/* Copyright (c) 2012, 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 Street, Fifth Floor, Boston, MA 02110-1301, USA */

// First include (the generated) my_config.h, to get correct platform defines.
#include "my_config.h"
#include <gtest/gtest.h>

#include "field_temporal_utils.h"
#include "test_utils.h"
#include "fake_table.h"

#include "field.h"

namespace field_datetime_unittests {

using my_testing::Server_initializer;
using my_testing::Mock_error_handler;

class FieldDatetimeTest : public ::testing::Test
{
protected:
  virtual void SetUp() { initializer.SetUp(); }
  virtual void TearDown() { initializer.TearDown(); }

  THD *thd() { return initializer.thd(); }

  Server_initializer initializer;

  Field_set *create_field_set(TYPELIB *tl);
};


class Mock_field_datetime : public Field_datetime
{
private:
  uchar buffer[PACK_LENGTH];
  uchar null_byte;

  void initialize()
  {
    ptr= buffer;
    memset(buffer, 0, PACK_LENGTH);
    null_byte= '\0';
    set_null_ptr(&null_byte, 1);
  }

public:

  Mock_field_datetime()
    : Field_datetime(0,                         // ptr_arg
                     NULL,                      // null_ptr_arg
                     1,                         // null_bit_arg
                     Field::NONE,               // unireg_check_arg
                     "field_name")              // field_name_arg
  {
    initialize();
  }

  void make_writable() { bitmap_set_bit(table->write_set, field_index); }
  void make_readable() { bitmap_set_bit(table->read_set, field_index); }
};


TEST_F(FieldDatetimeTest, StoreLegalStringValues)
{
  char buff[MAX_FIELD_WIDTH];
  String str(buff, sizeof(buff), &my_charset_bin);
  String unused;

  Mock_field_datetime field_dt;
  Fake_TABLE table(&field_dt);
  table.in_use= thd();
  field_dt.make_writable();
  field_dt.make_readable();
  thd()->count_cuted_fields= CHECK_FIELD_WARN;

  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("2001-01-01 00:00:01"),
                      "2001-01-01 00:00:01", 0, TYPE_OK);
  }
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("0000-00-00 00:00:00"),
                      "0000-00-00 00:00:00", 0, TYPE_OK);
  }
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("0001-00-00 00:00:00"),
                      "0001-00-00 00:00:00", 0, TYPE_OK);
  }
}


TEST_F(FieldDatetimeTest, StoreIllegalStringValues)
{
  Mock_field_datetime field_dt;
  Fake_TABLE table(&field_dt);
  table.in_use= thd();
  field_dt.make_writable();
  field_dt.make_readable();
  thd()->count_cuted_fields= CHECK_FIELD_WARN;

  // Bad year
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("99999-01-01 00:00:01"),
                      "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }

  // Bad month
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("2001-13-01 00:00:01"),
                      "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }

  // Bad day
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("2001-01-32 00:00:01"),
                      "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }

  // Bad hour
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("2001-01-01 72:00:01"),
                      "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }

  // Bad minute
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("2001-01-01 00:72:01"),
                      "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }

  // Bad second
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("2001-01-01 00:00:72"),
                      "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }

  // Not a day
  {
    SCOPED_TRACE("");
    test_store_string(&field_dt, STRING_WITH_LEN("foo"), "0000-00-00 00:00:00",
                      WARN_DATA_TRUNCATED, TYPE_ERR_BAD_VALUE);
  }
}


// Store zero date using different combinations of SQL modes
static const int no_modes= 3;
static const sql_mode_t strict_modes[no_modes]=
 {
   MODE_STRICT_TRANS_TABLES,
   MODE_STRICT_ALL_TABLES,
   MODE_STRICT_TRANS_TABLES | MODE_STRICT_ALL_TABLES
 };


/**
  Strictness mode test 1:

  Try storing dates with zeroes when no zero-restrictions apply
  (neither NO_ZERO_DATE or NO_ZERO_IN_DATE are set). There should be
  no errors, warnings or notes.
*/
TEST_F(FieldDatetimeTest, StoreZeroDateSqlModeNoZeroRestrictions)
{
  Mock_field_datetime field_dt;
  Fake_TABLE table(&field_dt);
  table.in_use= thd();
  field_dt.make_writable();
  field_dt.make_readable();
  thd()->count_cuted_fields= CHECK_FIELD_WARN;

