Question

In nUnit, SetUpFixture allowed me to run some code before any tests. Is there anything like that when using xUnit?

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From nUnit documentation:

This is the attribute that marks a class that contains the one-time setup or teardown methods for all the test fixtures under a given namespace.

Answer 1

xUnit’s comparison table shows that where you would use [TestFixtureSetUp] in NUnit, you make your test fixture class implement IUseFixture<T>.

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If [TestFixtureSetUp] isn’t the attribute you’re looking for, then the header at the beginning of the compatibility table indicates that there is no equivalent:

Note: any testing framework attributes that are not in this list have no corresponding attribute in xUnit.net.