mysql5/mysql-5.7.27/unittest/gunit/opt_recperkey-t.cc

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4.3 KiB
C++

/*
Copyright (c) 2014, 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,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
// First include (the generated) my_config.h, to get correct platform defines.
#include "my_config.h"
#include <gtest/gtest.h>
#include "fake_key.h" // Fake_KEY
#include "key.h" // KEY
namespace recperkey_unittest {
/**
Test the API for setting and getting records per key values.
*/
TEST(RecPerKeyTest, RecPerKeyAPI)
{
const uint key_parts= 3;
Fake_KEY key(key_parts, false);
/*
Test that the rec_per_key values are default/unknown.
*/
for (uint kp=0; kp < key_parts; kp++)
{
EXPECT_FALSE(key.has_records_per_key(kp));
EXPECT_EQ(key.records_per_key(kp), REC_PER_KEY_UNKNOWN);
}
/*
Test setting the values using the API
*/
// Give one of the key parts a value
key.set_records_per_key(1, 2.0);
// Validate that only one of the key parts has gotten a value
EXPECT_FALSE(key.has_records_per_key(0));
EXPECT_TRUE(key.has_records_per_key(1));
EXPECT_FALSE(key.has_records_per_key(2));
EXPECT_EQ(key.records_per_key(0), REC_PER_KEY_UNKNOWN);
EXPECT_EQ(key.records_per_key(1), 2.0);
EXPECT_EQ(key.records_per_key(2), REC_PER_KEY_UNKNOWN);
// Reset the rec_per_key value to default/unkown
key.set_records_per_key(1, REC_PER_KEY_UNKNOWN);
EXPECT_FALSE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), REC_PER_KEY_UNKNOWN);
}
/**
Test the old integer based rec_per_key implementation used
together with the records per key API.
*/
TEST(RecPerKeyTest, RecPerKey)
{
const uint key_parts= 3;
Fake_KEY key(key_parts, false);
// Set values directly in the integer based rec_per_key array
key.rec_per_key[0]= 0; // default/unknown value
key.rec_per_key[1]= 1;
key.rec_per_key[2]= 2;
// Validate that this produces correct values using the API functions
EXPECT_FALSE(key.has_records_per_key(0));
EXPECT_EQ(key.records_per_key(0), REC_PER_KEY_UNKNOWN);
EXPECT_TRUE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), 1.0);
EXPECT_TRUE(key.has_records_per_key(2));
EXPECT_EQ(key.records_per_key(2), 2.0);
// Reset the values
key.rec_per_key[1]= 0;
key.rec_per_key[2]= 0;
EXPECT_FALSE(key.has_records_per_key(0));
EXPECT_EQ(key.records_per_key(0), REC_PER_KEY_UNKNOWN);
EXPECT_FALSE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), REC_PER_KEY_UNKNOWN);
EXPECT_FALSE(key.has_records_per_key(2));
EXPECT_EQ(key.records_per_key(2), REC_PER_KEY_UNKNOWN);
/*
Test that if both integer and float rec_per_key values are set,
the float values will be used.
*/
// Give a value using the integer based rec_per_key
key.rec_per_key[1]= 1;
EXPECT_TRUE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), 1.0);
// Update the value using the API
key.set_records_per_key(1, 2.0);
EXPECT_TRUE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), 2.0);
// Set the value back to default/unknown
key.set_records_per_key(1, REC_PER_KEY_UNKNOWN);
/*
This result might not be intuitive but when we set the value using
the API, only the float value will be updated. When the float value
is set to default/unknown, the integer value will be used instead.
In pratice this is not an issue, but can be solved by setting
the integer value to 0, when setting the float value.
*/
EXPECT_TRUE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), 1.0);
/*
Verify that we get default/unknown when also setting the integer
value to the default/unknown value.
*/
key.rec_per_key[1]= 0;
EXPECT_FALSE(key.has_records_per_key(1));
EXPECT_EQ(key.records_per_key(1), REC_PER_KEY_UNKNOWN);
}
}