春季启动应用程序test.properties [英] Spring-boot application-test.properties

问题描述

我正在尝试使用junit对spring-boot应用程序进行单元测试.我将application-test.properties放在src/test/resources下.我有一个ApplicationConfiguration类，它读取application.properties.

I am trying to unit test the spring-boot application using junit. I have placed the application-test.properties under src/test/resources. I have a ApplicationConfiguration Class which reads the application.properties.

我的测试班级是这样的

@RunWith(SpringRunner.class)
@SpringBootTest(classes=ApplicationConfiguration.class)
@TestPropertySource(locations = "classpath:application-test.properties")
@ActiveProfiles("test")
   public class TestBuilders {
      @Autowired
      private ApplicationConfiguration properties;

当我尝试读取属性时，它始终为null.

When I try to read the properties, it is always null.

我的ApplicationConfiguration类看起来像这样

My ApplicationConfiguration Class looks something like this

@Configuration
@ConfigurationProperties
@PropertySources({
    @PropertySource("classpath:application.properties"),
    @PropertySource(value="file:config.properties", ignoreResourceNotFound = 
        true)})
public class ApplicationConfiguration{
    private xxxxx;
    private yyyyy;

我尝试了在google上找到的所有可能方法.请帮忙！ 预先感谢.

I tried all possible ways that I found on google.. No luck. Please help! Thanks in Advance.

推荐答案

问题是您的测试班级没有@EnableConfigurationProperties.
加载应用程序时，它从可能有@EnableConfigurationProperties的主类(具有@SpringBootApplication的主类)开始，因此在启动应用程序时可以工作. 而当您仅在此处指定的ApplicationConfiguration类中运行测试

The issue is you don't have @EnableConfigurationProperties on your test class.
When you load the application it start from main class(one which has @SpringBootApplication) where you might have @EnableConfigurationProperties and hence it works when you start the application.
Whereas when you are running the Test with only ApplicationConfiguration class as you have specified here

@SpringBootTest(classes=ApplicationConfiguration.class)

Spring不知道它必须启用配置属性，因此这些字段没有注入，因此为null.但是spring正在读取您的application-test.properties文件.只需将值直接注入测试类中即可确认

Spring doesn't know that it has to Enable Configuration Properties and hence the fields are not injecting and hence null. But spring is reading your application-test.properties file. This can be confirmed by just injecting the value directly in your test class

@Value("${xxxxx}")
private String xxxxx;

在此注入值.但是要使用ConfigurationProperties注入类，您需要使用@EnableConfigurationProperties

Here the value is injected. But to inject into a class with ConfigurationProperties you need to enable it using @EnableConfigurationProperties

将@EnableConfigurationProperties放在测试类中，一切正常.

Put @EnableConfigurationProperties on your test class and everythhing works fine.

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