Migrate from FileSystemUtils.deleteRecursively

Update test to migrate away from the now deprecated FileSystemUtils.

spring-boot-samples/spring-boot-sample-integration/src/test/java/sample/integration/consumer/SampleIntegrationApplicationTests.java

@@ -19,6 +19,10 @@ package sample.integration.consumer;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.file.FileVisitOption;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Comparator;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
@@ -35,7 +39,6 @@ import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.core.io.DefaultResourceLoader;
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.support.ResourcePatternUtils;
-import org.springframework.util.FileSystemUtils;
 import org.springframework.util.StreamUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -51,14 +54,16 @@ public class SampleIntegrationApplicationTests {
 	private ConfigurableApplicationContext context;
 
 	@Before
-	public void deleteInputAndOutput() throws InterruptedException {
+	public void deleteInputAndOutput() throws InterruptedException, IOException {
 		deleteIfExists(new File("target/input"));
 		deleteIfExists(new File("target/output"));
 	}
 
-	private void deleteIfExists(File directory) throws InterruptedException {
+	private void deleteIfExists(File directory) throws InterruptedException, IOException {
 		if (directory.exists()) {
-			assertThat(FileSystemUtils.deleteRecursively(directory)).isTrue();
+			Files.walk(directory.toPath(), FileVisitOption.FOLLOW_LINKS)
+					.sorted(Comparator.reverseOrder()).map(Path::toFile)
+					.forEach(File::delete);
 		}
 	}