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