IfExpressionTest.java

/*
Copyright (c) 2008 Arno Haase, Andr� Arnold.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/epl-v10.html

Contributors:
    Arno Haase - initial API and implementation
    Andr� Arnold
 */
package org.eclipse.xtend.backend.expr;

import static org.eclipse.xtend.backend.testhelpers.BackendTestHelper.SOURCE_POS;
import static org.eclipse.xtend.backend.testhelpers.BackendTestHelper.createEmptyExecutionContext;
import static org.eclipse.xtend.backend.testhelpers.BackendTestHelper.createLiteral;
import static org.junit.Assert.assertEquals;

import org.eclipse.xtend.backend.common.ExpressionBase;
import org.eclipse.xtend.backend.testhelpers.MutableLiteralExpression;
import org.junit.Test;


/**
 * 
 * @author Arno Haase (http://www.haase-consulting.com)
 * @author Andr� Arnold
 */
public class IfExpressionTest {
    
    @Test public void testLogic () {
        final MutableLiteralExpression condExpression = new MutableLiteralExpression (true);
        final ExpressionBase ifExpr = createLiteral ("ifBranch");
        final ExpressionBase elseExpr = createLiteral ("elseBranch");
        
        final IfExpression expr = new IfExpression (condExpression, ifExpr, elseExpr, SOURCE_POS);
        
        assertEquals ("ifBranch", expr.evaluate (createEmptyExecutionContext()));
        
        condExpression.setValue (false);
        assertEquals ("elseBranch", expr.evaluate (createEmptyExecutionContext()));
        
        condExpression.setValue (null);
        assertEquals (null, expr.evaluate (createEmptyExecutionContext()));
    }
}