Allow TestCompiler SourceFile to work with records

Update `SourceFile` to try a regex replace to make `record` files look
like regular classes.

Closes gh-29236

framework-platform/framework-platform.gradle

@@ -41,7 +41,7 @@ dependencies {
 		api("com.sun.xml.bind:jaxb-core:3.0.2")
 		api("com.sun.xml.bind:jaxb-impl:3.0.2")
 		api("com.sun.xml.bind:jaxb-xjc:3.0.2")
-		api("com.thoughtworks.qdox:qdox:2.0.1")
+		api("com.thoughtworks.qdox:qdox:2.0.2")
 		api("com.thoughtworks.xstream:xstream:1.4.19")
 		api("commons-io:commons-io:2.11.0")
 		api("de.bechte.junit:junit-hierarchicalcontextrunner:4.12.1")

spring-core-test/src/main/java/org/springframework/core/test/tools/SourceFile.java

@@ -171,6 +171,11 @@ public final class SourceFile extends DynamicFile implements AssertProvider<Sour
 		JavaProjectBuilder builder = new JavaProjectBuilder();
 		try {
 			JavaSource javaSource = builder.addSource(new StringReader(content));
+			if (javaSource.getClasses().isEmpty()) {
+				// QDOX doesn't let us inspect records yet, but we only need the
+				// class name so lets make the content look like a class
+				javaSource = builder.addSource(new StringReader(makeRecordsLookLikeClasses(content)));
+			}
 			Assert.state(javaSource.getClasses().size() == 1, "Source must define a single class");
 			JavaClass javaClass = javaSource.getClasses().get(0);
 			return (javaSource.getPackage() != null)
@@ -183,6 +188,10 @@ public final class SourceFile extends DynamicFile implements AssertProvider<Sour
 		}
 	}
 
+	private static String makeRecordsLookLikeClasses(String content) {
+		return content.replaceAll("record\\s(\\S+)\\(\\X+?\\)", "class $1");
+	}
+
 	/**
 	 * AssertJ {@code assertThat} support.
 	 * @deprecated use {@code assertThat(sourceFile)} rather than calling this

spring-core-test/src/test/java/org/springframework/core/test/tools/SourceFileTests.java

@@ -119,6 +119,33 @@ class SourceFileTests {
 		assertThat(sourceFile.getContent()).isEqualTo(HELLO_WORLD);
 	}
 
+	@Test
+	void getClassNameFromSimpleRecord() {
+		SourceFile sourceFile = SourceFile.of("""
+				package com.example.helloworld;
+
+				record HelloWorld(String name) {
+				}
+				""");
+		assertThat(sourceFile.getClassName()).isEqualTo("com.example.helloworld.HelloWorld");
+	}
+
+	@Test
+	void getClassNameFromMoreComplexRecord() {
+		SourceFile sourceFile = SourceFile.of("""
+				package com.example.helloworld;
+
+				public record HelloWorld(String name) {
+
+					String getFoo() {
+						return name();
+					}
+
+				}
+				""");
+		assertThat(sourceFile.getClassName()).isEqualTo("com.example.helloworld.HelloWorld");
+	}
+
 	/**
 	 * JavaPoet style API with a {@code writeTo} method.
 	 */