RangedObservableCollection <T> ct <T>(IEnumerable <T> ts)
{
var a = new RangedObservableCollection <T>();
a.AddRange(ts);
return(a);
}
public void AddRangeTest()
{
var source = new RangedObservableCollection <int>();
var target = source.ToReadOnlyReactiveCollection(x => $"{x}");
source.Add(1);
target.Is("1");
source.AddRange(new[] { 2, 3, 4 });
target.Is("1", "2", "3", "4");
}
public void AddRangeSmallItemsCaseTest()
{
var c = new RangedObservableCollection <Person>();
var filtered = c.ToFilteredReadOnlyObservableCollection(x => x.IsRemoved);
var people = Enumerable.Range(1, 6).Select(x => new Person
{
Name = $"tanaka {x}",
IsRemoved = x % 2 == 0,
});
c.AddRange(people);
filtered.Count.Is(3);
}
public void AddRangeRaisesCorrectCollectionChangedEvent()
{
var collection = new RangedObservableCollection <int>();
collection.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Add, e.Action);
Assert.Null(e.OldItems);
Assert.Equal(ItemsToAdd, e.NewItems);
};
collection.AddRange(ItemsToAdd);
Assert.Equal(ItemsToAdd, collection.ToArray());
}
public void AddRangeRaisesCollectionChangedOnce()
{
var collection = new RangedObservableCollection <int>();
var didTrigger = false;
collection.CollectionChanged += (s, e) =>
{
Assert.False(didTrigger);
didTrigger = true;
};
collection.AddRange(ItemsToAdd);
Assert.True(didTrigger);
}
public void RemoveRangeRaisesCorrectCollectionChangedEventForNonExistentRemoves()
{
var collection = new RangedObservableCollection <int>();
collection.AddRange(ItemsToAdd);
collection.CollectionChanged += (s, e) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
Assert.Equal(new[] { 1, 2, 3, 4, 5 }, e.OldItems);
Assert.Null(e.NewItems);
};
collection.RemoveRange(new[] { 1, 2, 3, 4, 5, 60, 70, 80, 90, 100 });
Assert.Equal(new[] { 6, 7, 8, 9, 0 }, collection.ToArray());
}
public void RemoveRangeDoesNotRaiseCollectionChangedForMismatchingItems()
{
var collection = new RangedObservableCollection <int>();
collection.AddRange(ItemsToAdd);
var didTrigger = false;
collection.CollectionChanged += (s, e) =>
{
Assert.False(didTrigger);
didTrigger = true;
};
collection.RemoveRange(AlternateItemsToAdd);
Assert.False(didTrigger);
}
