TestLikeCriteriaImpl.java

/*
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 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
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 */

package org.teiid.dqp.internal.datamgr;

import org.teiid.language.Like;
import org.teiid.language.Literal;
import org.teiid.query.sql.lang.MatchCriteria;
import org.teiid.query.sql.symbol.Constant;
import org.teiid.query.sql.symbol.ElementSymbol;


import junit.framework.TestCase;

public class TestLikeCriteriaImpl extends TestCase {

    /**
     * Constructor for TestLikeCriteriaImpl.
     * @param name
     */
    public TestLikeCriteriaImpl(String name) {
        super(name);
    }

    public static MatchCriteria helpExample(String right, char escape, boolean negated) {
        ElementSymbol e1 = TestElementImpl.helpExample("vm1.g1", "e1"); //$NON-NLS-1$ //$NON-NLS-2$
        MatchCriteria match = new MatchCriteria(e1, new Constant(right), escape);
        match.setNegated(negated);
        return match;
    }
    
    public static Like example(String right, char escape, boolean negated) throws Exception {
        return TstLanguageBridgeFactory.factory.translate(helpExample(right, escape, negated));
    }

    public void testGetLeftExpression() throws Exception {
        assertNotNull(example("abc", '.', false).getLeftExpression()); //$NON-NLS-1$
    }

    public void testGetRightExpression() throws Exception {
        Like like = example("abc", '.', false); //$NON-NLS-1$
        assertNotNull(like.getRightExpression());
        assertTrue(like.getRightExpression() instanceof Literal);
        assertEquals("abc", ((Literal)like.getRightExpression()).getValue()); //$NON-NLS-1$
    }

    public void testGetEscapeCharacter() throws Exception {
        assertEquals(new Character('.'), example("abc", '.', false).getEscapeCharacter()); //$NON-NLS-1$
    }

    public void testIsNegated() throws Exception {
        assertTrue(example("abc", '.', true).isNegated()); //$NON-NLS-1$
        assertFalse(example("abc", '.', false).isNegated()); //$NON-NLS-1$
    }

}