CodeMapperTest.java

/*
 * Copyright (C) 2010 Brockmann Consult GmbH (info@brockmann-consult.de)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your option)
 * any later version.
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see http://www.gnu.org/licenses/
 */

package com.bc.ceres.compiler;

import junit.framework.TestCase;

import java.util.HashSet;

import com.bc.ceres.compiler.CodeMapper;

public class CodeMapperTest extends TestCase {
    public void testCodeMapper() {
        final HashSet<String> nameSet = new HashSet<String>();
        nameSet.add("b1");
        nameSet.add("b2");
        nameSet.add("b3");
        nameSet.add("b4");

        String expression = "b4 + sqrt(b1 * b1 + b2 * b2)";

        CodeMapper.NameMapper mapper = new CodeMapper.NameMapper() {
            public String mapName(String name) {
                return nameSet.contains(name) ? "_a" + name : null;
            }
        };
        CodeMapper.CodeMapping codeMapping = CodeMapper.mapCode(expression, mapper);

        assertNotNull(codeMapping);
        assertEquals("_ab4 + sqrt(_ab1 * _ab1 + _ab2 * _ab2)", codeMapping.getMappedCode());
        assertEquals(3, codeMapping.getMappings().size());
        assertEquals("_ab1", codeMapping.getMappings().get("b1"));
        assertEquals("_ab2", codeMapping.getMappings().get("b2"));
        assertEquals("_ab4", codeMapping.getMappings().get("b4"));
    }
}