Try to force the JVM to release file handles on Windows

Author: marcphilipp

platform-tooling-support-tests/src/test/java/platform/tooling/support/tests/ToolProviderTests.java

@@ -33,9 +33,11 @@
 import java.util.spi.ToolProvider;
 import java.util.stream.StreamSupport;
 
+import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.OS;
 import org.junit.jupiter.api.extension.DisabledOnOpenJ9;
 import org.junit.jupiter.api.io.TempDir;
 
@@ -76,6 +78,14 @@ static void prepareLocalLibraryDirectoryWithJUnitPlatformModules() {
 		}
 	}
 
+	@AfterAll
+	static void triggerReleaseOfFileHandlesOnWindows() throws Exception {
+		if (OS.current() == OS.WINDOWS) {
+			System.gc();
+			Thread.sleep(1_000);
+		}
+	}
+
 	@Test
 	void findAndRunJUnitOnTheClassPath() {
 		try (var loader = new URLClassLoader("junit", urls(lib), ClassLoader.getPlatformClassLoader())) {