review: test: add regression test for toString() with complex comments

src/test/java/spoon/test/prettyprinter/ToStringCommentTest.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright (C) 2006-2018 INRIA and contributors
+ * Spoon - http://spoon.gforge.inria.fr/
+ *
+ * This software is governed by the CeCILL-C License under French law and
+ * abiding by the rules of distribution of free software. You can use, modify
+ * and/or redistribute the software under the terms of the CeCILL-C license as
+ * circulated by CEA, CNRS and INRIA at http://www.cecill.info.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL-C License for more details.
+ *
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL-C license and you accept the terms.
+ */
+package spoon.test.prettyprinter;
+
+import spoon.Launcher;
+import spoon.reflect.declaration.CtType;
+import spoon.testing.utils.ModelTest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+public class ToStringCommentTest {
+
+	@ModelTest("./src/test/resources/spoon/test/prettyprinter/toStringCommentTest")
+	public void testToStringWithComplexComments(Launcher launcher) {
+		// contract: toString() should not crash when processing complex comments
+		// This is a regression test for issue #3382 where cleanComment method could crash
+		var types = launcher.getFactory().Class().getAll();
+		assertThat(types).withFailMessage("Should load test resources").isNotEmpty();
+
+		for (CtType<?> type : types) {
+			assertThat(type.toString()).withFailMessage("toString() should not return null for type: " + type.getQualifiedName()).isNotNull();
+		}
+	}
+}