public void RemoveRangeTest()
{
var source = new RangedObservableCollection <Person>(new[]
{
new Person {
Name = "tanaka1", IsRemoved = false
},
new Person {
Name = "tanaka2", IsRemoved = true
},
new Person {
Name = "tanaka3", IsRemoved = false
},
new Person {
Name = "tanaka4", IsRemoved = true
},
new Person {
Name = "tanaka5", IsRemoved = false
},
});
var filtered = source.ToFilteredReadOnlyObservableCollection(x => !x.IsRemoved);
var buffer = new List <NotifyCollectionChangedEventArgs>();
filtered.Is(source[0], source[2], source[4]);
source.RemoveRange(new[]
{
source[0], source[1], source[2],
});
filtered.Is(source.Last());
}
public void ReplaceRangeTest()
{
var c = new RangedObservableCollection <Person>();
var filtered = c.ToFilteredReadOnlyObservableCollection(x => x.IsRemoved);
var people = Enumerable.Range(1, 1000000).Select(x => new Person
{
Name = $"tanaka {x}",
IsRemoved = x % 2 == 0,
});
c.ReplaceRange(people);
filtered.Count.Is(500000);
}
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);
}
