### Question:
DBSetExpr extends DBExpr { @Override public void addReferencedColumns(Set<DBColumn> list) { list.add(column); } DBSetExpr(DBColumn expr, Object value); @Override DBDatabase getDatabase(); DBRowSet getTable(); DBColumn getColumn(); Object getValue(); void setValue(Object value); @Override void addReferencedColumns(Set<DBColumn> list); @Override void addSQL(StringBuilder buf, long context); final DBColumn column; public Object value; }### Answer:
@Test public void testAddReferencedColumns() { Set<DBColumn> cols = new HashSet<DBColumn>(); expr.addReferencedColumns(cols); assertTrue(cols.contains(testDB.EMPLOYEE.FIRSTNAME)); }