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Testing Dynamic Datasource Order Retrieval in SpringBoot-Labs

This test suite validates the OrderMapper functionality in a dynamic datasource environment using ShardingJDBC. It demonstrates integration testing of database operations with Spring Boot, focusing on order data retrieval operations.

Test Coverage Overview

The test coverage focuses on basic CRUD operations for the OrderMapper component, specifically testing the selectById method.

Tests order retrieval by ID functionality
Verifies database connectivity in a sharded environment
Validates mapper autowiring and dependency injection

Implementation Analysis

The testing approach utilizes Spring’s test framework with JUnit4 integration. It employs @SpringBootTest for full application context loading and @RunWith(SpringRunner.class) for Spring test execution.

The implementation demonstrates Spring Boot’s testing capabilities with database operations using MyBatis mapper injection.

Technical Details

JUnit 4 testing framework
Spring Boot Test context
MyBatis mapper integration
ShardingJDBC configuration
Autowired dependency injection

Best Practices Demonstrated

The test class exhibits several testing best practices including proper test isolation, clear test method naming, and Spring Boot test configuration.

Proper test class annotation setup
Clean dependency injection
Focused test scope
Clear test method naming convention

yudaocode/springboot-labs

lab-17/lab-17-dynamic-datasource-sharding-jdbc-01/src/test/java/dynamicdatasource/mapper/OrderMapperTest.java

            
package dynamicdatasource.mapper;

import cn.iocoder.springboot.lab17.dynamicdatasource.Application;
import cn.iocoder.springboot.lab17.dynamicdatasource.dataobject.OrderDO;
import cn.iocoder.springboot.lab17.dynamicdatasource.mapper.OrderMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = Application.class)
public class OrderMapperTest {

    @Autowired
    private OrderMapper orderMapper;

    @Test
    public void testSelectById() {
        OrderDO order = orderMapper.selectById(1);
        System.out.println(order);
    }

}