Assert exception from NUnit to MS TEST

Question

I have some tests where i am checking for parameter name in exception. How do i write this in MS TEST?

ArgumentNullExc         


        

Answer 1

Shameless plug, but I wrote a simple assembly that makes asserting exceptions and exception messages a little easier and more readable in MSTest using Assert.Throws() syntax in the style of nUnit/xUnit.

You can download the package from Nuget using: PM> Install-Package MSTestExtensions

Or you can see the full source code here: https://github.com/bbraithwaite/MSTestExtensions

High level instructions, download the assembly and inherit from BaseTest and you can use the Assert.Throws() syntax.

The main method for the Throws implementation looks as follows:

public static void Throws(Action task, string expectedMessage, ExceptionMessageCompareOptions options) where T : Exception
{
    try
    {
        task();
    }
    catch (Exception ex)
    {
        AssertExceptionType(ex);
        AssertExceptionMessage(ex, expectedMessage, options);
        return;
    }

    if (typeof(T).Equals(new Exception().GetType()))
    {
        Assert.Fail("Expected exception but no exception was thrown.");
    }
    else
    {
        Assert.Fail(string.Format("Expected exception of type {0} but no exception was thrown.", typeof(T)));
    }
}

More info here.