A simple way of wrapping a test in a time measuring scope.

MeasureTimeAttribute.cs

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
public class MeasureTimeAttribute : Attribute, ITestAction
{
    private const string Key = "stopWatch";

    public void BeforeTest(TestDetails testDetails)
    {
        TestContext.CurrentContext.Test.Properties[Key] = Stopwatch.StartNew();
    }

    public void AfterTest(TestDetails testDetails)
    {
        var sw = (Stopwatch) TestContext.CurrentContext.Test.Properties[Key];
        sw.Stop();

        Console.WriteLine("Test took: " + sw.Elapsed.ToString("g"));
    }

    public ActionTargets Targets { get{return ActionTargets.Test;}}
}