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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Authors:
// Brian O'Keefe (zer0keefie@gmail.com)
//
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.ComponentModel;
using MonoTests.System.Collections.Specialized;
using NUnit.Framework;
namespace MonoTests.System.Collections.ObjectModel {
[TestFixture]
public class ReadOnlyObservableCollectionTest {
[Test]
public void ClassTest()
{
// Because the collection cannot change, check to make sure exceptions are thrown for modifications.
List<char> initial = new List<char> ();
initial.Add ('A');
initial.Add ('B');
initial.Add ('C');
ObservableCollection<char> collection = new ObservableCollection<char> (initial);
ReadOnlyObservableCollection<char> readOnlyCollection = new ReadOnlyObservableCollection<char> (collection);
// Test the events
PropertyChangedEventHandler pceh = delegate (object sender, PropertyChangedEventArgs e) {
Assert.Fail ("No properties should change.");
};
NotifyCollectionChangedEventHandler ncceh = delegate (object sender, NotifyCollectionChangedEventArgs e) {
Assert.Fail ("The collection should not change.");
};
((INotifyPropertyChanged)readOnlyCollection).PropertyChanged += pceh;
((INotifyCollectionChanged)readOnlyCollection).CollectionChanged += ncceh;
// Done with the events.
((INotifyPropertyChanged)readOnlyCollection).PropertyChanged -= pceh;
((INotifyCollectionChanged)readOnlyCollection).CollectionChanged -= ncceh;
Assert.AreEqual (3, readOnlyCollection.Count, "RO_1");
CollectionChangedEventValidators.AssertEquivalentLists (initial, readOnlyCollection, "RO_2");
// Modifying the underlying collection
bool propChanged = false;
pceh = delegate (object sender, PropertyChangedEventArgs e) {
propChanged = true;
};
ncceh = delegate (object sender, NotifyCollectionChangedEventArgs e) {
CollectionChangedEventValidators.ValidateAddOperation (e, new char [] { 'I' }, 3, "RO_3");
};
((INotifyPropertyChanged)readOnlyCollection).PropertyChanged += pceh;
((INotifyCollectionChanged)readOnlyCollection).CollectionChanged += ncceh;
// In theory, this will cause the properties to change.
collection.Add ('I');
Assert.IsTrue (propChanged, "RO_4");
}
}
}
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