/*
 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "delete_statement_builder.h"
#include "expr_generator.h"
#include "ngs_common/protocol_protobuf.h"

#include <gtest/gtest.h>

namespace xpl
{
namespace test
{

class Delete_statement_builder_test : public ::testing::Test
{
public:
  Delete_statement_builder_test()
  : args(*msg.mutable_args()),
    expr_gen(query, args, schema, true),
    builder(expr_gen)
  {}
  Delete_statement_builder::Delete msg;
  Expression_generator::Args &args;
  Query_string_builder query;
  std::string schema;
  Expression_generator expr_gen;
  Delete_statement_builder builder;
};


namespace
{
void operator<< (::google::protobuf::Message &msg, const std::string& txt)
{
  ASSERT_TRUE(::google::protobuf::TextFormat::ParseFromString(txt, &msg));
}
} // namespace



TEST_F(Delete_statement_builder_test, build_table)
{
  msg <<
      "collection {name: 'xtable' schema: 'xschema'}"
      "data_model: TABLE "
      "criteria {type: OPERATOR "
      "          operator {name: '>' "
      "                    param {type: IDENT identifier {name: 'delta'}}"
      "                    param {type: LITERAL literal"
      "                                             {type: V_DOUBLE"
      "                                                 v_double: 1.0}}}}"
      "order {expr {type: IDENT identifier {name: 'gamma'}}"
      "       direction: DESC} "
      "limit {row_count: 2}";
  ASSERT_NO_THROW(builder.build(msg));
  EXPECT_EQ(
      "DELETE FROM `xschema`.`xtable` "
      "WHERE (`delta` > 1) "
      "ORDER BY `gamma` DESC "
      "LIMIT 2", query.get());
}


TEST_F(Delete_statement_builder_test, build_document)
{
  msg <<
      "collection {name: 'xcoll' schema: 'xschema'}"
      "data_model: DOCUMENT "
      "criteria {type: OPERATOR "
      "          operator {name: '>' "
      "                    param {type: IDENT identifier {document_path {type: MEMBER "
      "                                                                  value: 'delta'}}}"
      "                    param {type: LITERAL literal "
      "                                          {type: V_DOUBLE"
      "                                              v_double: 1.0}}}}"
      "order {expr {type: IDENT identifier {document_path {type: MEMBER "
      "                                                     value: 'gamma'}}}"
      "       direction: DESC} "
      "limit {row_count: 2}";
  ASSERT_NO_THROW(builder.build(msg));
  EXPECT_EQ(
      "DELETE FROM `xschema`.`xcoll` "
      "WHERE (JSON_EXTRACT(doc,'$.delta') > 1) "
      "ORDER BY JSON_EXTRACT(doc,'$.gamma') DESC "
      "LIMIT 2", query.get());
}

} // namespace test
} // namespace xpl