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/*
* Copyright 2016-2022 the original author or authors.
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v2.0 which
* accompanies this distribution and is available at
*
* http://www.eclipse.org/legal/epl-v20.html
*/
package org.junitpioneer.jupiter.json;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.junit.platform.commons.PreconditionViolationException;
import org.junitpioneer.internal.PioneerPreconditions;
/**
* Provides arguments from JSON files specified with {@link JsonFileSource}.
*/
class JsonFileSourceArgumentsProvider extends AbstractJsonSourceBasedArgumentsProvider {
// the reading of the resources / files is heavily inspired by Jupiter's CsvFileArgumentsProvider
@Override
public void accept(JsonFileSource jsonSource) {
Stream files = Arrays.stream(jsonSource.value()).map(JsonFileSourceArgumentsProvider::fileResource);
accept(files.collect(Collectors.toList()), jsonSource.data());
}
private static Source fileResource(String file) {
return context -> {
PioneerPreconditions.notBlank(file, "File must not be null or blank");
Path filePath = Paths.get(file);
if (!Files.exists(filePath))
throw new PreconditionViolationException("File does not exist: " + file);
try {
return Files.newInputStream(filePath);
}
catch (IOException e) {
throw new UncheckedIOException("Failed to read file " + file, e);
}
};
}
}
