Use @⁠TempDir in FileSystemUtilsTests

Author: sbrannen

spring-core/src/test/java/org/springframework/util/FileSystemUtilsTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,19 +18,22 @@
 
 import java.io.File;
 
-import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
+ * Tests for {@link FileSystemUtils}.
+ *
  * @author Rob Harrop
+ * @author Sam Brannen
  */
 class FileSystemUtilsTests {
 
 	@Test
-	void deleteRecursively() throws Exception {
-		File root = new File("./tmp/root");
+	void deleteRecursively(@TempDir File tempDir) throws Exception {
+		File root = new File(tempDir, "root");
 		File child = new File(root, "child");
 		File grandchild = new File(child, "grandchild");
 
@@ -53,8 +56,8 @@ void deleteRecursively() throws Exception {
 	}
 
 	@Test
-	void copyRecursively() throws Exception {
-		File src = new File("./tmp/src");
+	void copyRecursively(@TempDir File tempDir) throws Exception {
+		File src = new File(tempDir, "src");
 		File child = new File(src, "child");
 		File grandchild = new File(child, "grandchild");
 
@@ -68,7 +71,7 @@ void copyRecursively() throws Exception {
 		assertThat(grandchild).exists();
 		assertThat(bar).exists();
 
-		File dest = new File("./dest");
+		File dest = new File(tempDir, "/dest");
 		FileSystemUtils.copyRecursively(src, dest);
 
 		assertThat(dest).exists();
@@ -78,17 +81,4 @@ void copyRecursively() throws Exception {
 		assertThat(src).doesNotExist();
 	}
 
-
-	@AfterEach
-	void tearDown() {
-		File tmp = new File("./tmp");
-		if (tmp.exists()) {
-			FileSystemUtils.deleteRecursively(tmp);
-		}
-		File dest = new File("./dest");
-		if (dest.exists()) {
-			FileSystemUtils.deleteRecursively(dest);
-		}
-	}
-
 }