102 строки
3.4 KiB
HTML
102 строки
3.4 KiB
HTML
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<h2>List Mapper (NUnit 2.4.2)</h2>
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<p>Unlike Constraint classes, <b>ListMapper</b> is used to modify the actual
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value argument to Assert.That(). It transforms the actual value, which
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must be a collection, creating a new collection to be tested against the
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supplied constraint. Currently, ListMapper supports one transformation: creating
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a collection of property values.
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<p>Normally, ListMapper will be used through the <b>List.Map()</b> syntax helper
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or the inherited syntax equivalent, <b>Map()</b>. The following example
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shows three forms of the same assert:
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<div class="code"><pre>
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string[] strings = new string[] { "a", "ab", "abc" };
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int[] lengths = new int[] { 1, 2, 3 };
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Assert.That(List.Map(strings).Property("Length"),
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Is.EqualTo(lengths));
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Assert.That(new ListMapper(strings).Property("Length"),
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Is.EqualTo(lengths));
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// Assuming inheritance from AssertionHelper
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Expect(Map(strings).Property("Length"), EqualTo(lengths));
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