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source: trunk/HeuristicLab.Tests/HeuristicLab.Problems.DataAnalysis.Symbolic-3.4/InfixExpressionParserTest.cs @ 18169

Last change on this file since 18169 was 18169, checked in by gkronber, 3 years ago

#2938: fixed parsing of subtraction and division as well as parsing of unary sign. Additionally, fixed parsing if negative initial values for number symbol (see #3140)
File size: 8.8 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22
23using System;
24using Microsoft.VisualStudio.TestTools.UnitTesting;
25namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Tests {
26
27
28  [TestClass]
29  public class InfixExpressionParserTest {
30    [TestMethod]
31    [TestCategory("Problems.DataAnalysis.Symbolic")]
32    [TestProperty("Time", "short")]
33    public void InfixExpressionParserTestFormatting() {
34      var formatter = new InfixExpressionFormatter();
35      var parser = new InfixExpressionParser();
36      Assert.AreEqual("3", formatter.Format(parser.Parse("3")));
37      Assert.AreEqual("(3 * 3)", formatter.Format(parser.Parse("3*3")));
38      Assert.AreEqual("(3 * 4)",formatter.Format(parser.Parse("3 * 4")));
39      Assert.AreEqual("0.123",formatter.Format(parser.Parse("123E-03")));
40      Assert.AreEqual("0.123",formatter.Format(parser.Parse("123e-03")));
41      Assert.AreEqual("123000",formatter.Format(parser.Parse("123e+03")));
42      Assert.AreEqual("123000",formatter.Format(parser.Parse("123E+03")));
43      Assert.AreEqual("0.123",formatter.Format(parser.Parse("123.0E-03")));
44      Assert.AreEqual("0.123",formatter.Format(parser.Parse("123.0e-03")));
45      Assert.AreEqual("123000",formatter.Format(parser.Parse("123.0e+03")));
46      Assert.AreEqual("123000",formatter.Format(parser.Parse("123.0E+03")));
47      Assert.AreEqual("0.123",formatter.Format(parser.Parse("123.0E-3")));
48      Assert.AreEqual("0.123",formatter.Format(parser.Parse("123.0e-3")));
49      Assert.AreEqual("123000",formatter.Format(parser.Parse("123.0e+3")));
50      Assert.AreEqual("123000",formatter.Format(parser.Parse("123.0E+3")));
51
52      Assert.AreEqual("(3.1415 + 2)",formatter.Format(parser.Parse("3.1415+2.0")));
53      Assert.AreEqual("(3.1415 / 2)",formatter.Format(parser.Parse("3.1415/2.0")));
54      Assert.AreEqual("(3.1415 * 2)",formatter.Format(parser.Parse("3.1415*2.0")));
55      Assert.AreEqual("(3.1415 - 2)", formatter.Format(parser.Parse("3.1415-2.0")));
56      // round-trip
57      Assert.AreEqual("(3.1415 - 2)",formatter.Format(parser.Parse(formatter.Format(parser.Parse("3.1415-2.0")))));
58      Assert.AreEqual("(3.1415 + 2)",formatter.Format(parser.Parse("3.1415+(2.0)")));
59      Assert.AreEqual("(3.1415 + 2)", formatter.Format(parser.Parse("(3.1415+(2.0))")));
60
61
62      Assert.AreEqual("LOG(3)",formatter.Format(parser.Parse("log(3)")));
63      Assert.AreEqual("LOG((-3))",formatter.Format(parser.Parse("log(-3)")));
