Mockito NoSuchElementException when() findById()

Question

请看我涉及到的代码存储库：import org.HappyRestApi.springREST.domain.BankDeposit;import org.springframework.data.jpa.repository.JpaRepository;public interface BankDepositRepositorie extends JpaRepository<BankDeposit,Long> {}服务：package org.HappyRestApi.springREST.services;import org.HappyRestApi.springREST.domain.BankDeposit;import org.HappyRestApi.springREST.repositories.BankDepositRepositorie;import org.springframework.stereotype.Service;import java.util.List;@Servicepublic class BankDepositServiceImpl implements BankDepositService {    private final BankDepositRepositorie bankDepositRepositorie;    public BankDepositServiceImpl(BankDepositRepositorie bankDepositRepositorie) {        this.bankDepositRepositorie = bankDepositRepositorie;    }    @Override    public BankDeposit findBankDepositById(Long id) {        return bankDepositRepositorie.findById(id).get();    }    @Override    public List<BankDeposit> findAllBankDeposit() {        return bankDepositRepositorie.findAll();    }    @Override    public void addBankDeposit(BankDeposit bankDeposit) {        this.bankDepositRepositorie.save(bankDeposit);    }    @Override    public void deleteBankDepositaById(Long id){        this.bankDepositRepositorie.deleteById(id);    }}测试：package org.HappyRestApi.springREST.services;import org.HappyRestApi.springREST.domain.BankDeposit;import org.HappyRestApi.springREST.domain.enums.Period;import org.HappyRestApi.springREST.repositories.BankDepositRepositorie;import org.junit.Assert;import org.junit.Test;import org.junit.jupiter.api.BeforeEach;import org.junit.runner.RunWith;    }

Answer 1

findById方法返回一个Optional，所以你可以尝试：

when(bankDepositRepositorie.findById(anyLong())).thenReturn(Optional.of(b1));

似乎 init() 方法没有运行，Junit4 和 Junit5 之间不匹配。@BeforeEach用。。。来代替@Before。