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diff --git a/tools/NUnit/doc/valueSource.html b/tools/NUnit/doc/valueSource.html new file mode 100644 index 0000000..6c423c2 --- /dev/null +++ b/tools/NUnit/doc/valueSource.html @@ -0,0 +1,157 @@ +<!-- saved from url=(0014)about:internet --><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> +<html> +<!-- Standard Head Part --> +<head> +<title>NUnit - ValueSource</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"> + +<script language="JavaScript" src="codeFuncs.js" ></script> <!-- Do it this way for IE --> + +<h3>ValueSourceAttribute (NUnit 2.5)</h3> + +<p><b>ValueSourceAttribute</b> is used on individual parameters of a test method to +identify a named source for the argument values to be supplied. The attribute has +two public constructors. + +<div class="code"> +<pre> +ValueSourceAttribute(Type sourceType, string sourceName); +ValueSourceAttribute(string sourceName); +</pre> +</div> + +<p>If <b>sourceType</b> is specified, it represents the class that provides +the data. It must have a default constructor. + +<p>If <b>sourceType</b> is not specified, the class containing the test +method is used. NUnit will construct it using either the default constructor +or - if arguments are provided - the appropriate constructor for those +arguments. + +<p>The <b>sourceName</b>, represents the name of the source that will +provide the arguments. It should have the following characteristics: +<ul> +<li>It may be a field, a non-indexed property or a method taking no arguments. +<li>It may be either an instance or a static member. +<li>It must return an IEnumerable or a type that implements IEnumerable. +<li>The individual items returned from the enumerator must be compatible + with the type of the parameter on which the attribute appears. +</ul> + +<h3>Order of Execution</h3> + +<p>In NUnit 2.5, individual test cases are sorted alphabetically and executed in + that order. With NUnit 2.5.1, the individual cases are not sorted, but are + executed in the order in which NUnit discovers them. This order does <b>not</b> + follow the lexical order of the attributes and will often vary between different + compilers or different versions of the CLR. + +<p>As a result, when <b>ValueSourceAttribute</b> appears multiple times on a + parameter or when other data-providing attributes are used in combination with + <b>ValueSourceAttribute</b>, the order of the arguments is undefined. + +<p>However, when a single <b>ValueSourceAttribute</b> is used by itself, + the order of the arguments follows exactly the order in which the data + is returned from the source. + +<h3>Note on Object Construction</h3> + +<p>NUnit locates the test cases at the time the tests are loaded, creates +instances of each class with non-static sources and builds a list of +tests to be executed. Each source object is only created once at this +time and is destroyed after all tests are loaded. + +<p>If the data source is in the test fixture itself, the object is created +using the appropriate constructor for the fixture parameters provided on +the <b>TestFixtureAttribute</b>, or +the default constructor if no parameters were specified. 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