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Testing Multi-Database MongoDB Integration in spring-boot-examples

This test suite validates multi-database MongoDB integration in a Spring Boot application. It demonstrates the configuration and interaction with two separate MongoDB databases through Spring Data repositories, ensuring proper data persistence and retrieval functionality.

Test Coverage Overview

The test suite covers essential MongoDB multi-database operations:

Database connection and repository autowiring for both primary and secondary databases
Data persistence operations using save() method
Data retrieval operations using findAll() method
Verification of independent database operations

Implementation Analysis

The testing approach utilizes Spring Boot’s test framework with JUnit integration. It implements @SpringBootTest for full application context loading and @RunWith(SpringRunner.class) for Spring test execution. The test demonstrates repository pattern implementation with distinct primary and secondary database configurations.

Technical Details

Testing tools and configuration:

Spring Boot Test framework
JUnit 4 testing framework
Spring Data MongoDB
Autowired repository injection
Multiple MongoDB database configurations

Best Practices Demonstrated

The test exhibits several testing best practices:

Clear separation of concerns between primary and secondary databases
Proper dependency injection using @Autowired
Integration test scope definition using @SpringBootTest
Structured test execution with setup and verification phases

ityouknow/spring-boot-examples

1.x/spring-boot-multi-mongodb/src/test/java/com/neo/model/repository/MuliDatabaseTest.java

            
package com.neo.model.repository;

import com.neo.model.repository.primary.PrimaryMongoObject;
import com.neo.model.repository.primary.PrimaryRepository;
import com.neo.model.repository.secondary.SecondaryMongoObject;
import com.neo.model.repository.secondary.SecondaryRepository;
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;

import java.util.List;

/**
 * Created by neo on 2017/5/6.
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class MuliDatabaseTest {

    @Autowired
    private PrimaryRepository primaryRepository;

    @Autowired
    private SecondaryRepository secondaryRepository;

    @Test
    public void TestSave() {

        System.out.println("************************************************************");
        System.out.println("测试开始");
        System.out.println("************************************************************");

        this.primaryRepository
                .save(new PrimaryMongoObject(null, "第一个库的对象"));

        this.secondaryRepository
                .save(new SecondaryMongoObject(null, "第二个库的对象"));

        List<PrimaryMongoObject> primaries = this.primaryRepository.findAll();
        for (PrimaryMongoObject primary : primaries) {
            System.out.println(primary.toString());
        }

        List<SecondaryMongoObject> secondaries = this.secondaryRepository.findAll();

        for (SecondaryMongoObject secondary : secondaries) {
            System.out.println(secondary.toString());
        }

        System.out.println("************************************************************");
        System.out.println("测试完成");
        System.out.println("************************************************************");
    }

}