mcs/class/System/Test/System.Text.RegularExpressions/RegexBugs.cs

   1 //
   2 // MonoTests.System.Text.RegularExpressions misc. test cases
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (c) Copyright 2003,2004 Novell, Inc. (http://www.novell.com)
   8 //
   9
  10 using NUnit.Framework;
  11 using System;
  12 using System.Text.RegularExpressions;
  13
  14 namespace MonoTests.System.Text.RegularExpressions
  15 {
  16         [TestFixture]
  17         public class RegexBugs : Assertion
  18         {
  19                 [Test]
  20                 public void SplitGroup () // bug51146
  21                 {
  22                         string [] splitResult = new Regex ("-").Split ("a-bcd-e-fg");
  23                         string [] expected = new string [] {"a", "bcd", "e", "fg"};
  24                         int length = expected.Length;
  25                         int i;
  26                         AssertEquals ("#01", length, splitResult.Length);
  27                         for (i = 0; i < length; i++)
  28                                 AssertEquals ("#02 " + i, expected [i], splitResult [i]);
  29
  30                         splitResult = new Regex ("(-)").Split ("a-bcd-e-fg");
  31                         expected = new string [] {"a", "-", "bcd", "-", "e", "-", "fg"};
  32                         length = expected.Length;
  33                         AssertEquals ("#03", length, splitResult.Length);
  34                         for (i = 0; i < length; i++)
  35                                 AssertEquals ("#04 " + i, expected [i], splitResult [i]);
  36
  37                         splitResult = new Regex ("(-)b(c)").Split ("a-bcd-e-fg");
  38                         expected = new string [] {"a", "-", "c", "d-e-fg" };
  39                         length = expected.Length;
  40                         AssertEquals ("#04", length, splitResult.Length);
  41                         for (i = 0; i < length; i++)
  42                                 AssertEquals ("#05 " + i, expected [i], splitResult [i]);
  43
  44                         splitResult = new Regex ("-").Split ("a-bcd-e-fg-");
  45                         expected = new string [] {"a", "bcd", "e", "fg", ""};
  46                         length = expected.Length;
  47                         AssertEquals ("#06", length, splitResult.Length);
  48                         for (i = 0; i < length; i++)
  49                                 AssertEquals ("#07 " + i, expected [i], splitResult [i]);
  50                 }
  51
  52                 [Test]
  53                 public void MathEmptyGroup () // bug 42529
  54                 {
  55                         string str = "Match something from here.";
  56
  57                         AssertEquals ("MEG #01", false, Regex.IsMatch(str, @"(something|dog)$"));
  58                         AssertEquals ("MEG #02", true, Regex.IsMatch(str, @"(|something|dog)$"));
  59                         AssertEquals ("MEG #03", true, Regex.IsMatch(str, @"(something||dog)$"));
  60                         AssertEquals ("MEG #04", true, Regex.IsMatch(str, @"(something|dog|)$"));
  61
  62                         AssertEquals ("MEG #05", true, Regex.IsMatch(str, @"(something|dog)*"));
  63                         AssertEquals ("MEG #06", true, Regex.IsMatch(str, @"(|something|dog)*"));
  64                         AssertEquals ("MEG #07", true, Regex.IsMatch(str, @"(something||dog)*"));
  65                         AssertEquals ("MEG #08", true, Regex.IsMatch(str, @"(something|dog|)*"));
  66
  67                         AssertEquals ("MEG #09", true, Regex.IsMatch(str, @"(something|dog)*$"));
  68                         AssertEquals ("MEG #10", true, Regex.IsMatch(str, @"(|something|dog)*$"));
  69                         AssertEquals ("MEG #11", true, Regex.IsMatch(str, @"(something||dog)*$"));
  70                         AssertEquals ("MEG #12", true, Regex.IsMatch(str, @"(something|dog|)*$"));
  71
  72                 }
  73
  74                 [Test]
  75                 public void Braces () // bug 52924
  76                 {
  77                         // Before the fix, the next line throws an exception
  78                         Regex regVar = new Regex(@"{\w+}");
  79                         Match m = regVar.Match ("{   }");
  80                         AssertEquals ("BR #01", false, m.Success);
  81                 }
  82
  83                 [Test]
  84                 public void RangeIgnoreCase() // bug 45976
  85                 {
  86                         string str = "AAABBBBAAA" ;
  87                         AssertEquals("RIC #01", true, Regex.IsMatch(str, @"[A-F]+", RegexOptions.IgnoreCase));
  88                         AssertEquals("RIC #02", true, Regex.IsMatch(str, @"[a-f]+", RegexOptions.IgnoreCase));
  89                         AssertEquals("RIC #03", true, Regex.IsMatch(str, @"[A-Fa-f]+", RegexOptions.IgnoreCase));
  90                         AssertEquals("RIC #04", true, Regex.IsMatch(str, @"[AB]+", RegexOptions.IgnoreCase));
  91                         AssertEquals("RIC #05", true, Regex.IsMatch(str, @"[A-B]+", RegexOptions.IgnoreCase));
  92
  93                         str = "AaaBBBaAa" ;
  94                         AssertEquals("RIC #06", true, Regex.IsMatch(str, @"[A-F]+", RegexOptions.IgnoreCase));
  95                         AssertEquals("RIC #07", true, Regex.IsMatch(str, @"[a-f]+", RegexOptions.IgnoreCase));
  96                         AssertEquals("RIC #08", true, Regex.IsMatch(str, @"[A-Fa-f]+", RegexOptions.IgnoreCase));
  97                         AssertEquals("RIC #09", true, Regex.IsMatch(str, @"[AB]+", RegexOptions.IgnoreCase));
