@Test
public void testHasColumn() {

    ColumnStore<Node> store = new ColumnStore(Node.class, false);
    ColumnImpl col = new ColumnImpl("0", Integer.class, null, null, Origin.DATA, false, false);
    store.addColumn(col);
    Assert.assertTrue(store.hasColumn(col.getId()));
    Assert.assertFalse(store.hasColumn(""));
    Assert.assertFalse(store.hasColumn("A"));
}