public void ReplaceCollection_Updates()
{
var ctx = new TestContext();
var items = new ObservableCollection <int>(Enumerable.Range(0, 10));
var watcher = new CollectionChangedWatcher();
var comp = ctx.RenderComponent <Repeater <int> >(builder => builder
.Add(p => p.Items, items)
.Add(p => p.ChildContent, x => x.ToString())
.Add(p => p.CollectionChanged, callbackFactory.Create(watcher, (Action <NotifyCollectionChangedEventArgs>)watcher.OnCollectionChanged))
);
Assert.Equal(string.Concat(items.Select(x => x.ToString())), comp.Markup);
Assert.Equal(1, watcher.Count);
comp.SetParametersAndRender(builder => builder.Add(p => p.Items, items));
Assert.Equal(string.Concat(items.Select(x => x.ToString())), comp.Markup);
Assert.Equal(1, watcher.Count);
var updated = Enumerable.Range(10, 20).ToList();
comp.SetParametersAndRender(builder => builder.Add(p => p.Items, updated));
Assert.Equal(string.Concat(updated.Select(x => x.ToString())), comp.Markup);
Assert.Equal(2, watcher.Count);
}
public void CollectionChanged_Updates()
{
var ctx = new TestContext();
var items = new ObservableCollection <int>(Enumerable.Range(0, 10));
var watcher = new CollectionChangedWatcher();
var comp = ctx.RenderComponent <Repeater <int> >(builder => builder
.Add(p => p.Items, items)
.Add(p => p.ChildContent, x => x.ToString())
.Add(p => p.CollectionChanged, callbackFactory.Create(watcher, (Action <NotifyCollectionChangedEventArgs>)watcher.OnCollectionChanged))
);
Assert.Equal(string.Concat(items.Select(x => x.ToString())), comp.Markup);
Assert.Equal(1, watcher.Count);
items.Add(10);
Assert.Equal(string.Concat(items.Select(x => x.ToString())), comp.Markup);
Assert.Equal(2, watcher.Count);
items.Clear();
Assert.True(string.IsNullOrWhiteSpace(comp.Markup));
Assert.Equal(3, watcher.Count);
}