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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package utils;
import static org.junit.jupiter.api.Assertions.fail;
import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class FileUtils {
/**
* Reads contents of files inside the eventBodyDirectory, combines contents with metadata to make an Event Object.
* Fails test in the event of failure to read a file.
* @param targetDirectory Path to directory with files.
* @return List of Strings containing the body as acquired from files inside targetDirectory.
* @throws IOException in the event it fails to read from the files.
*/
public static List<String> getFilesFromDirectory(Path targetDirectory ) throws IOException {
try (Stream<Path> eventFileStream = Files.walk(targetDirectory)) {
return eventFileStream.filter(Files::isRegularFile)
.filter(Files::isReadable)
.map(FileUtils::getFileContents)
.collect(Collectors.toList());
}
}
/**
* reads contents of file into a string.
* fails a tests in the event failure occurs.
* @param path path to file.
* @return string containing files contents
*/
public static String getFileContents(Path path) {
try {
return new String(Files.readAllBytes(path));
} catch (IOException exception) {
fail("IOException occurred while reading file.");
}
return null;
}
/**
* Reads contents of resource.
* fails a test in the event failure occurs.
* @param fileName of file in resources to be read.
* @return contents of file
*/
public static String getFileContents(String fileName) {
try {
Path path = Paths.get(ClassLoader.getSystemResource(fileName).toURI());
return getFileContents(path);
} catch (URISyntaxException exception) {
fail("Exception occurred, failed to acquire resource URI.");
}
return null;
}
}
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