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/**
* Copyright (C) 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kDefault
#include "mongo/platform/basic.h"
#include <boost/utility.hpp>
#include "mongo/unittest/unittest.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/decorable.h"
#include "mongo/util/decoration_container.h"
#include "mongo/util/decoration_registry.h"
#include "mongo/util/log.h"
namespace mongo {
namespace {
static int numConstructedAs;
static int numDestructedAs;
class A {
public:
A() : value(0) {
++numConstructedAs;
}
~A() {
++numDestructedAs;
}
int value;
};
class ThrowA {
public:
ThrowA() : value(0) {
uasserted(ErrorCodes::Unauthorized, "Throwing in a constructor");
}
int value;
};
TEST(DecorableTest, DecorableType) {
class MyDecorable : public Decorable<MyDecorable> {
};
const auto dd1 = MyDecorable::declareDecoration<A>();
const auto dd2 = MyDecorable::declareDecoration<A>();
const auto dd3 = MyDecorable::declareDecoration<int>();
numConstructedAs = 0;
numDestructedAs = 0;
{
MyDecorable decorable1;
ASSERT_EQ(2, numConstructedAs);
ASSERT_EQ(0, numDestructedAs);
MyDecorable decorable2;
ASSERT_EQ(4, numConstructedAs);
ASSERT_EQ(0, numDestructedAs);
ASSERT_EQ(0, dd1(decorable1).value);
ASSERT_EQ(0, dd2(decorable1).value);
ASSERT_EQ(0, dd1(decorable2).value);
ASSERT_EQ(0, dd2(decorable2).value);
ASSERT_EQ(0, dd3(decorable2));
dd1(decorable1).value = 1;
dd2(decorable1).value = 2;
dd1(decorable2).value = 3;
dd2(decorable2).value = 4;
dd3(decorable2) = 5;
ASSERT_EQ(1, dd1(decorable1).value);
ASSERT_EQ(2, dd2(decorable1).value);
ASSERT_EQ(3, dd1(decorable2).value);
ASSERT_EQ(4, dd2(decorable2).value);
ASSERT_EQ(5, dd3(decorable2));
}
ASSERT_EQ(4, numDestructedAs);
}
TEST(DecorableTest, SimpleDecoration) {
numConstructedAs = 0;
numDestructedAs = 0;
DecorationRegistry registry;
const auto dd1 = registry.declareDecoration<A>();
const auto dd2 = registry.declareDecoration<A>();
const auto dd3 = registry.declareDecoration<int>();
{
DecorationContainer decorable1(®istry);
ASSERT_EQ(2, numConstructedAs);
ASSERT_EQ(0, numDestructedAs);
DecorationContainer decorable2(®istry);
ASSERT_EQ(4, numConstructedAs);
ASSERT_EQ(0, numDestructedAs);
ASSERT_EQ(0, decorable1.getDecoration(dd1).value);
ASSERT_EQ(0, decorable1.getDecoration(dd2).value);
ASSERT_EQ(0, decorable2.getDecoration(dd1).value);
ASSERT_EQ(0, decorable2.getDecoration(dd2).value);
ASSERT_EQ(0, decorable2.getDecoration(dd3));
decorable1.getDecoration(dd1).value = 1;
decorable1.getDecoration(dd2).value = 2;
decorable2.getDecoration(dd1).value = 3;
decorable2.getDecoration(dd2).value = 4;
decorable2.getDecoration(dd3) = 5;
ASSERT_EQ(1, decorable1.getDecoration(dd1).value);
ASSERT_EQ(2, decorable1.getDecoration(dd2).value);
ASSERT_EQ(3, decorable2.getDecoration(dd1).value);
ASSERT_EQ(4, decorable2.getDecoration(dd2).value);
ASSERT_EQ(5, decorable2.getDecoration(dd3));
}
ASSERT_EQ(4, numDestructedAs);
}
TEST(DecorableTest, ThrowingConstructor) {
numConstructedAs = 0;
numDestructedAs = 0;
DecorationRegistry registry;
registry.declareDecoration<A>();
registry.declareDecoration<ThrowA>();
registry.declareDecoration<A>();
try {
DecorationContainer d(®istry);
}
catch (const UserException& ex) {
ASSERT_EQ(ErrorCodes::Unauthorized, ex.getCode());
}
ASSERT_EQ(1, numConstructedAs);
ASSERT_EQ(1, numDestructedAs);
}
TEST(DecorableTest, Alignment) {
DecorationRegistry registry;
const auto firstChar = registry.declareDecoration<char>();
const auto firstInt = registry.declareDecoration<int>();
const auto secondChar = registry.declareDecoration<int>();
const auto secondInt = registry.declareDecoration<int>();
DecorationContainer d(®istry);
ASSERT_EQ(0U,
reinterpret_cast<uintptr_t>(&d.getDecoration(firstChar)) %
std::alignment_of<char>::value);
ASSERT_EQ(0U,
reinterpret_cast<uintptr_t>(&d.getDecoration(secondChar)) %
std::alignment_of<char>::value);
ASSERT_EQ(0U,
reinterpret_cast<uintptr_t>(&d.getDecoration(firstInt)) %
std::alignment_of<int>::value);
ASSERT_EQ(0U,
reinterpret_cast<uintptr_t>(&d.getDecoration(secondInt)) %
std::alignment_of<int>::value);
}
} // namespace
} // namespace mongo
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