143 lines
5.2 KiB
HTML
143 lines
5.2 KiB
HTML
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<title>NUnit - Datapoint</title>
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<h3>DatapointAttribute / DatapointsAttribute (NUnit 2.5) (Experimental)</h3>
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<p>The <b>Datapoint</b> and <b>Datapoints</b> attributes are used
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to provide data for <b>Theories</b> and are ignored for ordinary
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tests - including tests with parameters.
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<h4>DataPointAttribute</h4>
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<p>When a Theory is loaded, NUnit creates arguments for each
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of its parameters by using any fields of the same type
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as the parameter annotated with the <b>DatapointAttribute</b>.
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Fields must be members of the class containing the Theory
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and their Type must exactly match the argument for which
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data is being supplied.
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<h4>DataPointsAttribute</h4>
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<p>In addition to specifying individual datapoints, collections of
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datapoints may be provided by use of the <b>DatapointsAttribute</b>
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- note the spelling. This attribute may be placed on methods or
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properties in addition to fields. The returned value must be
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either an array of the required type or (beginning with NUnit
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2.5.5) an <b>IEnumerable<T></b> returning an enumeration
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of the required type. The data Type must exactly match the argument
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for which data is being supplied.
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<h4>Automatically Supplied Datapoints</h4>
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<p>It is normally not necessary to specify datapoints for
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<b>boolean</b> or <b>enum</b> arguments. Beginning with
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version 2.5.4, NUnit automatically supplies values of <b>true</b>
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and <b>false</b> for <b>boolean</b> arguments and will supply all
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defined values of any enumeration.
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<p>If for some reason you don't wish to use all possible values, you
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can override this behavior by supplying your own datapoints. If you
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supply any datapoints for an argument, automatic datapoint generation
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is suppressed.
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<h4>Example</h4>
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<p>For an example of use, see <a href="theory.html">TheoryAttribute</a>.
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<h4>See also...</h4>
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