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/*-
* ============LICENSE_START=======================================================
* org.onap.dcaegen2.collectors.ves
* ================================================================================
* Copyright (C) 2018 Nokia. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.vestest;
import static java.nio.file.Files.readAllBytes;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
/**
* @author Pawel Szalapski (pawel.szalapski@nokia.com)
*/
final class TestingUtilities {
private TestingUtilities() {
// utility class, no objects allowed
}
static String correctQuotes(String s) {
return s.replace("'", "\"");
}
static JsonObject readJSONFromFile(Path path) {
return rethrow(() -> (JsonObject) new JsonParser().parse(new String(readAllBytes(path))));
}
static Path createTemporaryFile() {
return rethrow(() -> {
Path temporaryDirectory = Files.createTempDirectory("temporaryDirectory");
Path temporaryFile = TestingUtilities.createFile(temporaryDirectory + "/testFile");
TestingUtilities.scheduleToBeDeletedAfterTests(temporaryDirectory);
TestingUtilities.scheduleToBeDeletedAfterTests(temporaryFile);
return temporaryFile;
});
}
private static Path createFile(String path) {
return rethrow(() -> Files.createFile(Paths.get(path)));
}
private static void scheduleToBeDeletedAfterTests(Path path) {
path.toFile().deleteOnExit();
}
/**
* Exception in test case usually means there is something wrong, it should never be catched, but rather thrown to
* be handled by JUnit framework.
*/
private static <T> T rethrow(CheckedSupplier<T> supplier) {
try {
return supplier.get();
} catch (Exception e) {
throw new RuntimeException();
}
}
@FunctionalInterface
interface CheckedSupplier<T> {
T get() throws Exception;
}
}
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