@Test
 public void testRemoveAllTablesExcept() throws Exception {

     Database database = new Database();
     
     database.addTable(new Table("SYM_DATA"));
     database.addTable(new Table("SYM_DOO_DADS"));
     
     assertEquals(2, database.getTableCount());
     
     database.removeAllTablesExcept("SYM_DATA");
     
     assertEquals(1, database.getTableCount());
     assertNotNull(database.findTable("SYM_DATA"));
}