Retry

RetryAttribute is used on a test method to specify that it should be rerun if it fails, up to a maximum number of times.

Notes:

1. The argument you specify is the total number of attempts and not the number of retries after an initial failure. So [Retry(1)] does nothing and should not be used.
2. It is not currently possible to use RetryAttribute on a TestFixture or any other type of test suite. Only single tests may be repeated.
3. If a test has an unexpected exception, an error result is returned and it is not retried. Only assertion failures can trigger a retry. To convert an unexpected exception into an assertion failure, see the ThrowsConstraint.