public void TestCreateChildrenShouldCreateNullLeafIfColumnHasNulls()
        {
            var column  = new ColumnBuilder().WithNulls().Build();
            var node    = new BooleanFilterTreeRoot("Test", column);
            var results = node.CreateChildren().ToList();

            Assert.That(results[0].Name, Is.EqualTo("Null"));
        }
 public void SetUp()
 {
     _column = new ColumnBuilder().Build();
     _node   = new BooleanFilterTreeRoot("Test", _column);
 }