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[Charlie Poole <charlie@xxxxxxxxx>]

** Changed in: nunit-3.0
       Status: Triaged => In Progress

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https://bugs.launchpad.net/bugs/890129

Title:
  DelayedConstraint doesn't appear to poll properties of objects

Status in NUnit Test Framework:
  In Progress
Status in NUnit V2 Test Framework:
  Fix Released

Bug description:
  Using 2.5.10.11092.

  I've just been exploring the new (to me) fluent/constraints syntax, specifically the After() constraint and am very impressed.
  I've already learnt not to pass by value (!), however, I thought that a pass-by-reference should be ok.

  For example:
           var worker = new BackgroundWorker();
           var list = new List<int>();
           worker.RunWorkerCompleted += delegate { list.Add(1); };
           worker.DoWork += delegate { Thread.Sleep(1); };
           worker.RunWorkerAsync();
           Assert.That(list, Has.Count.EqualTo(1).After(5000, 100));

  The documentation states that its "intended use is with delegates and references", so I'd expect the 'list' object reference to be polled, and after about 1 second, for the constraint to pass.
  However, I have to wait for the full 5 seconds before the test succeeds.

  The obvious work around is to convert the 'list' object to a delegate:
           Assert.That(() => list, Has.Count.EqualTo(1).After(5000, 100));

  This works fine, and still look ok (to me).

  However, I wondered if this is deliberate or unavoidable behaviour or
  just a bug...

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