TestSubtreeCrossover.java

/*
 * Encog(tm) Core v3.4 - Java Version
 * http://www.heatonresearch.com/encog/
 * https://github.com/encog/encog-java-core
 
 * Copyright 2008-2016 Heaton Research, Inc.
 *
 * 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.
 *   
 * For more information on Heaton Research copyrights, licenses 
 * and trademarks visit:
 * http://www.heatonresearch.com/copyright
 */
package org.encog.ml.prg.train.crossover;

import junit.framework.TestCase;
import org.encog.ml.prg.EncogProgram;
import org.encog.ml.prg.ProgramNode;
import org.encog.parse.expression.common.RenderCommonExpression;
import org.junit.Assert;

public class TestSubtreeCrossover extends TestCase {
	public void testCrossoverOperation() {
		RenderCommonExpression render = new RenderCommonExpression();
		EncogProgram prg = new EncogProgram("1+2");
		EncogProgram prg2 = new EncogProgram("4+5");
		ProgramNode node = prg.findNode(2);
		prg.replaceNode(node, prg2.getRootNode());
		Assert.assertEquals("(1+(4+5))",render.render(prg));
	}
}