Small assertions improvements

See gh-34796

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/aop/AopAutoConfigurationTests.java

@@ -90,10 +90,7 @@ class AopAutoConfigurationTests {
 	void whenGlobalMethodSecurityIsEnabledAndAspectJIsNotAvailableThenClassProxyingIsStillUsedByDefault() {
 		this.contextRunner.withClassLoader(new FilteredClassLoader(Advice.class))
 			.withUserConfiguration(ExampleController.class, EnableGlobalMethodSecurityConfiguration.class)
-			.run((context) -> {
-				ExampleController exampleController = context.getBean(ExampleController.class);
-				assertThat(AopUtils.isCglibProxy(exampleController)).isTrue();
-			});
+			.run((context) -> assertThat(context).getBean(ExampleController.class).matches(AopUtils::isCglibProxy));
 	}
 
 	private ContextConsumer<AssertableApplicationContext> proxyTargetClassEnabled() {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/WebFluxAutoConfigurationTests.java

@@ -655,10 +655,8 @@ class WebFluxAutoConfigurationTests {
 		this.contextRunner.withConfiguration(AutoConfigurations.of(AopAutoConfiguration.class))
 			.withBean(ExceptionHandlerInterceptor.class)
 			.withPropertyValues("spring.webflux.problemdetails.enabled:true")
-			.run((context) -> {
-				assertThat(context).hasSingleBean(ProblemDetailsExceptionHandler.class);
-				assertThat(AopUtils.isCglibProxy(context.getBean(ProblemDetailsExceptionHandler.class))).isTrue();
-			});
+			.run((context) -> assertThat(context).getBean(ProblemDetailsExceptionHandler.class)
+				.matches(AopUtils::isCglibProxy));
 	}
 
 	@Test

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

@@ -998,10 +998,8 @@ class WebMvcAutoConfigurationTests {
 		this.contextRunner.withConfiguration(AutoConfigurations.of(AopAutoConfiguration.class))
 			.withBean(ExceptionHandlerInterceptor.class)
 			.withPropertyValues("spring.mvc.problemdetails.enabled:true")
-			.run((context) -> {
-				assertThat(context).hasSingleBean(ProblemDetailsExceptionHandler.class);
-				assertThat(AopUtils.isCglibProxy(context.getBean(ProblemDetailsExceptionHandler.class))).isTrue();
-			});
+			.run((context) -> assertThat(context).getBean(ProblemDetailsExceptionHandler.class)
+				.matches(AopUtils::isCglibProxy));
 	}
 
 	@Test

spring-boot-project/spring-boot-devtools/src/test/java/org/springframework/boot/devtools/restart/classloader/RestartClassLoaderTests.java

@@ -223,13 +223,11 @@ class RestartClassLoaderTests {
 				new URL[] { this.sampleJarFile.toURI().toURL() }, this.updatedFiles)) {
 			new ApplicationContextRunner().withClassLoader(restartClassLoader)
 				.withUserConfiguration(ProxyConfiguration.class)
-				.run((context) -> {
-					assertThat(context).hasNotFailed();
-					ExampleTransactional transactional = context.getBean(ExampleTransactional.class);
-					assertThat(AopUtils.isCglibProxy(transactional)).isTrue();
-					assertThat(transactional.getClass().getClassLoader())
-						.isEqualTo(ExampleTransactional.class.getClassLoader());
-				});
+				.run((context) -> assertThat(context).getBean(ExampleTransactional.class)
+					.matches(AopUtils::isCglibProxy)
+					.extracting(Object::getClass)
+					.extracting(Class::getClassLoader)
+					.isEqualTo(ExampleTransactional.class.getClassLoader()));
 		}
 	}