Add sealed class testCases

testlib/src/main/resources/java/removeunusedimports/SealedClassTestsFormatted.test

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2015-2023 the original author or authors.
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v2.0 which
+ * accompanies this distribution and is available at
+ *
+ * https://www.eclipse.org/legal/epl-v20.html
+ */
+
+package java.removeunusedimports;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import org.junit.jupiter.api.Test;
+
+class SealedClassTests extends AbstractJupiterTestEngineTests {
+
+	@Test
+	void sealedTestClassesAreTestClasses() {
+		executeTestsForClass(TestCase.class).testEvents() //
+				.assertStatistics(stats -> stats.finished(2).succeeded(1).failed(1));
+	}
+
+	sealed
+	abstract static class AbstractTestCase
+	permits TestCase
+	{
+
+		@Test
+		void succeedingTest() {
+			assertTrue(true);
+		}
+
+		@Test
+		void failingTest() {
+			fail("always fails");
+		}
+	}
+
+	static final class TestCase extends AbstractTestCase {
+	}
+
+}

testlib/src/main/resources/java/removeunusedimports/SealedClassTestsUnformatted.test

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2015-2023 the original author or authors.
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v2.0 which
+ * accompanies this distribution and is available at
+ *
+ * https://www.eclipse.org/legal/epl-v20.html
+ */
+
+package java.removeunusedimports;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import org.junit.jupiter.api.Test;
+import useless.project.UnusedClass;
+
+class SealedClassTests extends AbstractJupiterTestEngineTests {
+
+	@Test
+	void sealedTestClassesAreTestClasses() {
+		executeTestsForClass(TestCase.class).testEvents() //
+				.assertStatistics(stats -> stats.finished(2).succeeded(1).failed(1));
+	}
+
+	sealed
+	abstract static class AbstractTestCase
+	permits TestCase
+	{
+
+		@Test
+		void succeedingTest() {
+			assertTrue(true);
+		}
+
+		@Test
+		void failingTest() {
+			fail("always fails");
+		}
+	}
+
+	static final class TestCase extends AbstractTestCase {
+	}
+
+}

testlib/src/test/java/com/diffplug/spotless/java/RemoveUnusedImportsStep_withCleanthatJavaparserTest.java

@@ -32,7 +32,9 @@ void behavior() throws Exception {
 				.testResource("java/removeunusedimports/JavaCodeWithLicensePackageUnformatted.test", "java/removeunusedimports/JavaCodeWithLicensePackageFormatted.test")
 				.testResource("java/removeunusedimports/JavaCodeWithPackageUnformatted.test", "java/removeunusedimports/JavaCodeWithPackageFormatted.test")
 				.testResource("java/removeunusedimports/Jdk17TextBlockUnformatted.test", "java/removeunusedimports/Jdk17TextBlockFormatted.test")
-				.testResource("java/removeunusedimports/RevelcUnformatted.test", "java/removeunusedimports/RevelcFormatted.test");
+				.testResource("java/removeunusedimports/RevelcUnformatted.test", "java/removeunusedimports/RevelcFormatted.test")
+				// Sealed classes are introduced with JDK15: This syntax is not supported by javaParser: such files are not trimmed from unused imports (for now)
+				.testResource("java/removeunusedimports/SealedClassTestsUnformatted.test", "java/removeunusedimports/SealedClassTestsUnformatted.test");
 	}
 
 	@Test

testlib/src/test/java/com/diffplug/spotless/java/RemoveUnusedImportsStep_withGoogleJavaFormatTest.java

@@ -31,9 +31,11 @@ void behavior() throws Exception {
 				.testResource("java/removeunusedimports/JavaCodeWithLicenseUnformatted.test", "java/removeunusedimports/JavaCodeWithLicenseFormatted.test")
 				.testResource("java/removeunusedimports/JavaCodeWithLicensePackageUnformatted.test", "java/removeunusedimports/JavaCodeWithLicensePackageFormatted.test")
 				.testResource("java/removeunusedimports/JavaCodeWithPackageUnformatted.test", "java/removeunusedimports/JavaCodeWithPackageFormatted.test")
-				// GoogleFormat requires running over a JDK17 to handle JDK17 features
-				// .testResource("java/removeunusedimports/Jdk17TextBlockUnformatted.test", "java/removeunusedimports/Jdk17TextBlockFormatted.test")
-				.testResource("java/removeunusedimports/RevelcUnformatted.test", "java/removeunusedimports/RevelcFormatted.test");
+				.testResource("java/removeunusedimports/RevelcUnformatted.test", "java/removeunusedimports/RevelcFormatted.test")
+		// GoogleFormat requires running over a JDK17 to handle JDK17 features
+		// .testResource("java/removeunusedimports/Jdk17TextBlockUnformatted.test", "java/removeunusedimports/Jdk17TextBlockFormatted.test")
+		//.testResource("java/removeunusedimports/SealedClassTestsUnformatted.test", "java/removeunusedimports/SealedClassTestsFormatted.test")
+		;
 	}
 
 	@Test