TestExpressionSymbol.java

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package org.teiid.query.sql.lang;

import org.teiid.query.sql.symbol.Constant;
import org.teiid.query.sql.symbol.Expression;
import org.teiid.query.sql.symbol.ExpressionSymbol;

import junit.framework.TestCase;

public class TestExpressionSymbol extends TestCase {

    
    public void testExpressionHashCode() {
        Expression expr1 = new Constant(new Integer(1));
        Expression expr2 = new Constant(new Integer(2));
        ExpressionSymbol symbol1 = new ExpressionSymbol("foo", expr1); //$NON-NLS-1$
        ExpressionSymbol symbol2 = new ExpressionSymbol("bar", expr2); //$NON-NLS-1$
        
        assertFalse(symbol1.hashCode() == symbol2.hashCode());
    }
    
    public void testExpressionHashCode1() {
        Expression expr1 = new Constant(new Integer(1));
        Expression expr2 = new Constant(new Integer(1));
        ExpressionSymbol symbol1 = new ExpressionSymbol("foo", expr1); //$NON-NLS-1$
        ExpressionSymbol symbol2 = new ExpressionSymbol("bar", expr2); //$NON-NLS-1$
        
        assertTrue(symbol1.hashCode() == symbol2.hashCode());
    }

    
}