1using System;
 2using System.Collections.Generic;
 3using System.Linq;
 4using Machine.Specifications;
 5
 6namespace specs
 7{
 8  static public class Assertions
 9  {
10    static public void should_be_equal_to<T>(this T item_to_validate, T expected_value)
11    {
12      item_to_validate.ShouldEqual(expected_value);
13    }
14
15    static public void should_be_the_same_instance_as<T>(this T left, T right)
16    {
17      ReferenceEquals(left, right).ShouldBeTrue();
18    }
19
20    static public void should_be_null<T>(this T item)
21    {
22      item.ShouldBeNull();
23    }
24
25    static public void should_not_be_null<T>(this T item) where T : class
26    {
27      item.ShouldNotBeNull();
28    }
29
30    static public void should_be_greater_than<T>(this T actual, T expected) where T : IComparable
31    {
32      actual.ShouldBeGreaterThan(expected);
33    }
34
35    static public void should_be_less_than(this int actual, int expected)
36    {
37      actual.ShouldBeLessThan(expected);
38    }
39
40    static public void should_contain<T>(this IEnumerable<T> items_to_peek_in_to, T items_to_look_for)
41    {
42      items_to_peek_in_to.Contains(items_to_look_for).should_be_true();
43    }
44
45    static public void should_not_contain<T>(this IEnumerable<T> items_to_peek_into, T item_to_look_for)
46    {
47      items_to_peek_into.Contains(item_to_look_for).should_be_false();
48    }
49
50    //static public void should_be_an_instance_of<T>(this object item)
51    //{
52    //item.should_be_an_instance_of(typeof (T));
53    //}
54
55    //static public void should_be_an_instance_of(this object item, Type type)
56    //{
57    //item.ShouldBe(type);
58    //}
59
60    static public void should_have_thrown<TheException>(this Action action) where TheException : Exception
61    {
62      typeof (TheException).ShouldBeThrownBy(action);
63    }
64
65    static public void should_be_true(this bool item)
66    {
67      item.ShouldBeTrue();
68    }
69
70    static public void should_be_false(this bool item)
71    {
72      item.ShouldBeFalse();
73    }
74
75    static public void should_contain<T>(this IEnumerable<T> items, params T[] items_to_find)
76    {
77      foreach (var item_to_find in items_to_find)
78      {
79        items.should_contain(item_to_find);
80      }
81    }
82
83    static public void should_only_contain<T>(this IEnumerable<T> items, params T[] itemsToFind)
84    {
85      items.Count().should_be_equal_to(itemsToFind.Length);
86      items.should_contain(itemsToFind);
87    }
88
89    static public void should_be_equal_ignoring_case(this string item, string other)
90    {
91      item.ShouldBeEqualIgnoringCase(other);
92    }
93  }
94}