QueryParser parser = new QueryParser(tokens);
QueryParser.query_return result = parser.query();
Tree ast = (Tree)result.getTree();
System.out.println( ast.toStringTree() );
TreePrinter.printTree( (CommonTree)ast, 0 );
Assert.assertEquals( 0, lexer.getNumberOfSyntaxErrors() );
Assert.assertEquals( 0, parser.getNumberOfSyntaxErrors() );
Assert.assertEquals( "QUERY", ast.getText() );