63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
/* Copyright (c) 2014, 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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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 "test_utils.h"
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#include "fake_costmodel.h"
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#include "sql_class.h"
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#include "uniques.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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{
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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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{
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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= alloc_root(thd()->mem_root,
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unique_calc_buff_size * sizeof(uint));
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Bounds_checked_array<uint> cost_buff=
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Bounds_checked_array<uint>(static_cast<uint*>(rawmem), unique_calc_buff_size);
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const double dup_removal_cost=
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Unique::get_use_cost(cost_buff, num_keys, key_size, MIN_SORT_MEMORY,
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&cost_model_table);
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EXPECT_GT(dup_removal_cost, 0.0);
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}
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}
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