1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<html>
<!-- Standard Head Part -->
<head>
<title>NUnit - ListMapper</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<meta http-equiv="Content-Language" content="en-US">
<link rel="stylesheet" type="text/css" href="nunit.css">
<link rel="shortcut icon" href="favicon.ico">
</head>
<!-- End Standard Head Part -->
<body>
<!-- Standard Header for NUnit.org -->
<div id="header">
<a id="logo" href="http://www.nunit.org"><img src="img/logo.gif" alt="NUnit.org" title="NUnit.org"></a>
<div id="nav">
<a href="http://www.nunit.org">NUnit</a>
<a class="active" href="index.html">Documentation</a>
</div>
</div>
<!-- End of Header -->
<div id="content">
<h2>List Mapper (NUnit 2.4.2)</h2>
<p>Unlike Constraint classes, <b>ListMapper</b> is used to modify the actual
value argument to Assert.That(). It transforms the actual value, which
must be a collection, creating a new collection to be tested against the
supplied constraint. Currently, ListMapper supports one transformation: creating
a collection of property values.
<p>Normally, ListMapper will be used through the <b>List.Map()</b> syntax helper
or the inherited syntax equivalent, <b>Map()</b>. The following example
shows three forms of the same assert:
<div class="code"><pre>
string[] strings = new string[] { "a", "ab", "abc" };
int[] lengths = new int[] { 1, 2, 3 };
Assert.That(List.Map(strings).Property("Length"),
Is.EqualTo(lengths));
Assert.That(new ListMapper(strings).Property("Length"),
Is.EqualTo(lengths));
// Assuming inheritance from AssertionHelper
Expect(Map(strings).Property("Length"), EqualTo(lengths));
</pre></div>
</div>
<!-- Submenu -->
<div id="subnav">
<ul>
<li><a href="index.html">NUnit 2.4.7</a></li>
<ul>
<li><a href="getStarted.html">Getting Started</a></li>
<li><a href="assertions.html">Assertions</a></li>
<ul>
<li><a href="classicModel.html">Classic Model</a></li>
<li><a href="constraintModel.html">Constraint Model</a></li>
<ul>
<li><a href="equalConstraint.html">Equal Constraint</a></li>
<li><a href="sameasConstraint.html">SameAs Constraint</a></li>
<li><a href="conditionConstraints.html">Condition Constraints</a></li>
<li><a href="comparisonConstraints.html">Comparison Constrants</a></li>
<li><a href="typeConstraints.html">Type Constraints</a></li>
<li><a href="stringConstraints.html">String Constraints</a></li>
<li><a href="collectionConstraints.html">Collection Constraints</a></li>
<li><a href="propertyConstraint.html">Property Constraint</a></li>
<li><a href="compoundConstraints.html">Compound Constraints</a></li>
<li><a href="customConstraints.html">Custom Constraints</a></li>
<li id="current"><a href="listMapper.html">List Mapper</a></li>
</ul>
</ul>
<li><a href="attributes.html">Attributes</a></li>
<li><a href="nunit-console.html">Console Runner</a></li>
<li><a href="nunit-gui.html">Gui Runner</a></li>
<li><a href="features.html">Other Features</a></li>
<li><a href="releaseNotes.html">Release Notes</a></li>
<li><a href="samples.html">Samples</a></li>
<li><a href="license.html">License</a></li>
</ul>
</ul>
</div>
<!-- End of Submenu -->
<!-- Standard Footer for NUnit.org -->
<div id="footer">
Copyright © 2008 Charlie Poole. All Rights Reserved.
</div>
<!-- End of Footer -->
</body>
</html>
|
