public void TestIDataViewSchemaInvalidate()
{
DataFrame df = MakeDataFrameWithAllMutableColumnTypes(10, withNulls: false);
IDataView dataView = df;
DataViewSchema schema = dataView.Schema;
Assert.Equal(14, schema.Count);
df.RemoveColumn("Bool");
schema = dataView.Schema;
Assert.Equal(13, schema.Count);
BaseColumn boolColumn = new PrimitiveColumn <bool>("Bool", Enumerable.Range(0, (int)df.RowCount).Select(x => x % 2 == 1));
df.InsertColumn(0, boolColumn);
schema = dataView.Schema;
Assert.Equal(14, schema.Count);
Assert.Equal("Bool", schema[0].Name);
BaseColumn boolClone = boolColumn.Clone();
boolClone.SetName("BoolClone");
df.SetColumn(1, boolClone);
schema = dataView.Schema;
Assert.Equal("BoolClone", schema[1].Name);
}
