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68 lines
2.5 KiB
68 lines
2.5 KiB
5 months ago
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/* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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// First include (the generated) my_config.h, to get correct platform defines.
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#include "my_config.h"
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#include <gtest/gtest.h>
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#include <stddef.h>
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#include <sys/types.h>
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#include "sql/sql_class.h"
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#include "sql/uniques.h"
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#include "unittest/gunit/fake_costmodel.h"
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#include "unittest/gunit/test_utils.h"
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namespace unique_unittest {
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using my_testing::Server_initializer;
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class UniqueCostTest : public ::testing::Test {
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protected:
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virtual void SetUp() { initializer.SetUp(); }
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virtual void TearDown() { initializer.TearDown(); }
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THD *thd() { return initializer.thd(); }
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Server_initializer initializer;
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};
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// This is an excerpt of code from get_best_disjunct_quick()
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TEST_F(UniqueCostTest, GetUseCost) {
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const ulong num_keys = 328238;
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const ulong key_size = 96;
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// Set up the optimizer cost model
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Fake_Cost_model_table cost_model_table;
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size_t unique_calc_buff_size =
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Unique::get_cost_calc_buff_size(num_keys, key_size, MIN_SORT_MEMORY);
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void *rawmem = thd()->mem_root->Alloc(unique_calc_buff_size * sizeof(uint));
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Bounds_checked_array<uint> cost_buff = Bounds_checked_array<uint>(
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static_cast<uint *>(rawmem), unique_calc_buff_size);
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const double dup_removal_cost = Unique::get_use_cost(
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cost_buff, num_keys, key_size, MIN_SORT_MEMORY, &cost_model_table);
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EXPECT_GT(dup_removal_cost, 0.0);
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}
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} // namespace unique_unittest
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