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TearDown Attribute

Chris Maddock edited this page Oct 23, 2018 · 3 revisions

This attribute is used inside a TestFixture to provide a common set of functions that are performed after each test method.

TearDown methods may be either static or instance methods and you may define more than one of them in a fixture. Normally, multiple TearDown methods are only defined at different levels of an inheritance hierarchy, as explained below.

So long as any SetUp method runs without error, the TearDown method is guaranteed to run. It will not run if a SetUp method fails or throws an exception.


namespace NUnit.Tests
  using System;
  using NUnit.Framework;

  public class SuccessTests
    [SetUp] public void Init()
    { /* ... */ }

    [TearDown] public void Cleanup()
    { /* ... */ }

    [Test] public void Add()
    { /* ... */ }


The TearDown attribute is inherited from any base class. Therefore, if a base class has defined a TearDown method, that method will be called after each test method in the derived class.

You may define a TearDown method in the base class and another in the derived class. NUnit will call base class TearDown methods after those in the derived classes.


  1. Although it is possible to define multiple TearDown methods in the same class, you should rarely do so. Unlike methods defined in separate classes in the inheritance hierarchy, the order in which they are executed is not guaranteed.

  2. TearDown methods may be async if running under .NET 4.0 or higher.

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