A method is identified as a test method if it is marked with one of the following attributes:
-
[TestMethod] or [DataTestMethod] (for MSTest).
-
[Fact] or [Theory] (for xUnit).
-
[Test], [TestCase], [TestCaseSource], or [Theory] (for NUnit).
However, non-public methods are not considered test methods and will not be executed, regardless of whether they have a test
attribute. Additionally, methods with the async void modifier or methods that contain generics <T> anywhere in their
signatures are also excluded from being recognized as tests and will not be executed.
[TestMethod]
void TestNullArg() // Noncompliant, method is not public
{ /* ... */ }
[TestMethod]
public async void MyIgnoredTestMethod() // Noncompliant, this is an 'async void' method
{ /* ... */ }
[TestMethod]
public void MyIgnoredGenericTestMethod<T>(T foo) // Noncompliant, method has generics in its signature
{ /* ... */ }
[TestMethod]
public void TestNullArg()
{ /* ... */ }
[TestMethod]
public async Task MyIgnoredTestMethod()
{ /* ... */ }
[TestMethod]
public void MyIgnoredGenericTestMethod(int foo)
{ /* ... */ }
Exceptions
For xUnit, accessibility is disregarded when it comes to [Fact] test methods, as they do not necessarily need to be
declared as public.
In xUnit, [Theory] test methods, as well as [TestCase] and [TestCaseSource] test methods in
NUnit, have the flexibility to be generic, allowing for a wider range of test scenarios.
