FileUtils.delete does not recurse via symlinks

Change-Id: I134cfbda47f4d252fec1a16034e2e78b73cd5081

org.eclipse.jgit.java7.test/src/org/eclipse/jgit/util/FileUtils7Test.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2013, Robin Rosenberg <robin.rosenberg@dewire.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.util;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class FileUtils7Test {
+
+	private final File trash = new File(new File("target"), "trash");
+
+	@Before
+	public void setUp() throws Exception {
+		FileUtils.delete(trash, FileUtils.RECURSIVE | FileUtils.RETRY | FileUtils.SKIP_MISSING);
+		assertTrue(trash.mkdirs());
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		FileUtils.delete(trash, FileUtils.RECURSIVE | FileUtils.RETRY);
+	}
+
+	@Test
+	public void testDeleteSymlinkToDirectoryDoesNotDeleteTarget()
+			throws IOException {
+		FS fs = FS.DETECTED;
+		File dir = new File(trash, "dir");
+		File file = new File(dir, "file");
+		File link = new File(trash, "link");
+		FileUtils.mkdirs(dir);
+		FileUtils.createNewFile(file);
+		fs.createSymLink(link, "dir");
+		FileUtils.delete(link, FileUtils.RECURSIVE);
+		assertFalse(link.exists());
+		assertTrue(dir.exists());
+		assertTrue(file.exists());
+	}
+}