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The easiest way to generate controllable arbitrary test objects

There is a newer version: 1.1.3

/*
 * Fixture Monkey
 *
 * Copyright (c) 2021-present NAVER Corp.
 *
 * 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 com.navercorp.fixturemonkey.tree;

import static com.navercorp.fixturemonkey.api.generator.DefaultNullInjectGenerator.NOT_NULL_INJECT;

import java.util.Collections;
import java.util.List;

import org.apiguardian.api.API;
import org.apiguardian.api.API.Status;

import com.navercorp.fixturemonkey.api.property.SingleElementProperty;

@API(since = "0.4.0", status = Status.MAINTAINED)
public final class IdentityNodeResolver implements NodeResolver {
	public static final IdentityNodeResolver INSTANCE = new IdentityNodeResolver();

	private IdentityNodeResolver() {
	}

	@Override
	public List resolve(ObjectNode objectNode) {
		ObjectNode resultNode = getChildNodeIfWrapped(objectNode);
		resultNode.setNullInject(NOT_NULL_INJECT);

		return Collections.singletonList(resultNode);
	}

	private ObjectNode getChildNodeIfWrapped(ObjectNode objectNode) {
		ObjectNode searchNode = objectNode;

		while (isWrappedNode(searchNode)) {
			searchNode = searchNode.resolveChildren().get(0);
		}

		return searchNode;
	}

	private boolean isWrappedNode(ObjectNode searchNode) {
		List children = searchNode.resolveChildren();

		return children.size() == 1 && children.get(0).getResolvedProperty() instanceof SingleElementProperty;
	}

	@Override
	public List toNextNodePredicate() {
		return Collections.singletonList(StartNodePredicate.INSTANCE);
	}
}