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Testing Hystrix Collapser Properties Configuration in Netflix/Hystrix

This test suite validates Hystrix request collapser properties within a Spring context environment. It extends basic collapser functionality testing while incorporating Spring-specific configurations and dependency injection mechanisms.

Test Coverage Overview

The test suite covers Spring-based configuration and integration of Hystrix request collapser properties.

Validates collapser property configurations in Spring context
Tests dependency injection of UserService components
Verifies proper inheritance of basic collapser functionality
Ensures Spring AOP integration with CGLIB proxies

Implementation Analysis

The implementation leverages Spring’s testing framework with JUnit integration. It utilizes Spring’s context configuration capabilities through annotations and configuration classes.

Uses @RunWith(SpringJUnit4ClassRunner.class) for Spring test context
Implements @ContextConfiguration for AOP and collapser configurations
Employs @Autowired for dependency injection
Extends BasicCollapserPropertiesTest for core functionality

Technical Details

Spring Framework testing infrastructure
JUnit test runner integration
CGLIB-based AOP configuration
Spring context configuration classes
Hystrix collapser property management
Dependency injection configuration

Best Practices Demonstrated

The test suite exemplifies proper Spring testing practices and configuration management.

Clear separation of concerns between basic and Spring-specific testing
Proper use of Spring testing annotations and configurations
Effective inheritance structure for test organization
Clean dependency management through Spring IoC

netflix/hystrix

hystrix-contrib/hystrix-javanica/src/test/java/com/netflix/hystrix/contrib/javanica/test/spring/configuration/collapser/CollapserPropertiesTest.java

            
/**
 * Copyright 2015 Netflix, Inc.
 * <p/>
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.netflix.hystrix.contrib.javanica.test.spring.configuration.collapser;

import com.netflix.hystrix.contrib.javanica.test.common.configuration.collapser.BasicCollapserPropertiesTest;
import com.netflix.hystrix.contrib.javanica.test.spring.conf.AopCglibConfig;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.context.annotation.Bean;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {AopCglibConfig.class, CollapserPropertiesTest.CollapserPropertiesTestConfig.class})
public class CollapserPropertiesTest extends BasicCollapserPropertiesTest {

    @Autowired
    private UserService userService;

    @Override
    protected UserService createUserService() {
        return userService;
    }


    @Configurable
    public static class CollapserPropertiesTestConfig {

        @Bean
        public BasicCollapserPropertiesTest.UserService userService() {
            return new UserService();
        }
    }
}