1 /*
2  * [The "BSD licence"]
3  * Copyright (c) 2005-2008 Terence Parr
4  * All rights reserved.
5  *
6  * Conversion to C#:
7  * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 namespace Antlr3.Runtime.Test
34 {
35     using System;
36     using Antlr.Runtime;
37     using Antlr.Runtime.Tree;
38     using Microsoft.VisualStudio.TestTools.UnitTesting;
39 
40     [TestClass]
41     public class TestDotTreeGenerator
42     {
43         [TestMethod]
TestCreateDot()44         public void TestCreateDot()
45         {
46             ANTLRStringStream input = new ANTLRStringStream( "3 * x" );
47             SimpleExpressionLexer lexer = new SimpleExpressionLexer( input );
48             CommonTokenStream tokens = new CommonTokenStream( lexer );
49             SimpleExpressionParser parser = new SimpleExpressionParser( tokens );
50             var result = parser.expression();
51 
52             var tree = result.Tree;
53             var adaptor = parser.TreeAdaptor;
54 
55             DotTreeGenerator gen = new DotTreeGenerator();
56             string output = gen.ToDot( tree, adaptor );
57             string newline = Environment.NewLine;
58             string expected =
59                 @"digraph {" + newline
60                 + newline
61                 + @"	ordering=out;" + newline
62                 + @"	ranksep=.4;" + newline
63                 + @"	bgcolor=""lightgrey""; node [shape=box, fixedsize=false, fontsize=12, fontname=""Helvetica-bold"", fontcolor=""blue""" + newline
64                 + @"		width=.25, height=.25, color=""black"", fillcolor=""white"", style=""filled, solid, bold""];" + newline
65                 + @"	edge [arrowsize=.5, color=""black"", style=""bold""]" + newline
66                 + newline
67                 + @"  n0 [label=""""];" + newline
68                 + @"  n1 [label=""*""];" + newline
69                 + @"  n1 [label=""*""];" + newline
70                 + @"  n2 [label=""3""];" + newline
71                 + @"  n3 [label=""x""];" + newline
72                 + @"  n4 [label=""""];" + newline
73                 + newline
74                 + @"  n0 -> n1 // """" -> ""*""" + newline
75                 + @"  n1 -> n2 // ""*"" -> ""3""" + newline
76                 + @"  n1 -> n3 // ""*"" -> ""x""" + newline
77                 + @"  n0 -> n4 // """" -> """"" + newline
78                 + newline
79                 + @"}" + newline
80                 + @"";
81 
82             Assert.AreEqual( expected, output );
83         }
84     }
85 }
86