| /* |
| * Copyright (C) 2012 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.io; |
| |
| import com.google.common.collect.ImmutableSet; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| /** |
| * Tests for {@link Files#fileTreeViewer}. |
| * |
| * @author Colin Decker |
| */ |
| |
| public class FileTreeTraverserTest extends TestCase { |
| |
| private File dir; |
| |
| @Override |
| public void setUp() throws IOException { |
| dir = Files.createTempDir(); |
| } |
| |
| @Override |
| public void tearDown() throws IOException { |
| File[] files = dir.listFiles(); |
| if (files == null) { |
| return; |
| } |
| |
| // we aren't creating any files in subdirs |
| for (File file : files) { |
| file.delete(); |
| } |
| |
| dir.delete(); |
| } |
| |
| public void testFileTreeViewer_emptyDir() throws IOException { |
| assertDirChildren(); |
| } |
| |
| public void testFileTreeViewer_singleFile() throws IOException { |
| File file = newFile("test"); |
| assertDirChildren(file); |
| } |
| |
| public void testFileTreeViewer_singleDir() throws IOException { |
| File file = newDir("test"); |
| assertDirChildren(file); |
| } |
| |
| public void testFileTreeViewer_multipleFiles() throws IOException { |
| File a = newFile("a"); |
| File b = newDir("b"); |
| File c = newFile("c"); |
| File d = newDir("d"); |
| assertDirChildren(a, b, c, d); |
| } |
| |
| private File newDir(String name) throws IOException { |
| File file = new File(dir, name); |
| file.mkdir(); |
| return file; |
| } |
| |
| private File newFile(String name) throws IOException { |
| File file = new File(dir, name); |
| file.createNewFile(); |
| return file; |
| } |
| |
| private void assertDirChildren(File... files) { |
| assertEquals(ImmutableSet.copyOf(files), |
| ImmutableSet.copyOf(Files.fileTreeTraverser().children(dir))); |
| } |
| } |