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/*
* Copyright 2013 Google Inc.
*
* 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.jimfs;
import static com.google.common.base.Functions.toStringFunction;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.List;
/** @author Colin Decker */
public final class PathTester {
private final PathService pathService;
private final String string;
private String root;
private ImmutableList<String> names = ImmutableList.of();
public PathTester(PathService pathService, String string) {
this.pathService = pathService;
this.string = string;
}
public PathTester root(String root) {
this.root = root;
return this;
}
public PathTester names(Iterable<String> names) {
this.names = ImmutableList.copyOf(names);
return this;
}
public PathTester names(String... names) {
return names(Arrays.asList(names));
}
public void test(String first, String... more) {
Path path = pathService.parsePath(first, more);
test(path);
}
public void test(Path path) {
assertEquals(string, path.toString());
testRoot(path);
testNames(path);
testParents(path);
testStartsWith(path);
testEndsWith(path);
testSubpaths(path);
}
private void testRoot(Path path) {
if (root != null) {
assertTrue(path + ".isAbsolute() should be true", path.isAbsolute());
assertNotNull(path + ".getRoot() should not be null", path.getRoot());
assertEquals(root, path.getRoot().toString());
} else {
assertFalse(path + ".isAbsolute() should be false", path.isAbsolute());
assertNull(path + ".getRoot() should be null", path.getRoot());
}
}
private void testNames(Path path) {
assertEquals(names.size(), path.getNameCount());
assertEquals(names, names(path));
for (int i = 0; i < names.size(); i++) {
assertEquals(names.get(i), path.getName(i).toString());
// don't test individual names if this is an individual name
if (names.size() > 1) {
new PathTester(pathService, names.get(i)).names(names.get(i)).test(path.getName(i));
}
}
if (names.size() > 0) {
String fileName = names.get(names.size() - 1);
assertEquals(fileName, path.getFileName().toString());
// don't test individual names if this is an individual name
if (names.size() > 1) {
new PathTester(pathService, fileName).names(fileName).test(path.getFileName());
}
}
}
private void testParents(Path path) {
Path parent = path.getParent();
if (root != null && names.size() >= 1 || names.size() > 1) {
assertNotNull(parent);
}
if (parent != null) {
String parentName = names.size() == 1 ? root : string.substring(0, string.lastIndexOf('/'));
new PathTester(pathService, parentName)
.root(root)
.names(names.subList(0, names.size() - 1))
.test(parent);
}
}
private void testSubpaths(Path path) {
if (path.getRoot() == null) {
assertEquals(path, path.subpath(0, path.getNameCount()));
}
if (path.getNameCount() > 1) {
String stringWithoutRoot = root == null ? string : string.substring(root.length());
// test start + 1 to end and start to end - 1 subpaths... this recursively tests all subpaths
// actually tests most possible subpaths multiple times but... eh
Path startSubpath = path.subpath(1, path.getNameCount());
List<String> startNames =
ImmutableList.copyOf(Splitter.on('/').split(stringWithoutRoot))
.subList(1, path.getNameCount());
new PathTester(pathService, Joiner.on('/').join(startNames))
.names(startNames)
.test(startSubpath);
Path endSubpath = path.subpath(0, path.getNameCount() - 1);
List<String> endNames =
ImmutableList.copyOf(Splitter.on('/').split(stringWithoutRoot))
.subList(0, path.getNameCount() - 1);
new PathTester(pathService, Joiner.on('/').join(endNames)).names(endNames).test(endSubpath);
}
}
private void testStartsWith(Path path) {
// empty path doesn't start with any path
if (root != null || !names.isEmpty()) {
Path other = path;
while (other != null) {
assertTrue(path + ".startsWith(" + other + ") should be true", path.startsWith(other));
assertTrue(
path + ".startsWith(" + other + ") should be true", path.startsWith(other.toString()));
other = other.getParent();
}
}
}
private void testEndsWith(Path path) {
// empty path doesn't start with any path
if (root != null || !names.isEmpty()) {
Path other = path;
while (other != null) {
assertTrue(path + ".endsWith(" + other + ") should be true", path.endsWith(other));
assertTrue(
path + ".endsWith(" + other + ") should be true", path.endsWith(other.toString()));
if (other.getRoot() != null && other.getNameCount() > 0) {
other = other.subpath(0, other.getNameCount());
} else if (other.getNameCount() > 1) {
other = other.subpath(1, other.getNameCount());
} else {
other = null;
}
}
}
}
private static List<String> names(Path path) {
return FluentIterable.from(path).transform(toStringFunction()).toList();
}
}
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