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Validating Spring Boot Docker Context Loading in spring-boot-examples

This test suite validates the Spring Boot application context loading in a Docker Compose environment. It ensures proper initialization of the Spring container and verifies the basic setup of the application when running with Docker Compose and MySQL integration.

Test Coverage Overview

The test coverage focuses on validating the Spring Boot application context initialization within a containerized environment. Key functionality includes:

Spring context loading verification
Docker Compose environment compatibility
Basic application bootstrap testing
Integration readiness validation

Implementation Analysis

The testing approach utilizes Spring Boot’s testing framework with JUnit4 integration. The implementation leverages @RunWith(SpringRunner.class) and @SpringBootTest annotations to create a full application context, ensuring proper Spring Boot configuration in a Docker environment.

Technical Details

JUnit 4 testing framework
Spring Boot Test context
SpringRunner test executor
Docker Compose configuration validation
System output verification

Best Practices Demonstrated

The test suite demonstrates several testing best practices including proper test isolation, Spring Boot test configuration, and containerized testing approach. Notable practices include:

Clean test class organization
Proper Spring Boot test annotations
Container-aware testing setup
Integration-ready test structure

ityouknow/spring-boot-examples

2.x/dockercompose-springboot-mysql-nginx/app/src/test/java/com/neo/ComposeApplicationTests.java

            
package com.neo;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class ComposeApplicationTests {

	@Test
	public void contextLoads() {
		System.out.println("Hello Spring Boot Docker Compose!");
	}

}