Include HandlerInterceptor beans in WebMvcTest slice

See gh-17600

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/web/servlet/WebMvcTypeExcludeFilter.java

@@ -35,6 +35,7 @@ import org.springframework.util.ClassUtils;
 import org.springframework.util.ObjectUtils;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.servlet.HandlerInterceptor;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 /**
@@ -65,6 +66,7 @@ class WebMvcTypeExcludeFilter extends StandardAnnotationCustomizableTypeExcludeF
 		includes.add(ErrorAttributes.class);
 		includes.add(Converter.class);
 		includes.add(GenericConverter.class);
+		includes.add(HandlerInterceptor.class);
 		for (String optionalInclude : OPTIONAL_INCLUDES) {
 			try {
 				includes.add(ClassUtils.forName(optionalInclude, null));

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/web/servlet/WebMvcTypeExcludeFilterTests.java

@@ -31,6 +31,7 @@ import org.springframework.stereotype.Controller;
 import org.springframework.stereotype.Repository;
 import org.springframework.stereotype.Service;
 import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.servlet.HandlerInterceptor;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -55,6 +56,7 @@ class WebMvcTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
 		assertThat(excludes(filter, ExampleWebSecurityConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleHandlerInterceptor.class)).isFalse();
 	}
 
 	@Test
@@ -68,6 +70,7 @@ class WebMvcTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
 		assertThat(excludes(filter, ExampleWebSecurityConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleHandlerInterceptor.class)).isFalse();
 	}
 
 	@Test
@@ -81,6 +84,7 @@ class WebMvcTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
 		assertThat(excludes(filter, ExampleWebSecurityConfigurer.class)).isTrue();
+		assertThat(excludes(filter, ExampleHandlerInterceptor.class)).isTrue();
 	}
 
 	@Test
@@ -93,6 +97,7 @@ class WebMvcTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleMessageConverter.class)).isFalse();
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isFalse();
+		assertThat(excludes(filter, ExampleHandlerInterceptor.class)).isFalse();
 	}
 
 	@Test
@@ -106,6 +111,7 @@ class WebMvcTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
 		assertThat(excludes(filter, ExampleWebSecurityConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleHandlerInterceptor.class)).isFalse();
 	}
 
 	private boolean excludes(WebMvcTypeExcludeFilter filter, Class<?> type) throws IOException {
@@ -175,4 +181,8 @@ class WebMvcTypeExcludeFilterTests {
 
 	}
 
+	static class ExampleHandlerInterceptor implements HandlerInterceptor {
+
+	}
+
 }