MsTest ClassInitialize and Inheritance

Question

I have a base class for my tests which is composed in the following way:

[TestClass]
public abstract class MyBaseTest
{
   protected static string myField =          


        

Answer 1

UPDATE: Added lock to avoid multi-threading issues...

We know that a new instance of the class is constructed for every [TestMethod] in the class as it gets run. The parameter-less constructor of the base class will be called each time this happens. Couldn't you simply create a static variable in the base class and test it when constructor runs?

This helps you to not forget to put the initialization code in the sub-class.

Not sure if there's any drawback to this approach...

Like so:

public class TestBase
{
    private static bool _isInitialized = false;
    private object _locker = new object();

    public TestBase()
    {
        lock (_locker) 
        {
          if (!_isInitialized)
          {
            TestClassInitialize();
            _isInitialized = true;
          }
        }
    }

    public void TestClassInitialize()
    {
        // Do one-time init stuff
    }
}
public class SalesOrderTotals_Test : TestBase
{
    [TestMethod]
    public void TotalsCalulateWhenThereIsNoSalesTax()
    {
    }
    [TestMethod]
    public void TotalsCalulateWhenThereIsSalesTax()
    {
    }
}