64      Assert.AreEqual("EXP(3)",formatter.Format(parser.Parse("exp(3)")));
65      Assert.AreEqual("EXP((-3))",formatter.Format(parser.Parse("exp(-3)")));
66      Assert.AreEqual("SQRT(3)", formatter.Format(parser.Parse("sqrt(3)")));
67
68      Assert.AreEqual("SQR((-3))", formatter.Format(parser.Parse("sqr((-3))")));
69
70      Assert.AreEqual("((3 / 3) + (2 / 2) + (1 / 1))",formatter.Format(parser.Parse("3/3+2/2+1/1")));
71      Assert.AreEqual("((((((-3) + 30) - 2) + 20) - 1) + 10)", formatter.Format(parser.Parse("-3+30-2+20-1+10")));
72
73      // 'flattening' of nested addition, subtraction, multiplication, or division
74      Assert.AreEqual("(1 + 2 + 3 + 4)", formatter.Format(parser.Parse("1 + 2 + 3 + 4")));
75      Assert.AreEqual("(1 - 2 - 3 - 4)", formatter.Format(parser.Parse("1 - 2 - 3 - 4")));
76      Assert.AreEqual("(1 * 2 * 3 * 4)", formatter.Format(parser.Parse("1 * 2 * 3 * 4")));
77      Assert.AreEqual("(1 / 2 / 3 / 4)", formatter.Format(parser.Parse("1 / 2 / 3 / 4")));
78
79      // signed variables / constants
80      Assert.AreEqual("(-1*'x1')", formatter.Format(parser.Parse("-x1")));
81      Assert.AreEqual("1", formatter.Format(parser.Parse("--1.0")));
82      Assert.AreEqual("1", formatter.Format(parser.Parse("----1.0")));
83      Assert.AreEqual("1", formatter.Format(parser.Parse("-+-1.0")));
84      Assert.AreEqual("1", formatter.Format(parser.Parse("+-+-1.0")));
85      Assert.AreEqual("((-3) + (-1))", formatter.Format(parser.Parse("-3 + -1.0")));
86
87
88      Assert.AreEqual("'x1'",formatter.Format(parser.Parse("\"x1\"")));
89      Assert.AreEqual("'var name'",formatter.Format(parser.Parse("\'var name\'")));
90      Assert.AreEqual("'var name'",formatter.Format(parser.Parse("\"var name\"")));
91      Assert.AreEqual("'1'",formatter.Format(parser.Parse("\"1\"")));
92
93      Assert.AreEqual("'var \" name'",formatter.Format(parser.Parse("'var \" name\'")));
94      Assert.AreEqual("\"var ' name\"", formatter.Format(parser.Parse("\"var \' name\"")));
95
96
97      Assert.AreEqual("('x1' * 'x2')",formatter.Format(parser.Parse("\"x1\"*\"x2\"")));
98      Assert.AreEqual("(('x1' * 'x2') + ('x3' * 'x4'))",formatter.Format(parser.Parse("\"x1\"*\"x2\"+\"x3\"*\"x4\"")));
99      Assert.AreEqual("(('x1' * 'x2') + ('x3' * 'x4'))", formatter.Format(parser.Parse("x1*x2+x3*x4")));
100
101
102      Assert.AreEqual("(3 ^ 2)",formatter.Format(parser.Parse("POW(3, 2)")));
103      Assert.AreEqual("(3.1 ^ 2.1)",formatter.Format(parser.Parse("POW(3.1, 2.1)")));
104      Assert.AreEqual("(3.1 ^ 2.1)",formatter.Format(parser.Parse("POW(3.1 , 2.1)")));
105      Assert.AreEqual("(3.1 ^ 2.1)",formatter.Format(parser.Parse("POW(3.1 ,2.1)")));
106      Assert.AreEqual("((-3.1) ^ (-2.1))",formatter.Format(parser.Parse("POW(-3.1 , - 2.1)")));
107      Assert.AreEqual("ROOT(3, 2)",formatter.Format(parser.Parse("ROOT(3, 2)")));
108      Assert.AreEqual("ROOT(3.1, 2.1)",formatter.Format(parser.Parse("ROOT(3.1, 2.1)")));
