Add integration test for gh-24110

spring-core/src/test/java/org/springframework/core/annotation/AnnotatedElementUtilsTests.java

@@ -516,6 +516,20 @@ class AnnotatedElementUtilsTests {
 		assertThat(isAnnotated(element, name)).isTrue();
 	}
 
+	@Test
+	void getMergedAnnotationWithImplicitAliasesWithDefaultsInMetaAnnotationOnComposedAnnotation() {
+		Class<?> element = ImplicitAliasesWithDefaultsClass.class;
+		String name = AliasesWithDefaults.class.getName();
+		AliasesWithDefaults annotation = getMergedAnnotation(element, AliasesWithDefaults.class);
+
+		assertThat(annotation).as("Should find @AliasesWithDefaults on " + element.getSimpleName()).isNotNull();
+		assertThat(annotation.a1()).as("a1").isEqualTo("ImplicitAliasesWithDefaults");
+		assertThat(annotation.a2()).as("a2").isEqualTo("ImplicitAliasesWithDefaults");
+
+		// Verify contracts between utility methods:
+		assertThat(isAnnotated(element, name)).isTrue();
+	}
+
 	@Test
 	void getMergedAnnotationAttributesWithInvalidConventionBasedComposedAnnotation() {
 		Class<?> element = InvalidConventionBasedComposedContextConfigClass.class;
@@ -1064,7 +1078,6 @@ class AnnotatedElementUtilsTests {
 		String[] xmlConfigFiles() default {};
 	}
 
-
 	@ContextConfig
 	@Retention(RetentionPolicy.RUNTIME)
 	@interface AliasedComposedContextConfig {
@@ -1105,6 +1118,27 @@ class AnnotatedElementUtilsTests {
 	@interface ComposedImplicitAliasesContextConfig {
 	}
 
+	@Retention(RetentionPolicy.RUNTIME)
+	@interface AliasesWithDefaults {
+
+		@AliasFor("a2")
+		String a1() default "AliasesWithDefaults";
+
+		@AliasFor("a1")
+		String a2() default "AliasesWithDefaults";
+	}
+
+	@Retention(RetentionPolicy.RUNTIME)
+	@AliasesWithDefaults
+	@interface ImplicitAliasesWithDefaults {
+
+		@AliasFor(annotation = AliasesWithDefaults.class, attribute = "a1")
+		String b1() default "ImplicitAliasesWithDefaults";
+
+		@AliasFor(annotation = AliasesWithDefaults.class, attribute = "a2")
+		String b2() default "ImplicitAliasesWithDefaults";
+	}
+
 	@ImplicitAliasesContextConfig
 	@Retention(RetentionPolicy.RUNTIME)
 	@interface TransitiveImplicitAliasesContextConfig {
@@ -1410,6 +1444,10 @@ class AnnotatedElementUtilsTests {
 	static class ImplicitAliasesContextConfigClass3 {
 	}
 
+	@ImplicitAliasesWithDefaults
+	static class ImplicitAliasesWithDefaultsClass {
+	}
+
 	@TransitiveImplicitAliasesContextConfig(groovy = "test.groovy")
 	static class TransitiveImplicitAliasesContextConfigClass {
 	}