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/*
 * $Id: TestIsNotNullFunction.java,v 1.2 2004/08/07 10:16:48 ahimanikya Exp $
 * =======================================================================
 * Copyright (c) 2003 Axion Development Team.  All rights reserved.
 *  
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * 1. Redistributions of source code must retain the above 
 *    copyright notice, this list of conditions and the following 
 *    disclaimer. 
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 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in 
 *    the documentation and/or other materials provided with the 
 *    distribution. 
 *   
 * 3. The names "Tigris", "Axion", nor the names of its contributors may 
 *    not be used to endorse or promote products derived from this 
 *    software without specific prior written permission. 
 *  
 * 4. Products derived from this software may not be called "Axion", nor 
 *    may "Tigris" or "Axion" appear in their names without specific prior
 *    written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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package org.axiondb.functions;

import java.util.HashMap;
import java.util.Map;

import junit.framework.Test;
import junit.framework.TestSuite;

import org.axiondb.ColumnIdentifier;
import org.axiondb.Function;
import org.axiondb.RowDecorator;
import org.axiondb.engine.rows.SimpleRow;

/**
 * @version $Revision: 1.2 $ $Date: 2004/08/07 10:16:48 $
 * @author Rodney Waldhoff
 */
public class TestIsNotNullFunction extends BaseFunctionTest {

    //------------------------------------------------------------ Conventional

    public TestIsNotNullFunction(String testName) {
        super(testName);
    }

    public static Test suite() {
        TestSuite suite = new TestSuite(TestIsNotNullFunction.class);
        return suite;
    }

    //--------------------------------------------------------------- Lifecycle

    //--------------------------------------------------------------- Framework
    
    protected ConcreteFunction makeFunction() {
        return new IsNotNullFunction();
    }
    
    //------------------------------------------------------------------- Tests

    public void testMakeNewInstance() {
        IsNotNullFunction function = new IsNotNullFunction();
        assertTrue(function.makeNewInstance() instanceof IsNotNullFunction);
        assertTrue(function.makeNewInstance() != function.makeNewInstance());
    }

    public void testEvaluate() throws Exception {
        Function function = makeFunction();
        ColumnIdentifier sel = new ColumnIdentifier("foo");
        function.addArgument(sel);
        Map map = new HashMap();
        map.put(sel,new Integer(0));                
        RowDecorator dec = new RowDecorator(map);
        {
            dec.setRow(new SimpleRow(new Object[] { null }));        
            assertEquals(Boolean.FALSE,function.evaluate(dec));
        }
        {
            dec.setRow(new SimpleRow(new Object[] { "xyzzy" }));        
            assertEquals(Boolean.TRUE,function.evaluate(dec));
        }
    }

    public void testValidity() throws Exception {
        ConcreteFunction function = makeFunction();
        assertTrue(! function.isValid() );
        function.addArgument(new ColumnIdentifier("foo"));
        assertTrue(function.isValid() );
        function.addArgument(new ColumnIdentifier("bar"));
        assertTrue(! function.isValid() );
    }
}
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