106 lines
3.6 KiB
HTML
106 lines
3.6 KiB
HTML
<!-- saved from url=(0014)about:internet --><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
|
|
<html>
|
|
<!-- Standard Head Part -->
|
|
<head>
|
|
<title>NUnit - Assertions</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>Assertions</h2>
|
|
|
|
<p>Assertions are central to unit testing in any of the xUnit frameworks, and NUnit
|
|
is no exception. NUnit provides a rich set of assertions as static methods of
|
|
the Assert class.</p>
|
|
|
|
<p>If an assertion fails, the method call does not return and an error is reported.
|
|
If a test contains multiple assertions, any that follow the one that failed
|
|
will not be executed. For this reason, it's usually best to try for one
|
|
assertion per test.</p>
|
|
|
|
<p>Each method may be called without a message, with a simple text message or with
|
|
a message and arguments. In the last case the message is formatted using the
|
|
provided text and arguments.</p>
|
|
|
|
<h3>Two Models</h3>
|
|
|
|
<p>Before NUnit 2.4, a separate method of the Assert class was used for each
|
|
different assertion. We call this the "Classic Model." It
|
|
continues to be supported in NUnit, since many people prefer it.</p>
|
|
|
|
<p>Beginning with NUnit 2.4, a new "Constraint-based" model was
|
|
introduced. This approach uses a single method of the Assert class
|
|
for all assertions, passing a <a href="constraintModel.html">Constraint</a> object that specifies the test to be performed.
|
|
|
|
<p>This constraint-based model is now used internally by NUnit
|
|
for all assertions. The methods of the classic approach have been
|
|
re-implemented on top of this new model.
|
|
|
|
<!--
|
|
<h4>See Also...</h4>
|
|
<ul>
|
|
<li>
|
|
</ul>
|
|
-->
|
|
|
|
</div>
|
|
|
|
<!-- Submenu -->
|
|
<div id="subnav">
|
|
<ul>
|
|
<li><a href="index.html">NUnit 2.5.9</a></li>
|
|
<ul>
|
|
<li><a href="getStarted.html">Getting Started</a></li>
|
|
<li id="current"><a href="assertions.html">Assertions</a></li>
|
|
<ul>
|
|
<li><a href="equalityAsserts.html">Equality Asserts</a></li>
|
|
<li><a href="identityAsserts.html">Identity Asserts</a></li>
|
|
<li><a href="conditionAsserts.html">Condition Asserts</a></li>
|
|
<li><a href="comparisonAsserts.html">Comparison Asserts</a></li>
|
|
<li><a href="typeAsserts.html">Type Asserts</a></li>
|
|
<li><a href="exceptionAsserts.html">Exception Asserts</a></li>
|
|
<li><a href="utilityAsserts.html">Utility Methods</a></li>
|
|
<li><a href="stringAssert.html">String Assert</a></li>
|
|
<li><a href="collectionAssert.html">Collection Assert</a></li>
|
|
<li><a href="fileAssert.html">File Assert</a></li>
|
|
<li><a href="directoryAssert.html">Directory Assert</a></li>
|
|
</ul>
|
|
<li><a href="constraintModel.html">Constraints</a></li>
|
|
<li><a href="attributes.html">Attributes</a></li>
|
|
<li><a href="runningTests.html">Running Tests</a></li>
|
|
<li><a href="extensibility.html">Extensibility</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 © 2010 Charlie Poole. All Rights Reserved.
|
|
</div>
|
|
<!-- End of Footer -->
|
|
|
|
</body>
|
|
</html>
|