NUnit – cleanup after test failure

Since version 2.5.7, NUnit allows Teardown to detect if last test failed.
A new TestContext class allows tests to access information about themselves including the TestStauts.

For more details, please refer to http://nunit.org/?p=releaseNotes&r=2.5.7

[TearDown]
public void TearDown()
{
    if (TestContext.CurrentContext.Result.Status == TestStatus.Failed)
    {
        PerformCleanUpFromTest();
    }
}