public void MustCallExitSameNumberOfTimesAsEnter()
{
var busyState = new BusyState();
busyState.Enter();
busyState.Enter();
busyState.Enter();
busyState.Exit();
Assert.IsTrue(busyState.IsBusy);
busyState.Exit();
Assert.IsTrue(busyState.IsBusy);
busyState.Exit();
Assert.IsFalse(busyState.IsBusy);
}
public void ExitingSetsIsBusyToFalseAgain()
{
var busyState = new BusyState();
busyState.Enter();
busyState.Exit();
Assert.IsFalse(busyState.IsBusy);
}
public void CanUseUsingBlock()
{
var busyState = new BusyState();
using (busyState.Enter())
{
Assert.IsTrue(busyState.IsBusy);
}
Assert.IsFalse(busyState.IsBusy);
}
public void RaisesPropertyChangedOnIsBusyChanged()
{
var changes = new Queue<string>();
var busyState = new BusyState();
busyState.PropertyChanged += (x, e) => changes.Enqueue(e.PropertyName);
busyState.Enter();
Assert.AreEqual("IsBusy", changes.Dequeue());
busyState.Enter();
Assert.AreEqual(0, changes.Count);
busyState.Exit();
Assert.AreEqual(0, changes.Count);
busyState.Exit();
Assert.AreEqual("IsBusy", changes.Dequeue());
Assert.AreEqual(0, changes.Count);
}
public void DoesntGetItsKnickersInATwistWhenExitingTooManyTimes()
{
var busyState = new BusyState();
busyState.Exit();
busyState.Exit();
busyState.Exit();
Assert.IsFalse(busyState.IsBusy);
busyState.Enter();
Assert.IsTrue(busyState.IsBusy);
}
public void EnteringSetsIsBusyToTrue()
{
var busyState = new BusyState();
busyState.Enter();
Assert.IsTrue(busyState.IsBusy);
}