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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 com.google.common.testing.EqualsTester;
import com.google.devtools.build.lib.testutil.MoreAsserts;
import com.google.devtools.build.lib.vfs.WindowsOsPathPolicy.ShortPathResolver;
import java.util.HashMap;
import java.util.Map;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests windows-specific parts of {@link Path} */
@RunWith(JUnit4.class)
public class WindowsPathTest extends PathAbstractTest {
private static final class MockShortPathResolver implements ShortPathResolver {
// Full path to resolved child mapping.
private Map<String, String> resolutions = new HashMap<>();
@Override
public String resolveShortPath(String path) {
String[] segments = path.split("[\\\\/]+");
String result = "";
for (int i = 0; i < segments.length; ) {
String segment = segments[i];
String queryString = (result + segment).toLowerCase();
segment = resolutions.getOrDefault(queryString, segment);
result = result + segment;
++i;
if (i != segments.length) {
result += "/";
}
}
return result;
}
}
@Test
public void testEqualsAndHashcodeWindows() {
new EqualsTester()
.addEqualityGroup(create("/a/b"), create("/A/B"))
.addEqualityGroup(create("c:/a/b"), create("C:\\A\\B"))
.addEqualityGroup(create("C:/something/else"))
.testEquals();
}
@Test
public void testCaseIsPreserved() {
assertThat(create("C:/a/B").getPathString()).isEqualTo("C:/a/B");
}
@Test
public void testNormalizeWindows() {
assertThat(create("C:/")).isEqualTo(create("C:/"));
assertThat(create("c:/")).isEqualTo(create("C:/"));
assertThat(create("c:\\")).isEqualTo(create("C:/"));
assertThat(create("c:\\foo\\..\\bar\\")).isEqualTo(create("C:/bar"));
}
@Test
public void testStartsWithWindows() {
assertThat(create("C:/").startsWith(create("C:/"))).isTrue();
assertThat(create("C:/foo").startsWith(create("C:/"))).isTrue();
assertThat(create("C:/foo").startsWith(create("D:/"))).isFalse();
// Case insensitivity test
assertThat(create("C:/foo/bar").startsWith(create("C:/FOO"))).isTrue();
}
@Test
public void testGetParentDirectoryWindows() {
assertThat(create("C:/foo").getParentDirectory()).isEqualTo(create("C:/"));
assertThat(create("C:/").getParentDirectory()).isNull();
assertThat(create("/").getParentDirectory()).isNull();
}
@Test
public void testParentOfRootIsRootWindows() {
assertThat(create("C:/..")).isEqualTo(create("C:/"));
assertThat(create("C:/../../../../../..")).isEqualTo(create("C:/"));
assertThat(create("C:/../../../foo")).isEqualTo(create("C:/foo"));
}
@Test
public void testRelativeToWindows() {
assertThat(create("C:/foo").relativeTo(create("C:/")).getPathString()).isEqualTo("foo");
// Case insensitivity test
assertThat(create("C:/foo/bar").relativeTo(create("C:/FOO")).getPathString()).isEqualTo("bar");
MoreAsserts.assertThrows(
IllegalArgumentException.class, () -> create("D:/foo").relativeTo(create("C:/")));
}
@Test
public void testResolvesShortenedPaths() {
MockShortPathResolver shortPathResolver = new MockShortPathResolver();
WindowsOsPathPolicy osPathPolicy = new WindowsOsPathPolicy(shortPathResolver);
shortPathResolver.resolutions.put("d:/progra~1", "program files");
shortPathResolver.resolutions.put("d:/program files/micros~1", "microsoft something");
shortPathResolver.resolutions.put(
"d:/program files/microsoft something/foo/~bar~1", "~bar_hello");
// Assert normal shortpath resolution.
assertThat(normalize(osPathPolicy, "d:/progra~1/micros~1/foo/~bar~1/baz"))
.isEqualTo("D:/program files/microsoft something/foo/~bar_hello/baz");
assertThat(normalize(osPathPolicy, "d:/progra~1/micros~1/foo/will~1.exi/bar"))
.isEqualTo("D:/program files/microsoft something/foo/will~1.exi/bar");
assertThat(normalize(osPathPolicy, "d:/progra~1/micros~1"))
.isEqualTo("D:/program files/microsoft something");
// Pretend that a path we already failed to resolve once came into existence.
shortPathResolver.resolutions.put(
"d:/program files/microsoft something/foo/will~1.exi", "will.exist");
// Assert that this time we can resolve the previously non-existent path.
// The path string has an upper-case drive letter because that's how path printing works.
assertThat(normalize(osPathPolicy, "d:/progra~1/micros~1/foo/will~1.exi/bar"))
.isEqualTo("D:/program files/microsoft something/foo/will.exist/bar");
// Check needsToNormalized
assertThat(osPathPolicy.needsToNormalize("d:/progra~1/micros~1/foo/will~1.exi/bar"))
.isEqualTo(WindowsOsPathPolicy.NEEDS_SHORT_PATH_NORMALIZATION);
assertThat(osPathPolicy.needsToNormalize("will~1.exi"))
.isEqualTo(WindowsOsPathPolicy.NEEDS_SHORT_PATH_NORMALIZATION);
assertThat(osPathPolicy.needsToNormalize("d:/no-normalization"))
.isEqualTo(WindowsOsPathPolicy.NORMALIZED); // Sanity check
}
private static String normalize(OsPathPolicy osPathPolicy, String str) {
return osPathPolicy.normalize(str, osPathPolicy.needsToNormalize(str));
}
}
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