Unit/Integration Testing code that uses HttpCurrentContext

Question

Trying to get Nunit working in ASP.Net.

The problem is, I'm testing a custom control - which references a Global Resource.

When I try to unit test it

/// </summary>
        [Test]
        public void TestSetAndGetNumber()
        {
            PhoneNumber phone = new PhoneNumber(PhoneNumber.NumberType.Business, "", true, "");
            string expectedString = "1-800-Goat-Phone";
            string resultString = "1-800-Goat-Phone";
            resultString = phone.Value = resultString;
            Assert.AreEqual(expectedString, resultString, "GetNumberMatch method returned unexpected result.");
            Assert.Fail("Create or modify test(s).");
        }

I will get "cannot load App_GlobalResources".

Trying to figure out if maybe I should attempt to simulate HttpContext Using You've been Haacked blog post but nobody has verified this is do-able.

Answer 1

This may sound glib, but can't you just redesign the PhoneNumber class so that it is testable?

If you want to use unit testing, this would seem to be the way to go. If you can't modify the PhoneNumber class, what's the point in testing it?

Answer 2

This is a typical scenario that you should set up your class in a right way to be testable. If you have external dependency (references to a Global Resource), then you should make it an abstract, so you can mock it.

I suggest you take a look at this book, and it explains how to design your class be more testable. Alternative, you can download examples from moq. Set up unit testing is a lot about designing your class in more loose coupled way, so you can effectively test it without interaction with DB/File system/other resource.