基于Spring Boot的测试中的上下文层次结构 [英] Context hierarchy in Spring Boot based tests

问题描述

我的Spring Boot应用程序是这样启动的:

My Spring Boot application is started like this:

new SpringApplicationBuilder()
  .sources(ParentCtxConfig.class)
  .child(ChildFirstCtxConfig.class)
  .sibling(ChildSecondCtxConfig.class)
  .run(args);

Config类用@SpringBootApplication注释.结果，我有一个根上下文和两个子Web上下文.

Config classes are annotated with @SpringBootApplication. As a result, I have one root context and two child web contexts.

我想编写集成测试，并且我希望在那里具有相同的上下文层次结构.我至少要使用其父级上下文(ParentCtxConfig.class)测试第一个子级上下文(用ChildFirstCtxConfig.class配置).我该如何实现?

I want to write integration test and I would like to have same context hierarchy there. I want at least to test first child context (configured with ChildFirstCtxConfig.class) with his parent context (ParentCtxConfig.class). How can I achieve that?

当前，我在测试中为ApplicationContext自动接线，以便对其进行检查.我在测试中有此类注释:

Currently I autowired ApplicationContext in my test so I can inspect it. I have this class annotation in the test:

@RunWith(SpringRunner.class)    
@SpringBootTest(classes = { ParentCtxConfig.class, ChildFirstCtxConfig.class }, webEnvironment = WebEnvironment.RANDOM_PORT)

但是会产生单个上下文，我想要父子层次结构. 我假设我应该使用@ContextHierarchy批注对测试进行批注.

but that will produce single context and I want parent-child hierarchy. I assume that I should annotate my test with @ContextHierarchy annotation.

将我的测试注释更改为此似乎与之前的示例完全相同:

Changing my test annotation to this seems to work exactly the same like previous example:

@RunWith(SpringRunner.class)    
@ContextConfiguration(classes = { ParentCtxConfig.class, ChildFirstCtxConfig.class })
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)

但是，如果我想介绍@ContextHierarchy，并且有这样的内容:

But if I want to introduce @ContextHierarchy and have something like this:

@RunWith(SpringRunner.class)
@ContextHierarchy({
        @ContextConfiguration(name = "root", classes = ParentCtxConfig.class),
        @ContextConfiguration(name = "child", classes = ChildFirstCtxConfig.class)
})
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)

上下文未启动，因为无法在子上下文中找到/自动装配在父上下文中定义的bean.设置loader = SpringBootContextLoader.class没有帮助.

context is not started because of bean defined in parent context can't be found/autowired in child context. Setting loader = SpringBootContextLoader.class doesn't help.

示例代码: GitHub

推荐答案

更新:这是@SpringBootTest的限制.准确移动，这是SpringBootContextLoader的限制.您可以通过使用配置父上下文的自定义上下文加载器或需要在spring.factories中列出其工厂的ContextCustomizer来解决此问题.这是后者的一个粗略示例:

This is a limitation of @SpringBootTest. Move accurately, it's a limitation of SpringBootContextLoader. You could work around it by using a custom context loader that configures the parent context or with a ContextCustomizer the factory for which would need to be listed in spring.factories. Here's a rough example of the latter:

org.springframework.test.context.ContextCustomizerFactory=\
com.alex.demo.ctx.HierarchyContextCustomizerFactory

src/test/java/com/alex/demo/ctx/HierarchyContextCustomizerFactory.java:

package com.alex.demo.ctx;

import java.util.List;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.test.context.ContextConfigurationAttributes;
import org.springframework.test.context.ContextCustomizer;
import org.springframework.test.context.ContextCustomizerFactory;
import org.springframework.test.context.MergedContextConfiguration;

public class HierarchyContextCustomizerFactory implements ContextCustomizerFactory {

    @Override
    public ContextCustomizer createContextCustomizer(Class<?> testClass,
            List<ContextConfigurationAttributes> configAttributes) {
        return new ContextCustomizer() {

            @Override
            public void customizeContext(ConfigurableApplicationContext context,
                    MergedContextConfiguration mergedConfig) {
                if (mergedConfig.getParentApplicationContext() != null) {
                    context.setParent(mergedConfig.getParentApplicationContext());
                }

            }

        };
    }

}

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