  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("0000-00-00 00:00:00"),
                           "0000-00-00 00:00:00",
                           TYPE_OK, strict_modes[i], 0);
  }

  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("0000-01-01 00:00:00"),
                           "0000-01-01 00:00:00",
                           TYPE_OK, strict_modes[i], 0);
  }

  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("2001-00-01 00:00:00"),
                           "2001-00-01 00:00:00",
                           TYPE_OK, strict_modes[i], 0);
  }

  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("2001-01-00 00:00:00"),
                           "2001-01-00 00:00:00",
                           TYPE_OK, strict_modes[i], 0);
  }
}


static const type_conversion_status nozero_expected_status[]=
  {
    TYPE_ERR_BAD_VALUE,
    TYPE_ERR_BAD_VALUE,
    TYPE_ERR_BAD_VALUE
  };

/**
  Strictness mode test 2:

  Try storing dates with zeroes when NO_ZERO_DATE flag is set. There
  should be no errors, warnings or notes unless the entire date is
  zero: "0000-00-00"
*/
TEST_F(FieldDatetimeTest, StoreZeroDateSqlModeNoZeroDate)
{
  Mock_field_datetime field_dt;
  Fake_TABLE table(&field_dt);
  table.in_use= thd();
  field_dt.make_writable();
  field_dt.make_readable();
  thd()->count_cuted_fields= CHECK_FIELD_WARN;

  // With "MODE_NO_ZERO_DATE" set - Errors if date is all null
  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("0000-00-00 00:00:00"),
                           "0000-00-00 00:00:00",
                           nozero_expected_status[i],
                           MODE_NO_ZERO_DATE | strict_modes[i],
                           ER_TRUNCATED_WRONG_VALUE);
  }

  // Zero year, month or day is fine
  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("0000-01-01 00:00:00"),
                           "0000-01-01 00:00:00",
                           TYPE_OK,
                           MODE_NO_ZERO_DATE | strict_modes[i],
                           0);
  }

  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("2001-00-01 00:00:00"),
                           "2001-00-01 00:00:00",
                           TYPE_OK,
                           MODE_NO_ZERO_DATE | strict_modes[i],
                           0);
  }

  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("2001-01-00 00:00:00"),
                           "2001-01-00 00:00:00",
                           TYPE_OK,
                           MODE_NO_ZERO_DATE | strict_modes[i],
                           0);
  }
}

/**
  Strictness mode test 3:

  Try storing dates with zeroes when NO_ZERO_IN_DATE flag is set. There
  should be no errors unless either month or day is zero.
*/
TEST_F(FieldDatetimeTest, StoreZeroDateSqlModeNoZeroInDate)
{
  Mock_field_datetime field_dt;
  Fake_TABLE table(&field_dt);
  table.in_use= thd();
  field_dt.make_writable();
  field_dt.make_readable();
  thd()->count_cuted_fields= CHECK_FIELD_WARN;

  // With "MODE_NO_ZERO_IN_DATE" set - Entire date zero is ok
  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("0000-00-00 00:00:00"),
                           "0000-00-00 00:00:00",
                           TYPE_OK,
                           MODE_NO_ZERO_IN_DATE | strict_modes[i],
                           0);
  }

  // Year 0 is valid in strict mode too
  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("0000-01-01 00:00:00"),
                           "0000-01-01 00:00:00",
                           TYPE_OK,
                           MODE_NO_ZERO_IN_DATE | strict_modes[i],
                           0);
  }

  // Month 0 is NOT valid in strict mode, stores all-zero date
  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("2001-00-01 00:00:00"),
                           "0000-00-00 00:00:00",
                           nozero_expected_status[i],
                           MODE_NO_ZERO_IN_DATE | strict_modes[i],
                           ER_TRUNCATED_WRONG_VALUE);
  }

  // Day 0 is NOT valid in strict mode, stores all-zero date
  for (int i= 0; i < no_modes; i++)
  {
    SCOPED_TRACE("");
    store_zero_in_sql_mode(&field_dt,
                           STRING_WITH_LEN("2001-01-00 00:00:00"),
                           "0000-00-00 00:00:00",
                           nozero_expected_status[i],
                           MODE_NO_ZERO_IN_DATE | strict_modes[i],
                           ER_TRUNCATED_WRONG_VALUE);
  }
}


}