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NUnit–TestCase vs TestCaseSource

NUnit supports parameterized tests through the TestCase attribute. This allows you to specify multiple sets of arguments and will create multiple tests behind the scenes:

However the kind of information that you can pass on through an attribute is rather limited. If you want to pass on complex objects you need a different solution. In that case (no pun intended) you can use the TestCaseSource attribute:

TestCaseSourceAttribute is used on a parameterized test method to identify the source from which the required arguments will be provided. The attribute additionally identifies the method as a test method. The data is kept separate from the test itself and may be used by multiple test methods.

An example:

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