79 lines
2.9 KiB
Java
79 lines
2.9 KiB
Java
/*
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* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Unit test for Files.walkFileTree to test maxDepth parameter
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* @library ../..
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* @compile MaxDepth.java CreateFileTree.java
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* @run main MaxDepth
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*/
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import java.nio.file.*;
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import java.nio.file.attribute.*;
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import java.io.IOException;
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import java.util.*;
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public class MaxDepth {
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public static void main(String[] args) throws IOException {
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Path top = CreateFileTree.create();
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try {
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test(top);
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} finally {
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TestUtil.removeAll(top);
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}
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}
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static void test(final Path top) throws IOException {
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for (int i=0; i<5; i++) {
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Set<FileVisitOption> opts = Collections.emptySet();
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final int maxDepth = i;
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Files.walkFileTree(top, opts, maxDepth, new SimpleFileVisitor<Path>() {
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// compute depth based on relative path to top directory
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private int depth(Path file) {
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Path rp = file.relativize(top);
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return (rp.getFileName().toString().equals("")) ? 0 : rp.getNameCount();
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}
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@Override
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public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
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int d = depth(dir);
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if (d == maxDepth)
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throw new RuntimeException("Should not open directories at maxDepth");
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if (d > maxDepth)
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throw new RuntimeException("Too deep");
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return FileVisitResult.CONTINUE;
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}
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@Override
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public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
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int d = depth(file);
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if (d > maxDepth)
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throw new RuntimeException("Too deep");
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return FileVisitResult.CONTINUE;
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}
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});
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}
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}
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}
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