BaseTestBehaviorObserver.cs

public class BaseTestBehaviorObserver
{
    public void Subscribe(IExecutionProvider provider)
    {
        provider.TestInstantiatedEvent += this.TestInstantiated;
        provider.PreTestInitEvent += this.PreTestInit;
        provider.PostTestInitEvent += this.PostTestInit;
        provider.PreTestCleanupEvent += this.PreTestCleanup;
        provider.PostTestCleanupEvent += this.PostTestCleanup;
    }

    public void Unsubscribe(IExecutionProvider provider)
    {
        provider.TestInstantiatedEvent -= this.TestInstantiated;
        provider.PreTestInitEvent -= this.PreTestInit;
        provider.PostTestInitEvent -= this.PostTestInit;
        provider.PreTestCleanupEvent -= this.PreTestCleanup;
        provider.PostTestCleanupEvent -= this.PostTestCleanup;
    }

    protected virtual void TestInstantiated(object sender, TestExecutionEventArgs e)
    {
    }

    protected virtual void PreTestInit(object sender, TestExecutionEventArgs e)
    {
    }

    protected virtual void PostTestInit(object sender, TestExecutionEventArgs e)
    {
    }

    protected virtual void PreTestCleanup(object sender, TestExecutionEventArgs e)
    {
    }

    protected virtual void PostTestCleanup(object sender, TestExecutionEventArgs e)
    {
    }
}