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namespace  Microsoft.VisualStudio.TestTools.UnitTesting
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    public static class AssertEx
    {

        /// <summary>
        /// Verifies that the specified exception type is thrown.
        /// </summary>
        /// <typeparam name="TException">The type of the expected exception.</typeparam>
        /// <param name="action">The action.</param>
        public static void Throws<TException>(Action action) where TException: Exception
        {
            try
            {
                action();
                Assert.Fail("No expected '{0}' exception thrown.", typeof(TException));
            }
            catch (TException)
            {
                // expected exception
            }
        }
    }
}