public void EnqueueAll_Should_Fire_NotifyCollectionChanged_Add_Event_With_Input_Of_Count_One(int number, int expectedIndex)
{
// Arrange
IObservablePriorityQueue <int> queue = CreateObservableInstance <int>();
queue.EnqueueAll(new List <int>()
{
1, 3, 5
});
NotifyCollectionChangedEventArgs args = null;
queue.CollectionChanged += (sender, e) =>
{
args = e;
};
// Act
queue.EnqueueAll(new List <Int32>()
{
number
});
// Assert
Assert.NotNull(args);
Assert.Equal(args.Action, NotifyCollectionChangedAction.Add);
Assert.Equal(args.NewStartingIndex, expectedIndex);
Assert.Equal(args.NewItems.Count, 1);
Assert.Equal(args.NewItems[0], number);
}
public void Dequeue_Should_Fire_NotifyCollectionChanged_Remove_Event()
{
// Arrange
IObservablePriorityQueue <int> queue = CreateObservableInstance <int>();
queue.EnqueueAll(new List <int>()
{
1, 2, 3
});
NotifyCollectionChangedEventArgs args = null;
queue.CollectionChanged += (sender, e) =>
{
args = e;
};
// Act
queue.Dequeue();
// Assert
Assert.NotNull(args);
Assert.Equal(args.Action, NotifyCollectionChangedAction.Remove);
Assert.Equal(args.OldStartingIndex, 0);
Assert.Equal(args.OldItems[0], 1);
}
public void EnqueueAll_Should_Not_Fire_NotifyCollectionChanged_Event_With_Empty_Input()
{
// Arrange
IObservablePriorityQueue <int> queue = CreateObservableInstance <int>();
NotifyCollectionChangedEventArgs args = null;
queue.CollectionChanged += (sender, e) =>
{
args = e;
};
// Act
queue.EnqueueAll(new List <Int32>());
// Assert
Assert.Null(args);
}
public void EnqueueAll_Should_Fire_NotifyCollectionChanged_Reset_Event_With_Input_Of_Count_Greater_Than_One()
{
// Arrange
IObservablePriorityQueue <int> queue = CreateObservableInstance <int>();
NotifyCollectionChangedEventArgs args = null;
queue.CollectionChanged += (sender, e) =>
{
args = e;
};
// Act
queue.EnqueueAll(new List <Int32>()
{
1, 2
});
// Assert
Assert.NotNull(args);
Assert.Equal(args.Action, NotifyCollectionChangedAction.Reset);
}
