public void Contains_ItemsAdded_MatchesExpectation()
{
var item1 = new SqlBulkCopyColumnMapping(0, 0);
var item2 = new SqlBulkCopyColumnMapping(1, 1);
var item3 = new SqlBulkCopyColumnMapping(2, 2);
SqlBulkCopyColumnMappingCollection collection = CreateCollection(item1, item2, item3);
Assert.True(collection.Contains(item1));
Assert.True(collection.Contains(item2));
Assert.True(collection.Contains(item3));
Assert.False(collection.Contains(null));
IList list = collection;
Assert.True(list.Contains(item1));
Assert.True(list.Contains(item2));
Assert.True(list.Contains(item3));
Assert.False(list.Contains(null));
Assert.False(list.Contains("Bogus"));
}