| // 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.unix; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertThrows; |
| |
| import com.google.common.testing.EqualsTester; |
| import com.google.devtools.build.lib.vfs.DigestHashFunction; |
| import com.google.devtools.build.lib.vfs.FileSystem; |
| import com.google.devtools.build.lib.vfs.Path; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * This tests how canonical paths and non-canonical paths are equal with each |
| * other, and also how paths from different filesystems behave with each other. |
| */ |
| @RunWith(JUnit4.class) |
| public class UnixPathEqualityTest { |
| |
| private FileSystem otherUnixFs; |
| private FileSystem unixFs; |
| |
| @Before |
| public final void initializeFileSystem() { |
| unixFs = new UnixFileSystem(DigestHashFunction.SHA256, /*hashAttributeName=*/ ""); |
| otherUnixFs = new UnixFileSystem(DigestHashFunction.SHA256, /*hashAttributeName=*/ ""); |
| assertThat(unixFs != otherUnixFs).isTrue(); |
| } |
| |
| private void assertTwoWayEquals(Object obj1, Object obj2) { |
| assertThat(obj1).isEqualTo(obj2); |
| new EqualsTester().addEqualityGroup(obj1, obj2).testEquals(); |
| } |
| |
| private void assertTwoWayNotEquals(Object obj1, Object obj2) { |
| assertThat(obj1.equals(obj2)).isFalse(); |
| assertThat(obj2.equals(obj1)).isFalse(); |
| } |
| |
| @Test |
| public void testPathsAreEqualEvenIfNotCanonical() { |
| // This path is already canonical, so there's no difference between |
| // the canonical / nonCanonical path, as far as equals is concerned |
| Path nonCanonical = unixFs.getPath("/a/canonical/unix/path"); |
| Path canonical = unixFs.getPath("/a/canonical/unix/path"); |
| assertTwoWayEquals(nonCanonical, canonical); |
| } |
| |
| @Test |
| public void testPathsAreNeverEqualWithStrings() { |
| // Make sure that paths aren't equal to plain old strings |
| Path nonCanonical = unixFs.getPath("/a/non/../canonical/unix/path"); |
| Path canonical = unixFs.getPath("/a/non/../canonical/unix/path"); |
| assertTwoWayNotEquals(nonCanonical, "/a/non/../canonical/unix/path"); |
| assertTwoWayNotEquals(canonical, "/a/non/../canonical/unix/path"); |
| } |
| |
| @Test |
| public void testCanonicalPathsFromDifferentFileSystemsAreNeverEqual() { |
| Path canonical = unixFs.getPath("/canonical/path"); |
| Path otherCanonical = otherUnixFs.getPath("/canonical/path"); |
| assertTwoWayNotEquals(canonical, otherCanonical); |
| } |
| |
| @Test |
| public void testNonCanonicalPathsFromDifferentFileSystemsAreNeverEqual() { |
| Path nonCanonical = unixFs.getPath("/non/canonical/path"); |
| Path otherNonCanonical = otherUnixFs.getPath("/non/canonical/path"); |
| assertTwoWayNotEquals(nonCanonical, otherNonCanonical); |
| } |
| |
| @Test |
| public void testCrossFilesystemStartsWithReturnsFalse() { |
| assertThat(unixFs.getPath("/a").startsWith(otherUnixFs.getPath("/b"))).isFalse(); |
| } |
| |
| @Test |
| public void testCrossFilesystemOperationsForbidden() throws Exception { |
| Path a = unixFs.getPath("/a"); |
| Path b = otherUnixFs.getPath("/b"); |
| |
| assertThrows(IllegalArgumentException.class, () -> a.renameTo(b)); |
| assertThrows(IllegalArgumentException.class, () -> a.relativeTo(b)); |
| assertThrows(IllegalArgumentException.class, () -> a.createSymbolicLink(b)); |
| } |
| } |