| // 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 com.google.common.truth.Truth.assertThat; |
| import static com.google.devtools.build.lib.testutil.MoreAsserts.assertThrows; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link PathTrie}. */ |
| @RunWith(JUnit4.class) |
| public class PathTrieTest { |
| @Test |
| public void empty() { |
| PathTrie<Integer> pathTrie = new PathTrie<>(); |
| assertThat(pathTrie.get(PathFragment.EMPTY_FRAGMENT)).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/x"))).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/x/y"))).isNull(); |
| } |
| |
| @Test |
| public void simpleBranches() { |
| PathTrie<Integer> pathTrie = new PathTrie<>(); |
| pathTrie.put(PathFragment.create("/a"), 1); |
| pathTrie.put(PathFragment.create("/b"), 2); |
| |
| assertThat(pathTrie.get(PathFragment.EMPTY_FRAGMENT)).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/a"))).isEqualTo(1); |
| assertThat(pathTrie.get(PathFragment.create("/a/b"))).isEqualTo(1); |
| assertThat(pathTrie.get(PathFragment.create("/a/b/c"))).isEqualTo(1); |
| assertThat(pathTrie.get(PathFragment.create("/b"))).isEqualTo(2); |
| assertThat(pathTrie.get(PathFragment.create("/b/c"))).isEqualTo(2); |
| } |
| |
| @Test |
| public void nestedDirectories() { |
| PathTrie<Integer> pathTrie = new PathTrie<>(); |
| pathTrie.put(PathFragment.create("/a/b/c"), 3); |
| assertThat(pathTrie.get(PathFragment.EMPTY_FRAGMENT)).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/a"))).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/a/b"))).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/a/b/c"))).isEqualTo(3); |
| assertThat(pathTrie.get(PathFragment.create("/a/b/c/d"))).isEqualTo(3); |
| |
| pathTrie.put(PathFragment.create("/a"), 1); |
| assertThat(pathTrie.get(PathFragment.EMPTY_FRAGMENT)).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/b"))).isNull(); |
| assertThat(pathTrie.get(PathFragment.create("/a"))).isEqualTo(1); |
| assertThat(pathTrie.get(PathFragment.create("/a/b"))).isEqualTo(1); |
| assertThat(pathTrie.get(PathFragment.create("/a/b/c"))).isEqualTo(3); |
| assertThat(pathTrie.get(PathFragment.create("/a/b/c/d"))).isEqualTo(3); |
| |
| pathTrie.put(PathFragment.ROOT_FRAGMENT, 0); |
| assertThat(pathTrie.get(PathFragment.EMPTY_FRAGMENT)).isEqualTo(0); |
| assertThat(pathTrie.get(PathFragment.create("/b"))).isEqualTo(0); |
| assertThat(pathTrie.get(PathFragment.create("/a"))).isEqualTo(1); |
| assertThat(pathTrie.get(PathFragment.create("/a/b"))).isEqualTo(1); |
| } |
| |
| @Test |
| public void unrootedDirectoriesError() { |
| PathTrie<Integer> pathTrie = new PathTrie<>(); |
| assertThrows(IllegalArgumentException.class, () -> pathTrie.put(PathFragment.create("a"), 1)); |
| } |
| } |