Back to Repositories

Testing Nacos Discovery Server Address Resolution in Spring Cloud Alibaba

This test suite validates the Nacos Discovery Properties configuration in Spring Cloud Alibaba, specifically focusing on server address resolution when addresses are specified at both discovery and global levels. The tests ensure proper property precedence and configuration handling in the Nacos service discovery implementation.

Test Coverage Overview

The test coverage focuses on the server address configuration mechanism in Nacos Discovery Properties. It specifically verifies:

Server address resolution when addresses are configured at both discovery and global levels
Property precedence validation ensuring discovery-level configuration takes priority
Integration with Spring Boot’s configuration system

Implementation Analysis

The testing approach utilizes Spring Boot’s test framework with JUnit Jupiter to validate configuration behavior. It employs SpringBootTest annotation with specific property configurations to simulate real-world scenarios. The implementation leverages Spring’s dependency injection and auto-configuration mechanisms to test the NacosDiscoveryProperties bean.

Technical Details

Key technical components include:

JUnit Jupiter test framework
Spring Boot Test infrastructure
AssertJ assertions library
Auto-configuration imports for Nacos service registry and discovery
Custom test configuration class with required Spring Cloud dependencies

Best Practices Demonstrated

The test demonstrates several testing best practices:

Isolated test configuration using a nested static configuration class
Clear test property configuration through SpringBootTest annotation
Specific assertion testing using AssertJ
Proper separation of concerns between test setup and execution
Effective use of Spring Boot’s test utilities

alibaba/spring-cloud-alibaba

spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/NacosDiscoveryPropertiesServerAddressBothLevelTests.java

            
/*
 * Copyright 2013-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.cloud.nacos;

import com.alibaba.cloud.nacos.discovery.NacosDiscoveryClientConfiguration;
import com.alibaba.cloud.nacos.registry.NacosServiceRegistryAutoConfiguration;
import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.client.serviceregistry.AutoServiceRegistrationConfiguration;
import org.springframework.context.annotation.Configuration;

import static com.alibaba.cloud.nacos.NacosDiscoveryPropertiesServerAddressBothLevelTests.TestConfig;
import static org.assertj.core.api.Assertions.assertThat;

/**
 * @author <a href="mailto:[email protected]">lyuzb</a>
 */
@SpringBootTest(classes = TestConfig.class, properties = {
		"spring.application.name=app",
		"spring.cloud.nacos.discovery.server-addr=321.321.321.321:8848",
		"spring.cloud.nacos.server-addr=123.123.123.123:8848" })
public class NacosDiscoveryPropertiesServerAddressBothLevelTests {

	@Autowired
	private NacosDiscoveryProperties properties;

	@Test
	public void testGetServerAddr() {
		assertThat(properties.getServerAddr()).isEqualTo("321.321.321.321:8848");
	}

	@Configuration
	@EnableAutoConfiguration
	@ImportAutoConfiguration({ AutoServiceRegistrationConfiguration.class,
			NacosDiscoveryClientConfiguration.class,
			NacosServiceRegistryAutoConfiguration.class })
	public static class TestConfig {

	}

}