RangedObservableCollection <T> ct <T>(IEnumerable <T> ts)
{
var a = new RangedObservableCollection <T>();
a.AddRange(ts);
return(a);
}
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 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 ToDoListPageViewModel(INavigationService navigationService,
RealmService realmService
)
: base(navigationService)
{
Title = AppResources.ViewATitle;
RealmService = realmService;
Tasks = new RangedObservableCollection <ToDoListItemViewModel>();
AddCommand = new DelegateCommand(AddTask);
}
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);
}
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());
}
private void Load()
{
if (records == null)
{
records = TmpData.PasswordKeeper.Records;
}
CharacterGroupings groupings = new CharacterGroupings();
observablerecords = new RangedObservableCollection <PasswordRecordViewModelGroup>(records.Select(a => PasswordRecordViewModel.CreateFromRecord(a))
.OrderBy(a => a.DisplayName).GroupBy((a) => groupings.Lookup(a.DisplayName))
.Select(a => new PasswordRecordViewModelGroup(a.Key, ct(a))));
UpdateForVisualState(AdaptiveStates.CurrentState);
// Don't play a content transition for first item load.
// Sometimes, this content will be animated as part of the page transition.
DisableContentTransitions();
}
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);
}
