MSTEST0043: Use retry attribute on test method

Cause

A method or class has an attribute that derives from RetryBaseAttribute but isn't a test method or test class.

Rule description

RetryBaseAttribute supplies retry policy for test execution. It doesn't declare a test or turn a helper or lifecycle method into a test. MSTest applies the policy when it invokes a test method, not when it calls an arbitrary method.

Starting with MSTest 4.3, retry attributes can also apply to a class marked with [TestClass] or a derived attribute. A class-level retry policy applies to the class's tests; it doesn't retry a lifecycle callback as an independent test. Earlier versions support retry attributes only on test methods.

How to fix violations

Add [TestMethod] to an intended test method or, in MSTest 4.3 and later, [TestClass] to an intended test class. If the target isn't intended to declare tests, remove the retry attribute instead.

When to suppress warnings

Do not suppress a warning from this rule.