Adapt to changes in DefaultGenerationContext

See https://github.com/spring-projects/spring-framework/issues/28877

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/web/server/ChildManagementContextInitializerAotTests.java

@@ -25,9 +25,6 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 
-import org.springframework.aot.generate.ClassNameGenerator;
-import org.springframework.aot.generate.DefaultGenerationContext;
-import org.springframework.aot.generate.InMemoryGeneratedFiles;
 import org.springframework.aot.test.generator.compile.CompileWithTargetClassAccess;
 import org.springframework.aot.test.generator.compile.TestCompiler;
 import org.springframework.boot.actuate.autoconfigure.endpoint.EndpointAutoConfiguration;
@@ -45,6 +42,7 @@ import org.springframework.context.ApplicationContextInitializer;
 import org.springframework.context.aot.ApplicationContextAotGenerator;
 import org.springframework.context.support.GenericApplicationContext;
 import org.springframework.javapoet.ClassName;
+import org.springframework.test.aot.generate.TestGenerationContext;
 import org.springframework.test.util.ReflectionTestUtils;
 import org.springframework.util.StringUtils;
 
@@ -76,14 +74,12 @@ class ChildManagementContextInitializerAotTests {
 								ServletManagementContextAutoConfiguration.class, WebEndpointAutoConfiguration.class,
 								EndpointAutoConfiguration.class));
 		contextRunner.withPropertyValues("server.port=0", "management.server.port=0").prepare((context) -> {
-			InMemoryGeneratedFiles generatedFiles = new InMemoryGeneratedFiles();
+			TestGenerationContext generationContext = new TestGenerationContext(TestTarget.class);
-			DefaultGenerationContext generationContext = new DefaultGenerationContext(
-					new ClassNameGenerator(TestTarget.class), generatedFiles);
 			ClassName className = new ApplicationContextAotGenerator().generateApplicationContext(
 					(GenericApplicationContext) context.getSourceApplicationContext(), generationContext);
 			generationContext.writeGeneratedContent();
 			TestCompiler compiler = TestCompiler.forSystem();
-			compiler.withFiles(generatedFiles).compile((compiled) -> {
+			compiler.withFiles(generationContext.getGeneratedFiles()).compile((compiled) -> {
 				ServletWebServerApplicationContext freshApplicationContext = new ServletWebServerApplicationContext();
 				TestPropertyValues.of("server.port=0", "management.server.port=0").applyTo(freshApplicationContext);
 				ApplicationContextInitializer<GenericApplicationContext> initializer = compiled

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/AotProcessor.java

@@ -101,7 +101,7 @@ public class AotProcessor {
 	/**
 	 * Trigger the processing of the application managed by this instance.
 	 */
-	public void process() {
+	public void process() throws IOException {
 		deleteExistingOutput();
 		AotProcessorHook hook = new AotProcessorHook();
 		SpringApplicationHooks.withHook(hook, this::callApplicationMainMethod);
@@ -142,7 +142,7 @@ public class AotProcessor {
 		}
 	}
 
-	private void performAotProcessing(GenericApplicationContext applicationContext) {
+	private void performAotProcessing(GenericApplicationContext applicationContext) throws IOException {
 		FileSystemGeneratedFiles generatedFiles = new FileSystemGeneratedFiles(this::getRoot);
 		DefaultGenerationContext generationContext = new DefaultGenerationContext(
 				new ClassNameGenerator(this.application), generatedFiles);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/AotProcessorTests.java

@@ -45,7 +45,7 @@ class AotProcessorTests {
 	}
 
 	@Test
-	void processApplicationInvokesRunMethod(@TempDir Path directory) {
+	void processApplicationInvokesRunMethod(@TempDir Path directory) throws IOException {
 		String[] arguments = new String[] { "1", "2" };
 		AotProcessor processor = new AotProcessor(SampleApplication.class, arguments, directory.resolve("source"),
 				directory.resolve("resource"), directory.resolve("class"), "com.example", "example");