1. 实例代码

package com.ruoyi.common.utils;

import org.junit.Rule;
import org.junit.jupiter.api.Test;
import org.junit.rules.ExpectedException;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import static org.junit.Assert.*;

class DateUtilsTest {

    /**
     * 根据传入的格式和时间字符串获取Date
     */
    @Test
    void should_throw_run_time_exception_with_wrong_input() {
        ExpectedException thrown= ExpectedException.none();
        thrown.expect(RuntimeException.class);
        DateUtils.dateTime(DateUtils.YYYY_MM_DD, "2020-11-28aaa");
    }
}

2. junit5

import static org.junit.jupiter.api.Assertions.*;
...

InspectBasicInfoRepository repository = mock(InspectBasicInfoRepository.class);
when(repository.getInspectIdBySubTaskId(anyLong())).thenReturn(Optional.empty());

QueryBasicService basicService = new QueryBasicServiceImpl(repository);
assertThrows(BusinessValidateException.class, () -> basicService.getInspectId(1L));