.toString().contains("wins:1"));
    }

    @org.junit.Test
    public void when_chooseScissors_then_beatsPaper(){
        when(scanner.nextLine()).thenReturn("Scissors").thenReturn("Quit");
        when(random.nextInt(3)).thenReturn(OPTION_PAPER);
        game.play();
        Assert.assertTrue(out.toString().contains("Computer chose paper"));
        Assert.assertTrue(out.toString().contains("wins:1"));
    }

    @org.junit.Test
    public void when_choosePaper_then_beatsRock(){
        when(scanner.nextLine()).thenReturn("Paper").thenReturn("Quit");
        when(random.nextInt(3)).thenReturn(OPTION_ROCK);
        game.play();
        Assert.assertTrue(out.toString().contains("Computer chose rock"));
        Assert.assertTrue(out.toString().contains("wins:1"));
    }

    @Test
    public void when_chooseRockAndComputerChoosePaper_then_lose(){
        when(scanner.nextLine()).thenReturn("Rock").thenReturn("Quit");
        when(random.nextInt(3)).thenReturn(OPTION_PAPER);
        game.play();
        Assert.assertTrue(out.toString().contains("Computer chose paper"));
        Assert.assertTrue(out.toString().contains("loses:1"));
    }
}

这个应用就是个简单的控制台石头剪刀布游戏，我用的开发工具是IntelliJ IDEA。有没有大佬遇到过类似的情况，能给我指条明路吗？

内容来源于stack exchange