Properly handle class reference

Previously, a condition on a class targeting an inner class would
generate an invalid String representation of it. Unfortunately, the
`toString` representation misses the `$` sign between the outer class
and the inner class name.

This commit post-processes the values to generate the appropriate
representation.

Closes gh-11282

spring-boot-tools/spring-boot-autoconfigure-processor/src/main/java/org/springframework/boot/autoconfigureprocessor/AutoConfigureAnnotationProcessor.java

@@ -166,17 +166,24 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 				Object value = entry.getValue().getValue();
 				if (value instanceof List) {
 					for (AnnotationValue annotationValue : (List<AnnotationValue>) value) {
-						result.add(annotationValue.getValue());
+						result.add(processValue(annotationValue.getValue()));
 					}
 				}
 				else {
-					result.add(value);
+					result.add(processValue(value));
 				}
 			}
 		}
 		return result;
 	}
 
+	private Object processValue(Object value)  {
+		if (value instanceof DeclaredType) {
+			return getQualifiedName(((DeclaredType) value).asElement());
+		}
+		return value;
+	}
+
 	private String getQualifiedName(Element element) {
 		if (element != null) {
 			TypeElement enclosingElement = getEnclosingTypeElement(element.asType());

spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/AutoConfigureAnnotationProcessorTests.java

@@ -54,12 +54,12 @@ public class AutoConfigureAnnotationProcessorTests {
 	@Test
 	public void annotatedClass() throws Exception {
 		Properties properties = compile(TestClassConfiguration.class);
-		System.out.println(properties);
 		assertThat(properties).hasSize(3);
 		assertThat(properties).containsEntry(
 				"org.springframework.boot.autoconfigureprocessor."
 						+ "TestClassConfiguration.ConditionalOnClass",
-				"java.io.InputStream,java.io.OutputStream");
+				"java.io.InputStream,org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration$Nested");
 		assertThat(properties).containsKey(
 				"org.springframework.boot.autoconfigureprocessor.TestClassConfiguration");
 		assertThat(properties).containsKey(

spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestClassConfiguration.java

@@ -16,15 +16,13 @@
 
 package org.springframework.boot.autoconfigureprocessor;
 
-import java.io.OutputStream;
-
 /**
  * Test configuration with an annotated class.
  *
  * @author Madhura Bhave
  */
 @TestConfiguration
-@TestConditionalOnClass(name = "java.io.InputStream", value = OutputStream.class)
+@TestConditionalOnClass(name = "java.io.InputStream", value = TestClassConfiguration.Nested.class)
 public class TestClassConfiguration {
 
 	@TestAutoConfigureOrder