测试时自动连接@Service时出现UnsatisfiedDependencyException

Question

package it.euphoria.data.service;

import it.euphoria.data.entity.Customer;
import it.euphoria.data.entity.Seller;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;

import javax.validation.constraints.NotNull;
import java.util.Set;

public interface CustomerRepository extends JpaRepository<Customer, Long> {

    @Query("SELECT cust FROM Customer cust WHERE cust.seller = :seller")
    Set<Customer> getBySeller(@NotNull @Param("seller") Seller seller);

}

package it.euphoria.data.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CustomerService {

    private CustomerRepository customerRepository;

    @Autowired
    public CustomerService(CustomerRepository customerRepository) {
        this.customerRepository = customerRepository;
    }

    public CustomerRepository getCustomerRepository() {
        return customerRepository;
    }


}

如果在测试时自动连接CustomerRepository它工作得很好，但如果自动连接CustomerService则会得到UnsatisfiedDependencyException

这是customerrepository的工作测试：

package it.euphoria.data.service;

import it.euphoria.data.entity.Customer;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@DataJpaTest
public class CustomerRepositoryTest {
    @Autowired
    CustomerRepository customerRepository;        

    @Test
    public void getBySeller() {
        //test things...
    }
}

这是一个与customerservice仅有的区别：

package it.euphoria.data.service;

import it.euphoria.data.entity.Customer;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@DataJpaTest
public class CustomerRepositoryTest {
    @Autowired
    CustomerService customerService; //<-- The error is here    

    @Test
    public void getBySeller() {
        //test things...
    }
}

org.springframework.beans.factory.unsatisfieddependencyException：创建名为“it.euphoria.data.service.CustomerRepositoryTest”的bean时出错：通过字段“Customer Service”表示的不满足的依赖关系；嵌套异常为org.springframework.beans.factory.noSuchBeanDefinitionException：没有“it.euphoria.data.service.CustomerService”类型的合格bean可用：应至少有一个合格的自动候选bean。依赖项注释：{@org.SpringFramework.Beans.Factory.Annotation.AutoWired(required=true)}

我找到了这个问题和答案，但它没有解决问题。你能帮我理解一下我在这里做错了什么吗？

Answer 1

@datajpatest加载与数据库、读取存储库和更低级别的东西（数据源、事务管理器等）相关的bean。

这些测试用于检查SQL查询和驻留在DAO中的任何代码的正确性。

它在任何情况下都不加载整个应用程序，而只加载其中的某个部分。