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// Copyright 2016 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.windows.util;
import static com.google.common.truth.Truth.assertWithMessage;
import static org.junit.Assert.fail;
import com.google.common.base.Joiner;
import com.google.common.base.Strings;
import com.google.devtools.build.lib.vfs.FileSystem;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.windows.jni.WindowsFileOperations;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/** Utilities for running Java tests on Windows. */
public final class WindowsTestUtil {
/** A path where temp files can be created. It is NOT owned by this class. */
private final String scratchRoot;
public WindowsTestUtil(String scratchRoot) {
this.scratchRoot = scratchRoot;
}
/**
* Create directory junctions then assert their existence.
*
* <p>Each key in the map is a junction path, relative to {@link #scratchRoot}. These are the link
* names.
*
* <p>Each value in the map is a directory or junction path, also relative to {@link
* #scratchRoot}. These are the link targets.
*/
public void createJunctions(Map<String, String> links) throws Exception {
for (Map.Entry<String, String> e : links.entrySet()) {
WindowsFileOperations.createJunction(
scratchRoot + "/" + e.getKey(), scratchRoot + "/" + e.getValue());
}
for (Map.Entry<String, String> e : links.entrySet()) {
assertWithMessage(
String.format("Could not create junction '%s' -> '%s'", e.getKey(), e.getValue()))
.that(new File(scratchRoot, e.getKey()).exists())
.isTrue();
}
}
/** Delete everything under {@link #scratchRoot}/path. */
public void deleteAllUnder(String path) throws IOException {
if (Strings.isNullOrEmpty(path)) {
path = scratchRoot;
} else {
path = scratchRoot + "\\" + path;
}
if (new File(path).exists()) {
runCommand("cmd.exe /c rd /s /q \"" + path + "\"");
}
}
/** Create a directory under `path`, relative to {@link #scratchRoot}. */
public java.nio.file.Path scratchDir(String path) throws IOException {
return Files.createDirectories(new File(scratchRoot, path).toPath());
}
/** Create a file with the given contents under `path`, relative to {@link #scratchRoot}. */
public java.nio.file.Path scratchFile(String path, String... contents) throws IOException {
File fd = new File(scratchRoot, path);
Files.createDirectories(fd.toPath().getParent());
try (FileWriter w = new FileWriter(fd)) {
for (String line : contents) {
w.write(line);
w.write('\n');
}
}
return fd.toPath();
}
/** Run a Command Prompt command. */
public static void runCommand(List<String> args) throws IOException {
runCommand(Joiner.on(' ').join(args));
}
/** Run a Command Prompt command. */
public static void runCommand(String cmd) throws IOException {
Process p = Runtime.getRuntime().exec(cmd);
try {
// Wait no more than 5 seconds to create all junctions.
p.waitFor(5, TimeUnit.SECONDS);
} catch (InterruptedException e) {
fail("Failed to execute command; cmd: " + cmd);
}
assertWithMessage("Command failed: " + cmd).that(p.exitValue()).isEqualTo(0);
}
public Path createVfsPath(FileSystem fs, String path) throws IOException {
return fs.getPath(scratchRoot + "/" + path);
}
}