GH-253 - Let @ApplicationModuleTest be meta-annotated with @SpringBootTest.

@ApplicationModuleTest is now meta-annotated with @SpringBootTest. This allows us to remove a couple of declarations that we actually had copied from it (such as the TestContextBootstrapper, the SpringExtension etc.)

The presence of the original annotation allow test-related auto-configuration to inspect @SprignBootTest for particular configuration. For example, we now alias the WebEnvironment to make it configurable for the test execution.

spring-modulith-integration-test/pom.xml

@@ -73,6 +73,12 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-webflux</artifactId>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 
 </project>

spring-modulith-integration-test/src/test/java/com/acme/myproject/moduleA/ApplicationModuleTestIntegrationTests.java

@@ -15,9 +15,16 @@
  */
 package com.acme.myproject.moduleA;
 
+import static org.assertj.core.api.Assertions.*;
+
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWebTestClient;
+import org.springframework.context.ApplicationContext;
 import org.springframework.modulith.test.ApplicationModuleTest;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.web.reactive.server.WebTestClient;
 
 /**
  * Integration tests for {@link ApplicationModuleTest}.
@@ -36,4 +43,19 @@ class ApplicationModuleTestIntegrationTests {
 		@Test // GH-173
 		void bootstrapsSecondLevelMestMethod() {}
 	}
+
+	// GH-253
+	@Nested
+	@ApplicationModuleTest(verifyAutomatically = false)
+	@ContextConfiguration
+	@AutoConfigureWebTestClient
+	class SampleTest {
+
+		@Autowired ApplicationContext context;
+
+		@Test
+		void registersTestWebClient() {
+			assertThat(context.getBean(WebTestClient.class)).isNotNull();
+		}
+	}
 }

spring-modulith-test/src/main/java/org/springframework/modulith/test/ApplicationModuleTest.java

@@ -27,13 +27,12 @@ import org.junit.jupiter.api.TestInstance.Lifecycle;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
 import org.springframework.boot.test.autoconfigure.filter.TypeExcludeFilters;
-import org.springframework.boot.test.context.SpringBootTestContextBootstrapper;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
 import org.springframework.core.annotation.AliasFor;
 import org.springframework.modulith.core.DependencyDepth;
-import org.springframework.test.context.BootstrapWith;
 import org.springframework.test.context.TestConstructor;
 import org.springframework.test.context.TestConstructor.AutowireMode;
-import org.springframework.test.context.junit.jupiter.SpringExtension;
 
 /**
  * Bootstraps the module containing the package of the test class annotated with {@link ApplicationModuleTest}. Will
@@ -49,10 +48,10 @@ import org.springframework.test.context.junit.jupiter.SpringExtension;
 @Documented
 @Inherited
 @Retention(RetentionPolicy.RUNTIME)
-@BootstrapWith(SpringBootTestContextBootstrapper.class)
+@SpringBootTest
 @TypeExcludeFilters(ModuleTypeExcludeFilter.class)
 @ImportAutoConfiguration(ModuleTestAutoConfiguration.class)
-@ExtendWith({ SpringExtension.class, PublishedEventsParameterResolver.class, ScenarioParameterResolver.class })
+@ExtendWith({ PublishedEventsParameterResolver.class, ScenarioParameterResolver.class })
 @TestInstance(Lifecycle.PER_CLASS)
 @TestConstructor(autowireMode = AutowireMode.ALL)
 public @interface ApplicationModuleTest {
@@ -77,6 +76,14 @@ public @interface ApplicationModuleTest {
 	 */
 	String[] extraIncludes() default {};
 
+	/**
+	 * The type of web environment to create when applicable. Defaults to {@link WebEnvironment#MOCK}.
+	 *
+	 * @return the type of web environment
+	 */
+	@AliasFor(annotation = SpringBootTest.class)
+	WebEnvironment webEnvironment() default WebEnvironment.MOCK;
+
 	public enum BootstrapMode {
 
 		/**