public void testGetTableColumns() throws Exception {
MutableTable table1 = new MutableTable("table1");
MutableColumn column1 = new MutableColumn("c1", ColumnType.BIGINT);
MutableColumn column2 = new MutableColumn("c2", ColumnType.BIGINT);
MutableColumn column3 = new MutableColumn("c3", ColumnType.BIGINT);
table1.addColumn(column1);
column1.setTable(table1);
table1.addColumn(column2);
column2.setTable(table1);
table1.addColumn(column3);
column3.setTable(table1);