244 lines
7.1 KiB
HTML
244 lines
7.1 KiB
HTML
<!-- saved from url=(0014)about:internet --><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
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<title>NUnit - Property</title>
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<script language="JavaScript" src="codeFuncs.js" ></script> <!-- Do it this way for IE -->
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<h3>PropertyAttribute (NUnit 2.4)</h3>
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<p>The Property attribute provides a generalized approach to setting named
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properties on any test case or fixture, using a name/value pair.</p>
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<p>In the example below, the fixture class MathTests is given a Location
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value of 723 while the test case AdditionTest is given a Severity
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of "Critical"</p>
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<h4>Example:</h4>
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<div class="code">
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<div class="langFilter">
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<a href="javascript:Show('DD1')" onmouseover="Show('DD1')"><img src="img/langFilter.gif" width="14" height="14" alt="Language Filter"></a>
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<div id="DD1" class="dropdown" style="display: none" onclick="Hide('DD1')">
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<a href="javascript:ShowCS()">C#</a><br>
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<a href="javascript:ShowVB()">VB</a><br>
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<a href="javascript:ShowMC()">C++</a><br>
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<a href="javascript:ShowJS()">J#</a><br>
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</div>
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</div>
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<pre class="cs">namespace NUnit.Tests
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{
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using System;
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using NUnit.Framework;
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[TestFixture, Property("Location",723)]
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public class MathTests
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{
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[Test, Property("Severity", "Critical")]
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public void AdditionTest()
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{ /* ... */ }
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}
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}
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</pre>
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<pre class="vb">Imports System
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Imports Nunit.Framework
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Namespace Nunit.Tests
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<TestFixture(), Property("Location",723)>
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Public Class MathTests
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<Test(), Property("Severity","Critical")>
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Public Sub AdditionTest()
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' ...
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End Sub
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End Class
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End Namespace
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</pre>
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<pre class="mc">#using <Nunit.Framework.dll>
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using namespace System;
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using namespace NUnit::Framework;
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namespace NUnitTests
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{
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[TestFixture, Property("Location",723)]
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public __gc class MathTests
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{
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[Test, Property("Severity","Critical")] void AdditionTest();
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};
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}
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#include "cppsample.h"
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namespace NUnitTests {
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// ...
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}
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</pre>
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<pre class="js">package NUnit.Tests;
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import System.*;
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import NUnit.Framework.TestFixture;
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/** @attribute NUnit.Framework.TestFixture() */
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/** @attribute NUnit.Framework.Property("Location",723) */
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public class MathTests
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{
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/** @attribute NUnit.Framework.Test() */
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/** @attribute NUnit.Framework.Property("Severity","Critical") */
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public void AdditionTest()
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{ /* ... */ }
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}
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</pre>
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</div>
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<h4>Usage Note</h4>
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<p>The PropertyAttribute is not used for any purpose by NUnit itself, but
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it does display them in the XML output file and in the Test Properties
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dialog of the gui.</p>
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<p>It is
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possible to write extensions that access the value of specific properties.
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It is also possible to access the value of properties from within a test
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using reflection.</p>
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<h3>Custom Property Attributes</h3>
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<p>Users can define custom
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attributes that derive from <b>PropertyAttribute</b> and have them
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recognized by NUnit. PropertyAttribute provides a protected constructor
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that takes the value of the property and sets the property name to the
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name of the derived class. NUnit itself uses this facility: some of
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it's specialized attributes are actually specializations of <b>PropertyAttribute</b>.
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<p>Here's an example that creates a Severity property. It works
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just like any other property, but has a simpler syntax and is type-safe.
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A test reporting system might make use of the property to provide special reports.
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<div class=code><pre>
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public enum SeverityLevel
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{
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Critical,
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Major,
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Normal,
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Minor
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}
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[AttributeUsage(AttributeTargets.Method, AllowMultiple=false)]
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public class SeverityAttribute : PropertyAttribute
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{
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public SeverityAttribute( SeverityLevel level )
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: base( level );
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}
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...
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[Test, Severity( SeverityLevel.Critical)]
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public void MyTest()
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{ /*...*/ }
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</pre></div>
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<p>Beginning with NUnit 2.5, a property attribute is able to contain
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multiple name/value pairs. This capability is not exposed publicly
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but may be used by derived property classes. NUnit uses this
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feature itself for certain attributes. See, for example,
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<a href="requiresThread.html">RequiresThreadAttribute</a>.
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