1 /*
   2  * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.scenario.effect.compiler.parser;
  27 
  28 import com.sun.scenario.effect.compiler.JSLParser;
  29 import com.sun.scenario.effect.compiler.model.BinaryOpType;
  30 import com.sun.scenario.effect.compiler.tree.BinaryExpr;
  31 import org.antlr.runtime.RecognitionException;
  32 import org.junit.Before;
  33 import org.junit.Test;
  34 import static org.junit.Assert.assertEquals;
  35 
  36 public class AddExprTest extends MultExprTest {
  37 
  38     private String mult;
  39 
  40     @Before
  41     @Override
  42     public void setUp() {
  43         super.setUp();
  44         this.mult = multiplicative();
  45     }
  46 
  47     @Test
  48     public void oneAddition() throws Exception {
  49         BinaryExpr tree = parseTreeFor(mult + " + " + mult);
  50         assertEquals(tree.getOp(), BinaryOpType.ADD);
  51     }
  52 
  53     @Test
  54     public void oneSubtraction() throws Exception {
  55         BinaryExpr tree = parseTreeFor(mult + "   - " + mult);
  56         assertEquals(tree.getOp(), BinaryOpType.SUB);
  57     }
  58 
  59     @Test
  60     public void additiveCombination() throws Exception {
  61         BinaryExpr tree = parseTreeFor(mult + " + " + mult + '-' + mult + '-' + mult + "   +" + mult);
  62         assertEquals(tree.getOp(), BinaryOpType.ADD);
  63     }
  64 
  65     @Test(expected = ClassCastException.class)
  66     public void notAnAdditiveExpression() throws Exception {
  67         parseTreeFor(mult + "!" + mult);
  68     }
  69 
  70     private BinaryExpr parseTreeFor(String text) throws RecognitionException {
  71         JSLParser parser = parserOver(text);
  72         return (BinaryExpr)parser.additive_expression();
  73     }
  74 
  75     protected String additive() {
  76         return "(" + multiplicative() + " + " + multiplicative() + ")";
  77     }
  78 }