  98                         AssertEquals("RIC #10", true, Regex.IsMatch(str, @"[A-B]+", RegexOptions.IgnoreCase));
  99
 100                         str = "Aaa[";
 101                         AssertEquals("RIC #11", true, Regex.IsMatch(str, @"[A-a]+", RegexOptions.IgnoreCase));
 102
 103                         str = "Ae";
 104                         Assert("RIC #12", Regex.IsMatch(str, @"[A-a]+", RegexOptions.IgnoreCase));
 105
 106                 }
 107
 108                 [Test]
 109                 public void Escape0 () // bug54797
 110                 {
 111                         Regex r = new Regex(@"^[\s\0]*$");
 112                         AssertEquals ("E0-1", true, r.Match(" \0").Success);
 113                 }
 114
 115                 [Test()]
 116                 public void MultipleMatches()
 117                 {
 118                         Regex regex = new Regex (@"^(?'path'.*(\\|/)|(/|\\))(?'file'.*)$");
 119                         Match match = regex.Match (@"d:\Temp\SomeDir\SomeDir\bla.xml");
 120
 121                         AssertEquals ("MM #01", 5, match.Groups.Count);
 122
 123                         AssertEquals ("MM #02", "1", regex.GroupNameFromNumber(1));
 124                         AssertEquals ("MM #03", "2", regex.GroupNameFromNumber(2));
 125                         AssertEquals ("MM #04", "path", regex.GroupNameFromNumber(3));
 126                         AssertEquals ("MM #05", "file", regex.GroupNameFromNumber(4));
 127
 128                         AssertEquals ("MM #06", "\\", match.Groups[1].Value);
 129                         AssertEquals ("MM #07", "", match.Groups[2].Value);
 130                         AssertEquals ("MM #08", @"d:\Temp\SomeDir\SomeDir\", match.Groups[3].Value);
 131                         AssertEquals ("MM #09", "bla.xml", match.Groups[4].Value);
 132                 }
 133
 134                 [Test]
 135                 public void SameNameGroups () // First problem in fixing bug #56000
 136                 {
 137                         string rex = "link\\s*rel\\s*=\\s*[\"']?alternate[\"']?\\s*";
 138                         rex += "type\\s*=\\s*[\"']?text/xml[\"']?\\s*href\\s*=\\s*(?:\"(?<1>[^\"]*)\"|'(?<1>[^']*)'|(?<1>\\S+))";
 139                         Regex rob = new Regex (rex, RegexOptions.IgnoreCase);
 140                 }
 141
 142                 [Test]
 143                 public void UndefinedGroup () // bug 52890
 144                 {
 145                         Regex regex = new Regex( "[A-Za-z_0-9]" );
 146                         Match m = regex.Match( "123456789abc" );
 147                         Group g = m.Groups["not_defined"];
 148                         AssertNotNull ("#0", g);
 149                         AssertEquals ("#1", 0, g.Index);
 150                         AssertEquals ("#2", 0, g.Length);
 151                         AssertEquals ("#3", "", g.Value);
 152                         Assert ("#4", !g.Success);
 153                         AssertNotNull ("#5", g.Captures);
 154                         AssertEquals ("#6", 0, g.Captures.Count);
 155                 }
 156
 157                 [Test]
 158                 public void Quantifiers1 ()
 159                 {
 160                         Regex re = new Regex ("[\\w\\W]{8,32}");
 161                         Match m = re.Match (new string ('1', 7));
 162                         AssertEquals ("#01", false, m.Success);
 163                 }
 164
 165                 [Test]
 166                 public void Quantifiers2 ()
 167                 {
 168                         Regex re = new Regex ("[\\w\\W]{8,32}");
 169                         Match m = re.Match (new string ('1', 8));
 170                         AssertEquals ("#01", true, m.Success);
 171                 }
 172
 173                 [Test]
 174                 public void Quantifiers3 ()
 175                 {
 176                         Regex re = new Regex ("[\\w\\W]{8,32}");
 177                         Match m = re.Match (new string ('1', 16));
 178                         AssertEquals ("#01", true, m.Success);
 179                 }
 180
 181                 [Test]
 182                 public void Quantifiers4 ()
 183                 {
 184                         Regex re = new Regex ("[\\w\\W]{8,32}");
 185                         Match m = re.Match (new string ('1', 32));
 186                         AssertEquals ("#01", true, m.Success);
 187                 }
 188
 189                 [Test]
 190                 public void Quantifiers5 ()
 191                 {
 192                         Regex re = new Regex ("[\\w\\W]{8,32}");
 193                         Match m = re.Match (new string ('1', 33));
 194                         AssertEquals ("#01", true, m.Success);
 195                 }
 196
 197                 [Test]
 198                 public void CategoryAndNegated () // Was a regression after first attemp to fix 59150.
 199                 {
 200                         string text = "<?xml version=\"1.0\"?>";
 201                         Regex re = new Regex ("<\\s*(\\/?)\\s*([\\s\\S]*?)\\s*(\\/?)\\s*>");
 202                         text = re.Replace (text, "{blue:&lt;$1}{maroon:$2}{blue:$3&gt;}");
 203                         AssertEquals ("#01", "{blue:&lt;}{maroon:?xml version=\"1.0\"?}{blue:&gt;}", text);
 204                 }
 205
 206                 [Test]
 207                 public void BackSpace ()
 208                 {
 209                         string text = "Go, \bNo\bGo" ;
 210                         Regex re = new Regex(@"\b[\b]");
 211                         text = re.Replace(text, " ");
 212                         AssertEquals("#01", "Go, \bNo Go", text);
 213                 }
 214         }
 215 }
 216