109      Assert.AreEqual("ROOT(3.1, 2.1)",formatter.Format(parser.Parse("ROOT(3.1 , 2.1)")));
110      Assert.AreEqual("ROOT(3.1, 2.1)",formatter.Format(parser.Parse("ROOT(3.1 ,2.1)")));
111      Assert.AreEqual("ROOT((-3.1), (-2.1))", formatter.Format(parser.Parse("ROOT(-3.1 , -2.1)")));
112
113      Assert.AreEqual("IF(GT(0, 1), 1, 0)",formatter.Format(parser.Parse("IF(GT( 0, 1), 1, 0)")));
114      Assert.AreEqual("IF(LT(0, 1), 1, 0)",formatter.Format(parser.Parse("IF(LT(0,1), 1 , 0)")));
115      Assert.AreEqual("LAG('x', 1)",formatter.Format(parser.Parse("LAG(x, 1)")));
116      Assert.AreEqual("LAG('x', -1)",formatter.Format(parser.Parse("LAG(x, -1)")));
117      Assert.AreEqual("LAG('x', 1)",formatter.Format(parser.Parse("LAG(x, +1)")));
118      Assert.AreEqual("('x' * LAG('x', 1))", formatter.Format(parser.Parse("x * LAG('x', +1)")));
119
120      // factor variables
121      Assert.AreEqual("('x'[1] * 'y')",formatter.Format(parser.Parse("x [1.0] * y")));
122      Assert.AreEqual("('x'[1, 2] * 'y'[1, 2])",formatter.Format(parser.Parse("x [1.0, 2.0] * y [1.0, 2.0]")));
123      Assert.AreEqual("('x'[1] * 'y')",formatter.Format(parser.Parse("x[1] * y")));
124      Assert.AreEqual("('x'[1, 2] * 'y'[1, 2])",formatter.Format(parser.Parse("x[1, 2] * y [1, 2]")));
125      Assert.AreEqual("('x'[1] * 'y')",formatter.Format(parser.Parse("x [+1.0] * y")));
126      Assert.AreEqual("('x'[-1] * 'y')",formatter.Format(parser.Parse("x [-1.0] * y")));
127      Assert.AreEqual("('x'[-1, -2] * 'y'[1, 2])", formatter.Format(parser.Parse("x [-1.0, -2.0] * y [+1.0, +2.0]")));
128
129      // one-hot for factor
130      Assert.AreEqual("('x' = 'val' * 'y')",formatter.Format(parser.Parse("x='val' * y")));
131      Assert.AreEqual("'x' = 'val'",formatter.Format(parser.Parse("x = 'val'")));
132      Assert.AreEqual("'x' = 'val'",formatter.Format(parser.Parse("x = \"val\"")));
133      Assert.AreEqual("(1 * 'x' = 'val')",formatter.Format(parser.Parse("1.0 * x = val")));
134      Assert.AreEqual("((-1) * 'x' = 'val')",formatter.Format(parser.Parse("-1.0 * x = val")));
135      Assert.AreEqual("((1 * 'x' = 'val1') + 'y' = 'val2')", formatter.Format(parser.Parse("+1.0 * \"x\" = val1 + y = \"val2\"")));
136
137      // numeric parameters
138      Assert.AreEqual("0", formatter.Format(parser.Parse("<num>"))); // default initial value is zero
139      Assert.AreEqual("0", formatter.Format(parser.Parse("< num >")));
140      Assert.AreEqual("1", formatter.Format(parser.Parse("< num=1.0>")));
141      Assert.AreEqual("1", formatter.Format(parser.Parse("< num = 1.0>")));
142      Assert.AreEqual("(-1)", formatter.Format(parser.Parse("< num =-1.0>")));
143      Assert.AreEqual("(-1)", formatter.Format(parser.Parse("< num = - 1.0>")));
144     
145      // numeric parameter with sign
146      Assert.AreEqual("1", formatter.Format(parser.Parse("-<num=-1.0>")));
147    }
148  }
149}
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