Retry Attribute - jnm2/nunit-docs-wiki GitHub Wiki
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:
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It is not currently possible to use RetryAttribute on a TestFixture or any other type of test suite. Only single tests may be repeated.
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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.