NUnit TestCase with Generics

Question

Is there any way to pass generic types using a TestCase to a test in NUnit?

This is what I would like to do but the syntax is not correct...

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Answer 1

You can make custom GenericTestCaseAttribute

[Test]
[GenericTestCase(typeof(MyClass) ,"Some response", TestName = "Test1")]
[GenericTestCase(typeof(MyClass1) ,"Some response", TestName = "Test2")]
public void MapWithInitTest(string expectedResponse)
{
    // Arrange

    // Act
    var response = MyClassUnderTest.MyMethod();

    // Assert
    Assert.AreEqual(expectedResponse, response);
}

Here is implementation of GenericTestCaseAttribute

[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
public class GenericTestCaseAttribute : TestCaseAttribute, ITestBuilder
{
    private readonly Type _type;
    public GenericTestCaseAttribute(Type type, params object[] arguments) : base(arguments)
    {
        _type = type;
    }

    IEnumerable ITestBuilder.BuildFrom(IMethodInfo method, Test suite)
    {
        if (method.IsGenericMethodDefinition && _type != null)
        {
            var gm = method.MakeGenericMethod(_type);
            return BuildFrom(gm, suite);
        }
        return BuildFrom(method, suite);
    }
}