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// Copyright 2017 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 static java.util.stream.Collectors.toList;
import com.google.common.collect.Lists;
import com.google.common.testing.EqualsTester;
import com.google.devtools.build.lib.vfs.LocalPath.OsPathPolicy;
import java.util.Collections;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
/** Tests for {@link LocalPath}. */
public abstract class LocalPathAbstractTest {
private OsPathPolicy os;
@Before
public void setup() {
os = getFilePathOs();
}
@Test
public void testEqualsAndHashCode() {
new EqualsTester()
.addEqualityGroup(
create("../relative/path"), create("..").getRelative("relative").getRelative("path"))
.addEqualityGroup(create("something/else"))
.addEqualityGroup(create(""), LocalPath.EMPTY)
.testEquals();
}
@Test
public void testRelativeTo() {
assertThat(create("").relativeTo(create("")).getPathString()).isEmpty();
assertThat(create("foo").relativeTo(create("foo")).getPathString()).isEmpty();
assertThat(create("foo/bar/baz").relativeTo(create("foo")).getPathString())
.isEqualTo("bar/baz");
assertThat(create("foo/bar/baz").relativeTo(create("foo/bar")).getPathString())
.isEqualTo("baz");
assertThat(create("foo").relativeTo(create("")).getPathString()).isEqualTo("foo");
// Cannot relativize non-ancestors
assertThrows(IllegalArgumentException.class, () -> create("foo/bar").relativeTo(create("fo")));
// Make sure partial directory matches aren't reported
assertThrows(
IllegalArgumentException.class, () -> create("foo/bar").relativeTo(create("foo/ba")));
}
@Test
public void testGetRelative() {
assertThat(create("a").getRelative("b").getPathString()).isEqualTo("a/b");
assertThat(create("a/b").getRelative("c/d").getPathString()).isEqualTo("a/b/c/d");
assertThat(create("a").getRelative("").getPathString()).isEqualTo("a");
assertThat(create("a/b").getRelative("../c").getPathString()).isEqualTo("a/c");
assertThat(create("a/b").getRelative("..").getPathString()).isEqualTo("a");
}
@Test
public void testEmptyPathToEmptyPath() {
// compare string forms
assertThat(create("").getPathString()).isEmpty();
// compare fragment forms
assertThat(create("")).isEqualTo(create(""));
}
@Test
public void testSimpleNameToSimpleName() {
// compare string forms
assertThat(create("foo").getPathString()).isEqualTo("foo");
// compare fragment forms
assertThat(create("foo")).isEqualTo(create("foo"));
}
@Test
public void testSimplePathToSimplePath() {
// compare string forms
assertThat(create("foo/bar").getPathString()).isEqualTo("foo/bar");
// compare fragment forms
assertThat(create("foo/bar")).isEqualTo(create("foo/bar"));
}
@Test
public void testStripsTrailingSlash() {
// compare string forms
assertThat(create("foo/bar/").getPathString()).isEqualTo("foo/bar");
// compare fragment forms
assertThat(create("foo/bar/")).isEqualTo(create("foo/bar"));
}
@Test
public void testGetParentDirectory() {
LocalPath fooBarWiz = create("foo/bar/wiz");
LocalPath fooBar = create("foo/bar");
LocalPath foo = create("foo");
LocalPath empty = create("");
assertThat(fooBarWiz.getParentDirectory()).isEqualTo(fooBar);
assertThat(fooBar.getParentDirectory()).isEqualTo(foo);
assertThat(foo.getParentDirectory()).isEqualTo(empty);
assertThat(empty.getParentDirectory()).isNull();
}
@Test
public void testBasename() throws Exception {
assertThat(create("foo/bar").getBaseName()).isEqualTo("bar");
assertThat(create("foo/").getBaseName()).isEqualTo("foo");
assertThat(create("foo").getBaseName()).isEqualTo("foo");
assertThat(create("").getBaseName()).isEmpty();
}
@Test
public void testStartsWith() {
// (relative path, relative prefix) => true
assertThat(create("foo/bar").startsWith(create("foo/bar"))).isTrue();
assertThat(create("foo/bar").startsWith(create("foo"))).isTrue();
assertThat(create("foot/bar").startsWith(create("foo"))).isFalse();
}
@Test
public void testNormalize() {
assertThat(create("a/b")).isEqualTo(create("a/b"));
assertThat(create("a/../../b")).isEqualTo(create("../b"));
assertThat(create("a/../..")).isEqualTo(create(".."));
assertThat(create("a/../b")).isEqualTo(create("b"));
assertThat(create("a/b/../b")).isEqualTo(create("a/b"));
}
@Test
public void testNormalStringsDoNotAllocate() {
String normal1 = "a/b/hello.txt";
assertThat(create(normal1).getPathString()).isSameAs(normal1);
// Sanity check our testing strategy
String notNormal = "a/../b";
assertThat(create(notNormal).getPathString()).isNotSameAs(notNormal);
}
@Test
public void testComparableSortOrder() {
List<LocalPath> list =
Lists.newArrayList(
create("zzz"),
create("ZZZ"),
create("ABC"),
create("aBc"),
create("AbC"),
create("abc"));
Collections.sort(list);
List<String> result = list.stream().map(LocalPath::getPathString).collect(toList());
if (os.isCaseSensitive()) {
assertThat(result).containsExactly("ABC", "AbC", "ZZZ", "aBc", "abc", "zzz").inOrder();
} else {
// Partial ordering among case-insensitive items guaranteed by Collections.sort stability
assertThat(result).containsExactly("ABC", "aBc", "AbC", "abc", "zzz", "ZZZ").inOrder();
}
}
protected abstract OsPathPolicy getFilePathOs();
protected LocalPath create(String path) {
return LocalPath.createWithOs(path, os);
}
}
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