public void Test_VstEventCollection_CollectionChanged_RemoveAt()
{
var target = new VstEventCollection
{
new VstMidiEvent(0, 100, 0, new byte[] { 100, 110, 120 }, 0, 0),
new VstMidiEvent(0, 100, 0, new byte[] { 100, 110, 120 }, 0, 0)
};
target.Should().HaveCount(2);
int callCount = 0;
target.CollectionChanged += (sender, e) =>
{
e.Action.Should().Be(NotifyCollectionChangedAction.Remove);
e.OldItems.Should().NotBeNullOrEmpty();
e.OldItems[0].Should().NotBeNull();
callCount++;
};
target.RemoveAt(0);
target.RemoveAt(0);
callCount.Should().Be(2);
target.Should().BeEmpty();
}
public void Test_VstEventCollection_CollectionChanged_RemoveAt()
{
VstEventCollection target = new VstEventCollection();
target.Add(new VstMidiEvent(0, 100, 0, new byte[] { 100, 110, 120 }, 0, 0));
target.Add(new VstMidiEvent(0, 100, 0, new byte[] { 100, 110, 120 }, 0, 0));
Assert.AreEqual(2, target.Count, "Collection Count is not as expected.");
int callCount = 0;
target.CollectionChanged += (sender, e) =>
{
Assert.AreEqual(NotifyCollectionChangedAction.Remove, e.Action, "Unexpected collection changed action.");
Assert.IsNotNull(e.NewItems, "NewItems collection is null.");
Assert.AreEqual(0, e.NewItems.Count, "Not the expected number of items in the NewItems collection.");
Assert.IsNotNull(e.OldItems, "OldItems collection is null.");
Assert.AreEqual(1, e.OldItems.Count, "Not the expected number of items in the OldItems collection.");
Assert.IsNotNull(e.OldItems[0], "OldItems[0] is null.");
callCount++;
};
target.RemoveAt(0);
target.RemoveAt(0);
Assert.AreEqual(2, callCount, "Call count is not as expected.");
}