google-nomulus/javatests/google/registry/testing/TestDataHelper.java
weiminyu 9e02502fd4 Fix bugs exposed by testing with Gradle
The following issues are addressed:
- XML sanitizer should preserve input encoding. Gradle loses any that is not UTF-8. Bazel loses any that is not ASCII.
- Verify that XML sanitizer works with non-UTF8 encoding
- GpgSystemCommandRule breaks when $TMPDIR env variable is not set
- TestDataHelper throws exception when loading resources if resources are plain files on default file system as opposed to being in a jar file.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=216537258
2018-10-17 11:44:41 -04:00

115 lines
4.4 KiB
Java

// Copyright 2017 The Nomulus 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 google.registry.testing;
import static google.registry.util.CollectionUtils.nullToEmpty;
import static google.registry.util.ResourceUtils.readResourceBytes;
import static google.registry.util.ResourceUtils.readResourceUtf8;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableMap;
import com.google.common.io.ByteSource;
import com.google.common.io.MoreFiles;
import com.google.common.io.Resources;
import java.io.IOException;
import java.net.URI;
import java.nio.file.FileSystemAlreadyExistsException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import javax.annotation.Nullable;
/** Contains helper methods for dealing with test data. */
public final class TestDataHelper {
@AutoValue
abstract static class FileKey {
abstract Class<?> context();
abstract String filename();
static FileKey create(Class<?> context, String filename) {
return new AutoValue_TestDataHelper_FileKey(context, filename);
}
}
private static final Map<FileKey, String> fileCache = new ConcurrentHashMap<>();
private static final Map<FileKey, ByteSource> byteCache = new ConcurrentHashMap<>();
/**
* Loads a text file from the "testdata" directory relative to the location of the specified
* context class.
*/
public static String loadFile(Class<?> context, String filename) {
return fileCache.computeIfAbsent(
FileKey.create(context, filename),
k -> readResourceUtf8(context, "testdata/" + filename));
}
/**
* Loads a text file from the "testdata" directory relative to the location of the specified
* context class, and substitutes in values for placeholders of the form <code>%tagname%</code>.
*/
public static String loadFile(
Class<?> context, String filename, @Nullable Map<String, String> substitutions) {
String fileContents = loadFile(context, filename);
for (Entry<String, String> entry : nullToEmpty(substitutions).entrySet()) {
fileContents = fileContents.replaceAll("%" + entry.getKey() + "%", entry.getValue());
}
return fileContents;
}
/**
* Loads a {@link ByteSource} from the "testdata" directory relative to the location of the
* specified context class.
*/
public static ByteSource loadBytes(Class<?> context, String filename) {
return byteCache.computeIfAbsent(
FileKey.create(context, filename),
k -> readResourceBytes(context, "testdata/" + filename));
}
/**
* Returns the "real" location of the file loaded by the other commands, starting from javatests/.
*/
public static String filePath(Class<?> context, String filename) {
String packagePath = context.getPackage().getName().replace('.', '/');
return String.format("javatests/%s/testdata/%s", packagePath, filename);
}
/** Returns a recursive iterable of all files in the given directory. */
public static Iterable<Path> listFiles(Class<?> context, String directory) throws Exception {
URI dir = Resources.getResource(context, directory).toURI();
ensureFileSystemPresentForUri(dir);
return MoreFiles.fileTraverser().breadthFirst(Paths.get(dir));
}
private static void ensureFileSystemPresentForUri(URI uri) throws IOException {
if (uri.getScheme().equals(FileSystems.getDefault().provider().getScheme())) {
// URI maps to default file system (file://...), which must be present. Besides, calling
// FileSystem.newFileSystem on this URI may trigger FileSystemAlreadyExistsException.
return;
}
try {
// URI maps to a special file system, e.g., jar:...
FileSystems.newFileSystem(uri, ImmutableMap.of("create", "true"));
} catch (FileSystemAlreadyExistsException e) {
// ignore.
}
}
}