/*
   Copyright (c) 2013, 2015, 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
*/

/** Unit test case for the function explain_filename(). */
#include "my_config.h"
#include <gtest/gtest.h>

#include <mysqld_error.h>
#include <sql_class.h>
#include <sql_table.h>

namespace explain_filename_unittest {

const int BUFLEN= 1000;

char to[BUFLEN];
char from[BUFLEN];

class PartitionTest : public ::testing::Test
{
protected:
  virtual void SetUp()
  {
    // Save global settings.
    m_charset= system_charset_info;
    m_locale= my_default_lc_messages;

    system_charset_info    = &my_charset_utf8_bin;
    my_default_lc_messages = &my_locale_en_US;

    /* Populate the necessary error messages */
    MY_LOCALE_ERRMSGS *errmsgs= my_default_lc_messages->errmsgs;
    EXPECT_FALSE(errmsgs->replace_msg(ER_DATABASE_NAME,     "Database"));
    EXPECT_FALSE(errmsgs->replace_msg(ER_TABLE_NAME,        "Table"));
    EXPECT_FALSE(errmsgs->replace_msg(ER_PARTITION_NAME,    "Partition"));
    EXPECT_FALSE(errmsgs->replace_msg(ER_SUBPARTITION_NAME, "Subpartition"));
    EXPECT_FALSE(errmsgs->replace_msg(ER_TEMPORARY_NAME,    "Temporary"));
    EXPECT_FALSE(errmsgs->replace_msg(ER_RENAMED_NAME,      "Renamed"));
  }

  virtual void TearDown()
  {
    // Restore global settings.
    system_charset_info= m_charset;
    my_default_lc_messages= m_locale;
  }

private:
  CHARSET_INFO *m_charset;
  MY_LOCALE    *m_locale;
};

void test_1(const char *in, const char *exp, enum_explain_filename_mode mode)
{
  char out[BUFLEN];

  size_t len1 = explain_filename(0, in, out, BUFLEN, mode);

  /* expected output and actual output must be same */
  bool pass = (strcmp(exp, out) == 0);

  /* length returned by explain_filename is fine */
  bool length = (len1 == strlen(exp));

  EXPECT_EQ( (pass && length), true);
  if (pass && length)
  {
    // pass
  }
  else
  {
    ADD_FAILURE() << "input file name: '" << in << "' explain output: '"
                  << out << "'" << std::endl;
  }
}


TEST_F(PartitionTest, ExplainFilename)
{
  test_1("test/t1.ibd",
         "Database `test`, Table `t1.ibd`",
         EXPLAIN_ALL_VERBOSE);

  test_1("test/t1.ibd",
         "`test`.`t1.ibd`",
         EXPLAIN_PARTITIONS_VERBOSE);

  test_1("test/t1.ibd",
         "`test`.`t1.ibd`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t1#TMP#",
         "Database `test`, Table `t1#TMP#`",
         EXPLAIN_ALL_VERBOSE);

  test_1("test/#sql-2882.ibd",
         "Database `test`, Table `#sql-2882.ibd`",
         EXPLAIN_ALL_VERBOSE);

  test_1("test/t1#REN#",
         "Database `test`, Table `t1#REN#`",
         EXPLAIN_ALL_VERBOSE);

  test_1("test/t1@0023REN@0023",
         "Database `test`, Table `t1#REN#`",
         EXPLAIN_ALL_VERBOSE);

  test_1("test/t1#p#p1",
         "Database `test`, Table `t1`, Partition `p1`",
         EXPLAIN_ALL_VERBOSE);

  test_1("test/t1#P#p1",
         "`test`.`t1` /* Partition `p1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t1#P#p1@00231",
         "`test`.`t1` /* Partition `p1#1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t1#P#p1#SP#sp1",
         "`test`.`t1` /* Partition `p1`, Subpartition `sp1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t1#p1#SP#sp1",
         "`test`.`t1#p1#SP#sp1`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t1#p#p1@00232#SP#sp1@00231#REN#",
         "`test`.`t1` /* Renamed Partition `p1#2`, Subpartition `sp1#1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t1#p#p1#SP#sp1#TMP#",
         "`test`.`t1` /* Temporary Partition `p1`, Subpartition `sp1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/#sql-t1#P#p1#SP#sp1#TMP#",
         "`test`.`#sql-t1#P#p1#SP#sp1#TMP#` /* Temporary Partition `p1`, Subpartition `sp1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/#sql-t1#P#p1#SP#sp1",
         "`test`.`#sql-t1#P#p1#SP#sp1` /* Partition `p1`, Subpartition `sp1` */",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/#sqlx-33",
         "`test`.`#sqlx-33`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/#mysql50#t",
         "`test`.`#mysql50#t`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("#mysql50#t",
         "`#mysql50#t`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("@0023t",
         "`#t`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  test_1("test/t@0023",
         "`test`.`t#`",
         EXPLAIN_PARTITIONS_AS_COMMENT);

  /*
    If a character not allowed in my_charset_filename is encountered,
    then it will not be converted to system_charset_info!
  */
  test_1("test/t@0023#",
         "`test`.`t@0023#`",
         EXPLAIN_PARTITIONS_AS_COMMENT);
}

} // namespace explain_filename_unittest