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/*
* Copyright (c) 2019 The Regents of The University of California
* All rights resvered.
*
* Copyright (c) 2010 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
* Bobby R. Bruce
*/
#include <gtest/gtest.h>
#include <list>
#include "base/refcnt.hh"
using namespace std;
namespace {
class TestRC;
typedef list<TestRC *> LiveList;
LiveList liveList;
int
liveListSize(){
return liveList.size();
}
class TestRC : public RefCounted
{
protected:
LiveList::iterator liveIt;
public:
TestRC()
{
liveList.push_front(this);
liveIt = liveList.begin();
}
~TestRC()
{
liveList.erase(liveIt);
}
int testVal;
};
typedef RefCountingPtr<TestRC> Ptr;
} // anonymous namespace
TEST(RefcntTest, NullPointerCheck)
{
// Create an empty Ptr and verify it's data pointer is NULL.
Ptr nullCheck;
EXPECT_EQ(NULL, nullCheck.get());
EXPECT_EQ(0, liveListSize());
}
TEST(RefcntTest, ConstructionFromPointer)
{
// Construct a Ptr from a TestRC pointer.
Ptr constFromPointer = new TestRC();
EXPECT_EQ(1, liveListSize());
}
TEST(RefcntTest, ConstructionFromExistingPointer)
{
// Construct a Ptr from an existing Ptr.
Ptr constFromPointer1 = new TestRC();
Ptr constFromPointer2 = constFromPointer1;
EXPECT_EQ(1, liveListSize());
}
TEST(RefcntTest, DestroyPointer)
{
// Test a Ptr being destroyed.
Ptr *ptrPtr = new Ptr(new TestRC());
EXPECT_EQ(1, liveListSize());
delete ptrPtr;
EXPECT_EQ(0, liveListSize());
}
TEST(RefcntTest, AssignmentFromAPointerFromAPointer)
{
// Test assignment from a pointer and from a Ptr.
Ptr assignmentTarget;
TestRC *assignmentSourcePointer = new TestRC();
EXPECT_EQ(liveListSize(), 1);
assignmentTarget = assignmentSourcePointer;
EXPECT_EQ(liveListSize(), 1);
assignmentTarget = NULL;
EXPECT_EQ(liveListSize(), 0);
Ptr assignmentSourcePtr(new TestRC());
EXPECT_EQ(liveListSize(), 1);
assignmentTarget = assignmentSourcePtr;
EXPECT_EQ(liveListSize(), 1);
assignmentSourcePtr = NULL;
EXPECT_EQ(liveListSize(), 1);
assignmentTarget = NULL;
EXPECT_EQ(liveListSize(), 0);
}
TEST(RefcntTest, AccessToClassPointers)
{
// Test access to members of the pointed to class and dereferencing.
TestRC *accessTest = new TestRC();
Ptr accessTestPtr = accessTest;
accessTest->testVal = 1;
EXPECT_EQ(1, accessTestPtr->testVal);
EXPECT_EQ(1, (*accessTestPtr).testVal);
accessTest->testVal = 2;
EXPECT_EQ(2, accessTestPtr->testVal);
EXPECT_EQ(2, (*accessTestPtr).testVal);
accessTestPtr->testVal = 3;
EXPECT_EQ(3, accessTest->testVal);
(*accessTestPtr).testVal = 4;
EXPECT_EQ(4, accessTest->testVal);
accessTestPtr = NULL;
accessTest = NULL;
EXPECT_EQ(0, liveListSize());
}
TEST(RefcntTest, BoolAndLogicalNotOperatorOverloads)
{
// Test bool and ! operator overloads.
Ptr boolTest = new TestRC();
EXPECT_EQ(boolTest, true);
EXPECT_EQ(!boolTest, false);
boolTest = NULL;
EXPECT_FALSE(boolTest);
EXPECT_TRUE(!boolTest);
EXPECT_EQ(0, liveListSize());
}
TEST(RefcntTest, EqualityOperators)
{
// Test the equality operators.
TestRC *equalTestA = new TestRC();
Ptr equalTestAPtr = equalTestA;
Ptr equalTestAPtr2 = equalTestA;
TestRC *equalTestB = new TestRC();
Ptr equalTestBPtr = equalTestB;
EXPECT_TRUE(equalTestA == equalTestAPtr);
EXPECT_TRUE(equalTestAPtr == equalTestA);
EXPECT_TRUE(equalTestAPtr == equalTestAPtr2);
EXPECT_TRUE(equalTestA != equalTestBPtr);
EXPECT_TRUE(equalTestAPtr != equalTestB);
EXPECT_TRUE(equalTestAPtr != equalTestBPtr);
}
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