org.junitpioneer.jupiter.json.AbstractJsonSourceBasedArgumentsProvider Maven / Gradle / Ivy
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/*
* Copyright 2016-2023 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.InputStream;
import java.lang.annotation.Annotation;
import java.util.List;
import java.util.stream.Stream;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.platform.commons.PreconditionViolationException;
import org.junitpioneer.internal.PioneerPreconditions;
abstract class AbstractJsonSourceBasedArgumentsProvider extends AbstractJsonArgumentsProvider {
// the reading of the resources / files is heavily inspired by Jupiter's CsvFileArgumentsProvider
private String dataLocation;
private List sources;
protected void accept(List sources, String dataLocation) {
this.sources = sources;
this.dataLocation = dataLocation;
}
@Override
protected Stream provideNodes(ExtensionContext context, JsonConverter jsonConverter) {
return PioneerPreconditions
.notEmpty(this.sources, "Value must not be empty")
.stream()
.map(source -> source.open(context))
.map(jsonConverter::toNode)
.flatMap(this::extractArgumentNodes);
}
private Stream extractArgumentNodes(Node node) {
// @formatter:off
Node nodeForExtraction = (dataLocation == null || dataLocation.isEmpty())
? node
: node.getNode(dataLocation)
.orElseThrow(() -> new PreconditionViolationException(
"Node " + node + " does not have data element at " + dataLocation));
// @formatter:on
if (nodeForExtraction.isArray()) {
return nodeForExtraction.elements();
}
return Stream.of(nodeForExtraction);
}
interface Source {
InputStream open(ExtensionContext context);
}
}