public void Test_RemoveRangeRemoveTestMethod()
{
devDhMagic.MgcObservableCollection <int> collection = new devDhMagic.MgcObservableCollection <int>();
var toAdd = new[] { 3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2, 3 };
var toRemove = new[] { 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 0, 0 };
collection.MgcAddRange(toAdd);
collection.CollectionChanged += (s, e) =>
{
if (e.Action != System.Collections.Specialized.NotifyCollectionChangedAction.Remove)
{
Assert.Fail("RemoveRange didn't use Remove like requested.");
}
if (e.OldItems == null)
{
Assert.Fail("OldItems should not be null.");
}
var expected = new int[] { 1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 8, 9, 9 };
if (expected.Length != e.OldItems.Count)
{
Assert.Fail("Expected and actual OldItems don't match.");
}
for (var i = 0; i < expected.Length; i++)
{
if (expected[i] != (int)e.OldItems[i])
{
Assert.Fail("Expected and actual OldItems don't match.");
}
}
};
collection.MgcRemoveRange(toRemove, NotifyCollectionChangedAction.Remove);
}
public void Test_RemoveRange_should_NOT_mutate_source_when_source_data_is_present()
{
var sourceData = new List <int>(new[] { 1, 2, 3 });
devDhMagic.MgcObservableCollection <int> collection = new devDhMagic.MgcObservableCollection <int>(new[] { 1, 2, 3, 4, 5, 6 });
collection.MgcRemoveRange(sourceData, NotifyCollectionChangedAction.Remove);
Assert.IsTrue(sourceData.Count == 3, "source data was mutated");
}
public void Test_RemoveRange_should_NOT_mutate_collection_when_source_data_is_not_present()
{
var sourceData = new List <int>(new[] { 1, 2, 3 });
devDhMagic.MgcObservableCollection <int> collection = new devDhMagic.MgcObservableCollection <int>(new[] { 4, 5, 6, 7, 8, 9 });
collection.MgcRemoveRange(sourceData, NotifyCollectionChangedAction.Remove);
// the collection should not be modified if the source items are not found
Assert.IsTrue(collection.Count == 6, "collection was mutated");
}
public void Test_RemoveRangeEmpty()
{
devDhMagic.MgcObservableCollection <int> collection = new devDhMagic.MgcObservableCollection <int>();
var toAdd = new[] { 3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2, 3 };
var toRemove = new int[0];
collection.MgcAddRange(toAdd);
collection.CollectionChanged += (s, e) =>
{
Assert.Fail("The event is raised.");
};
collection.MgcRemoveRange(toRemove, NotifyCollectionChangedAction.Remove);
}
