Question 28

Explanation

Javadoc:

Using this annotation will disable full auto-configuration and instead apply only configuration relevant to MVC tests (i.e. @Controller, @ControllerAdvice, @JsonComponent, Converter/GenericConverter, Filter, WebMvcConfigurer and HandlerMethodArgumentResolver beans but not @Component, @Service or @Repository beans).

By default, tests annotated with @WebMvcTest will also auto-configure Spring Security and MockMvc.

https://docs.spring.io/spring-boot/api/java/org/springframework/boot/test/autoconfigure/web/servlet/WebMvcTest.html

You should use @WebMvcTest annotation when you want to write an Integration Test focused on your application's web layer. @WebMvcTest approach will create ApplicationContext that contains only web components and omits any other components that are not part of the web layer. If required for the test, other components can be mocked with the usage of @MockBean annotation or delivered by @Configuration an annotated class imported with the usage of @Import annotation.

@WebMvcTest supports two cases:

1. Single Controller Auto-Configuration – annotate test by providing Controller class - @WebMvcTest(CityController.class)

1. Multiple (All found) Controllers Auto-Configuration – annotate test with @WebMvcTest

@WebMvcTest annotation will auto-configure:

• Mock Mvc

• @Controller annotated class

• @ControllerAdvice annotated class

• @JsonComponent annotated class

• Converter annotated class

• GenericConverter annotated class

• Filter annotated class

• WebMvcConfigurer implemented class

• HandlerMethodArgumentResolver annotated class

Spring doc:

https://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/test/autoconfigure/web/servlet/WebMvcTest.html