1 // 2 // MonoTests.System.Collections.Generic.Test.ComparerTest 3 // 4 // Authors: 5 // Gert Driesen (drieseng@users.sourceforge.net) 6 // 7 // Copyright (C) 2007 Gert Driesen 8 // Copyright 2011 Xamarin Inc (http://www.xamarin.com). 9 // 10 // Permission is hereby granted, free of charge, to any person obtaining 11 // a copy of this software and associated documentation files (the 12 // "Software"), to deal in the Software without restriction, including 13 // without limitation the rights to use, copy, modify, merge, publish, 14 // distribute, sublicense, and/or sell copies of the Software, and to 15 // permit persons to whom the Software is furnished to do so, subject to 16 // the following conditions: 17 // 18 // The above copyright notice and this permission notice shall be 19 // included in all copies or substantial portions of the Software. 20 // 21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 28 // 29 30 using System.Collections; 31 using System.Collections.Generic; 32 using System.IO; 33 using System.Runtime.Serialization.Formatters.Binary; 34 35 using NUnit.Framework; 36 using System; 37 38 namespace MonoTests.System.Collections.Generic 39 { 40 [TestFixture] 41 public class ComparerTest 42 { 43 class CustomComparer : IComparable, IComparable<object> 44 { CompareTo(object other)45 int IComparable<object>.CompareTo (object other) 46 { 47 throw new NotImplementedException (); 48 } 49 IComparable.CompareTo(object obj)50 int IComparable.CompareTo (object obj) 51 { 52 return 9; 53 } 54 } 55 56 [Test] Create()57 public void Create () 58 { 59 var comparer = Comparer<int>.Create ((a, b) => a - b); 60 Assert.AreEqual (-1, comparer.Compare (1, 2), "#1"); 61 } 62 63 [Test] Create_Invalid()64 public void Create_Invalid () 65 { 66 try { 67 Comparer<int>.Create (null); 68 Assert.Fail ("#1"); 69 } catch (ArgumentNullException) { 70 } 71 } 72 73 [Test] DefaultComparer_UserComparable()74 public void DefaultComparer_UserComparable () 75 { 76 IComparer c = Comparer<object>.Default; 77 Assert.AreEqual (-9, c.Compare (new object (), new CustomComparer ()), "#1"); 78 Assert.AreEqual (9, c.Compare (new CustomComparer (), new object ()), "#2"); 79 } 80 81 [Test] DefaultComparer_NotComparableArgument()82 public void DefaultComparer_NotComparableArgument () 83 { 84 IComparer c = Comparer<object>.Default; 85 try { 86 c.Compare (new object (), new object ()); 87 Assert.Fail ("#1"); 88 } catch (ArgumentException) { 89 } 90 91 var o = new object (); 92 Assert.AreEqual (0, c.Compare (o, o), "#2"); 93 } 94 95 96 97 [Test] DeserializeDefault()98 public void DeserializeDefault () 99 { 100 MemoryStream ms = new MemoryStream (); 101 ms.Write (_serializedDefault, 0, _serializedDefault.Length); 102 ms.Position = 0; 103 104 BinaryFormatter bf = new BinaryFormatter (); 105 Comparer<int> c = (Comparer<int>) bf.Deserialize (ms); 106 Assert.IsNotNull (c); 107 } 108 109 private static readonly byte [] _serializedDefault = new byte [] { 110 0x00, 0x01, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 111 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00, 112 0x89, 0x01, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x43, 0x6f, 113 0x6c, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x47, 114 0x65, 0x6e, 0x65, 0x72, 0x69, 0x63, 0x2e, 0x47, 0x65, 0x6e, 0x65, 115 0x72, 0x69, 0x63, 0x43, 0x6f, 0x6d, 0x70, 0x61, 0x72, 0x65, 0x72, 116 0x60, 0x31, 0x5b, 0x5b, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 117 0x49, 0x6e, 0x74, 0x33, 0x32, 0x2c, 0x20, 0x6d, 0x73, 0x63, 0x6f, 118 0x72, 0x6c, 0x69, 0x62, 0x2c, 0x20, 0x56, 0x65, 0x72, 0x73, 0x69, 119 0x6f, 0x6e, 0x3d, 0x32, 0x2e, 0x30, 0x2e, 0x30, 0x2e, 0x30, 0x2c, 120 0x20, 0x43, 0x75, 0x6c, 0x74, 0x75, 0x72, 0x65, 0x3d, 0x6e, 0x65, 121 0x75, 0x74, 0x72, 0x61, 0x6c, 0x2c, 0x20, 0x50, 0x75, 0x62, 0x6c, 122 0x69, 0x63, 0x4b, 0x65, 0x79, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x3d, 123 0x62, 0x37, 0x37, 0x61, 0x35, 0x63, 0x35, 0x36, 0x31, 0x39, 0x33, 124 0x34, 0x65, 0x30, 0x38, 0x39, 0x5d, 0x5d, 0x00, 0x00, 0x00, 0x00, 125 0x0b }; 126 } 127 } 128