public void StateScopeEntranceTest()
{
var scope = new StateScope();
Assert.AreEqual(false, scope.IsWithin);
using (scope.Enter())
{
Assert.AreEqual(true, scope.IsWithin);
using (scope.Enter())
{
Assert.AreEqual(true, scope.IsWithin);
}
Assert.AreEqual(true, scope.IsWithin);
}
Assert.AreEqual(false, scope.IsWithin);
}
public void StateScopeEntranceTriggersCallback()
{
var eventsRaised = 0;
Action callback = () => eventsRaised++;
var scope = new StateScope(callback);
Assert.AreEqual(0, eventsRaised);
using (scope.Enter())
{
// Went from false to true - so it should have raised
Assert.AreEqual(1, eventsRaised);
using (scope.Enter())
{
// Already in - no raise
Assert.AreEqual(1, eventsRaised);
}
// Still in - no raise
Assert.AreEqual(1, eventsRaised);
}
// Left - raise
Assert.AreEqual(2, eventsRaised);
}