| // Copyright 2014 The Bazel Authors. All rights reserved. |
| // |
| // 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.devtools.build.lib.vfs; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| import com.google.devtools.build.lib.testutil.TestUtils; |
| import com.google.devtools.build.lib.vfs.util.FileSystems; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| import java.io.IOException; |
| |
| /** |
| * A test for {@link Path} in the context of {@link UnixFileSystem}. |
| */ |
| @RunWith(JUnit4.class) |
| public class UnixPathGetParentTest { |
| |
| private FileSystem unixFs; |
| private Path testRoot; |
| |
| @Before |
| public final void createTestRoot() throws Exception { |
| unixFs = FileSystems.getNativeFileSystem(); |
| testRoot = unixFs.getPath(TestUtils.tmpDir()).getRelative("UnixPathGetParentTest"); |
| FileSystemUtils.createDirectoryAndParents(testRoot); |
| } |
| |
| @After |
| public final void deleteTestRoot() throws Exception { |
| FileSystemUtils.deleteTree(testRoot); // (comment out during debugging) |
| } |
| |
| private Path getParent(String path) { |
| return unixFs.getPath(path).getParentDirectory(); |
| } |
| |
| @Test |
| public void testAbsoluteRootHasNoParent() { |
| assertNull(getParent("/")); |
| } |
| |
| @Test |
| public void testParentOfSimpleDirectory() { |
| assertEquals("/foo", getParent("/foo/bar").getPathString()); |
| } |
| |
| @Test |
| public void testParentOfDotDotInMiddleOfPathname() { |
| assertEquals("/", getParent("/foo/../bar").getPathString()); |
| } |
| |
| @Test |
| public void testGetPathDoesNormalizationWithoutIO() throws IOException { |
| Path tmp = testRoot.getChild("tmp"); |
| Path tmpWiz = tmp.getChild("wiz"); |
| |
| tmp.createDirectory(); |
| |
| // ln -sf /tmp /tmp/wiz |
| tmpWiz.createSymbolicLink(tmp); |
| |
| assertEquals(testRoot, tmp.getParentDirectory()); |
| |
| assertEquals(tmp, tmpWiz.getParentDirectory()); |
| |
| // Under UNIX, inode(/tmp/wiz/..) == inode(/). However getPath() does not |
| // perform I/O, only string operations, so it disagrees: |
| assertEquals(tmp, tmp.getRelative(new PathFragment("wiz/.."))); |
| } |
| } |