mcs/class/Mono.CodeContracts/Test/Mono.CodeContracts.Static/SequenceTests.cs

   1 //
   2 // SequenceTests.cs
   3 //
   4 // Authors:
   5 //      Alexander Chebaturkin (chebaturkin@gmail.com)
   6 //
   7 // Copyright (C) 2012 Alexander Chebaturkin
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using Mono.CodeContracts.Static.DataStructures;
  30
  31 using NUnit.Framework;
  32
  33 namespace MonoTests.Mono.CodeContracts {
  34         [TestFixture]
  35         public class SequenceTests {
  36                 readonly Sequence<int> empty = Sequence<int>.Empty;
  37
  38                 [Test]
  39                 public void FromListShouldCreateSequenceInOrder ()
  40                 {
  41                         Sequence<int> seq = Sequence<int>.From (1, 2, 3);
  42
  43                         Assert.That (seq.Length (), Is.EqualTo (3));
  44                         Assert.That (seq.Head, Is.EqualTo (1));
  45                         Assert.That (seq.Tail.Head, Is.EqualTo (2));
  46                         Assert.That (seq.Tail.Tail.Head, Is.EqualTo (3));
  47                 }
  48
  49                 [Test]
  50                 public void MultipleConsAreInsertedAsAStack ()
  51                 {
  52                         Sequence<int> seq = this.empty.Cons (1).Cons (2).Cons (3);
  53
  54                         Assert.That (seq.Head, Is.EqualTo (3));
  55                         Assert.That (seq.Tail.Head, Is.EqualTo (2));
  56                         Assert.That (seq.Tail.Tail.Head, Is.EqualTo (1));
  57                 }
  58
  59                 [Test]
  60                 public void ReverseShouldReverse ()
  61                 {
  62                         Sequence<int> seq = Sequence<int>.From (1, 2);
  63                         Sequence<int> reversed = seq.Reverse ();
  64
  65                         Assert.That (reversed.Length (), Is.EqualTo (2));
  66                         Assert.That (reversed.Head, Is.EqualTo (2));
  67                         Assert.That (reversed.Tail.Head, Is.EqualTo (1));
  68                 }
  69
  70                 [Test]
  71                 public void ShouldHasCountEq1WithOneElement ()
  72                 {
  73                         Sequence<int> seq = Sequence<int>.From (5);
  74
  75                         Assert.That (seq.Length (), Is.EqualTo (1));
  76                         Assert.That (seq.Head, Is.EqualTo (5));
  77                         Assert.That (seq.Tail, Is.Null);
  78                 }
  79         }
  80 }