Ability to listen for TestResult events

[Badgerati]

When the tests are started via EdisonContext -> Run, you have to wait till after the tests have all finished running or have a separate thread polling the EdisonContext's ResultQueue for chances.

It would be nicer if you could attach a listener to the EdisonContext that would be called on TestResult events after each test, for external updating.

Any other kind of events would be useful also.

[Badgerati]

The EdisonContext now has an OnTestResult event handler. Attaching an event listener to this will cause ping backs when a test has finished running.

The event listener will have only the TestResult object passed to it, i.e.:

public void Main()
{
    var context = new EdisonContext();
    context.OnTestResult += EdisonContext_OnTestResult;
}

private void EdisonContext_OnTestResult(TestResult result)
{
    // do stuff here
}

An example can be seen within the Edison.GUI Form logic where the handler is used for test counts, and populating the Fail Tests list box tab.