public void Insert_Duplicate()
{
StubInnerData(_order1);
CheckThrows <ArgumentException> (
() => _modificationCheckingDecorator.Insert(0, _order1),
"The collection already contains an object with ID 'Order|5682f032-2f0b-494b-a31c-c97f02b89c36|System.Guid'.\r\nParameter name: domainObject");
_wrappedDataMock.AssertWasNotCalled(mock => mock.Insert(Arg <int> .Is.Anything, Arg <DomainObject> .Is.Anything));
}