CS61B Junit无法使用求助！

本人在最近自学CS61B的时候在做Project1B的时候Junit无法使用，写的代码如下：
import org.junit.Test;
import static org.junit.Assert.*;

public class TestOffByOne {

    // You must use this CharacterComparator and not instantiate
    // new ones, or the autograder might be upset.
    static CharacterComparator offByOne = new OffByOne();

    // Your tests go here.
    @Test
    public void testEqualChars() {
        assertTrue(offByOne.equalChars('a', 'b'));
        /*assertTrue(offByOne.equalChars('A', 'b'));*/
        assertTrue(offByOne.equalChars('b', 'a'));
        assertTrue(offByOne.equalChars('&', '%'));
        assertFalse(offByOne.equalChars('a', 'c'));
        assertFalse(offByOne.equalChars('f', 'c'));
        assertFalse(offByOne.equalChars('&', '.'));
    }
    /*Uncomment this class once you've created your CharacterComparator interface and OffByOne class. **/
}

但是在run和debug的时候报错如下：
java.lang.AssertionError
at org.junit.Assert.fail(Assert.java:86)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.junit.Assert.assertFalse(Assert.java:64)
at org.junit.Assert.assertFalse(Assert.java:74)
at TestOffByOne.testEqualChars(TestOffByOne.java:17)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)


Process finished with exit code -1

本人在网上搜了很多，有的说是test的method第一个字母不能大写，或者说要在VM开-ea，但是我都没有问题，就很奇怪为什么用不了，求助各位！

你后来解决了吗ㅠㅠ 我也因为junit怎么都用不了崩溃了，明明jar文件都安装了，运行test就是不像老师一样显示哪些对了那些错