TestRewriteConstants.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.rewrite;

import org.encog.ml.prg.EncogProgram;
import org.encog.parse.expression.common.RenderCommonExpression;
import org.junit.Assert;
import org.junit.Test;

public class TestRewriteConstants {
	
	public void eval(String start, String expect) {
		EncogProgram expression = new EncogProgram(start);
		RenderCommonExpression render = new RenderCommonExpression();
		RewriteConstants rewrite = new RewriteConstants();
		rewrite.rewrite(expression);
		Assert.assertEquals(expect, render.render(expression));
	}

	@Test
	public void testFull() {
		eval("1+2","3");
		eval("1+2+3","6");
		eval("1+2+3+4","10");
	}

	@Test
	public void testPartial() {
		eval("1+x","(1+x)");
		eval("1+2+x","(3+x)");
		eval("1.0/2.0+x","(0.5+x)");
	}
}