Spring Boot 将配置类自动装配到 Junit 测试中

Question

I currently run into a problem with Junit testing in Spring Boot. I have an @Configuration class for which I want to test the @Bean methods. Because these methods are skipped during tests, I extracted the content of the configuration method to a protected method which will then be called inside the @Bean method of the @Configuration class. I did that so I can test the behaviour of the methods. Inside this method different @ConfigurationProperties are used to load some setups.

Now, in my ConfigurationTest class, I am mocking the ConfigurationProperties classes so I can test the correct behaviour of the @Bean method.

My problem is, that my Mockito mocks of the ConfigurationProperties classes always return null, when I am inside the @Bean method (more specifically inside the protected method that is called from the @Bean method). It feels like there is a problem with how I setup the @Configuration class. Currently I am autowiring it.

My question now is, how do I setup the @Configuration class correctly, so I can call its functions and mock the return values of the there used @ConfigurationProperties classes?

Thanks in advance!

Answer 1

Add @EnableConfigurationProperties(value=YourConfigurationProperties.class) to your test class. This will load the properties.