156 lines
6.0 KiB
HTML
156 lines
6.0 KiB
HTML
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<title>NUnit - ParameterizedTests</title>
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<h2>Parameterized Tests</h2>
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<p>NUnit 2.5 supports parameterized tests. Test methods
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may have parameters and various attributes are available
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to indicate what arguments should be supplied by NUnit.
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<p>Multiple sets of arguments cause the creation of multiple
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tests. All arguments are created at the point of loading the
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tests, so the individual test cases are available for
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display and selection in the Gui, if desired.
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<p>Some attributes allow you to specify arguments inline - directly on
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the attribute - while others use a separate method, property or field
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to hold the arguments. In addition, some attributes identify complete test cases,
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including all the necessary arguments, while others only provide data
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for a single argument. This gives rise to four groups of attributes,
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as shown in the following table.
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<table class="nunit">
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<tr><th></th><th>Complete Test Cases</th><th>Data for One Argument</th></tr>
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<tr><th>Inline</th>
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<td><a href="testCase.html">TestCaseAttribute</a></td>
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<td><a href="random.html">RandomAttribute</a><br>
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<a href="range.html">RangeAttribute</a><br>
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<a href="values.html">ValuesAttribute</a></td></tr>
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<tr><th>Separate</th>
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<td><a href="testCaseSource.html">TestCaseSourceAttribute</a></td>
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<td><a href="valueSource.html">ValueSourceAttribute</a></td></tr>
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</table>
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<p>In addition, when data is specified for individual arguments, special attributes
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may be added to the test method itself in order to tell NUnit how
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to go about combining the arguments. Currently, the following attributes
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are provided:
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<ul>
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<li><a href="combinatorial.html">CombinatorialAttribute</a> (default)
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<li><a href="pairwise.html">PairwiseAttribute</a><li><a href="sequential.html">SequentialAttribute</a></ul>
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<h3>Order of Execution</h3>
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<p>In NUnit 2.5, individual test cases are sorted alphabetically and executed in
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that order. With NUnit 2.5.1, the individual cases are not sorted, but are
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executed in the order in which NUnit discovers them. This order does <b>not</b>
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follow the lexical order of the attributes and will often vary between different
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compilers or different versions of the CLR.
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<p>The following specific rules for ordering apply:
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<ol>
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<li>If all arguments are specified in a <b>single TestCaseSource</b> attribute,
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the ordering of the cases provided will be maintained.
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<li>If each parameter has a <b>single Values</b>, <b>ValueSource</b> or
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<b>Range</b> attribute and the <b>Sequential</b> combining strategy
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is used - or there is only one argument - the ordering will be maintained.
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<li>In all other cases, including using multiple <b>TestCase</b> attributes
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or a combination of different types of attributes, the ordering of the
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test cases is undefined.
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Copyright © 2010 Charlie Poole. All Rights Reserved.
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