140 lines
3.2 KiB
C++
140 lines
3.2 KiB
C++
// Copyright (C) 2014 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "emugl/common/smart_ptr.h"
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#include <gtest/gtest.h>
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namespace emugl {
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// This Test sub-class is used to track allocations and deallocations of
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// the MyTestClass instances that are created through newInstance().
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// See below for typical usage.
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class SmartPtrTest : public testing::Test {
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public:
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SmartPtrTest() : mNewCount(0), mDeleteCount(0), mDoCount(0) {}
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~SmartPtrTest() {
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mNewCount = 0;
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mDoCount = 0;
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mDeleteCount = 0;
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}
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class MyClass;
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MyClass* newInstance() {
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return new MyClass(this);
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}
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class MyClass {
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public:
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MyClass(SmartPtrTest* test) : mTest(test) {
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mTest->mNewCount++;
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}
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void doStuff() {
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mTest->mDoCount++;
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}
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~MyClass() {
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mTest->mDeleteCount++;
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}
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private:
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SmartPtrTest* mTest;
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};
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int mNewCount;
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int mDeleteCount;
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int mDoCount;
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};
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TEST_F(SmartPtrTest, Empty) {
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SmartPtr<MyClass> ptr;
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EXPECT_FALSE(ptr.Ptr());
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EXPECT_EQ(0, mNewCount);
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EXPECT_EQ(0, mDeleteCount);
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EXPECT_EQ(0, mDoCount);
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}
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TEST_F(SmartPtrTest, SingleRef) {
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MyClass* obj = newInstance();
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EXPECT_EQ(1, mNewCount);
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{
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SmartPtr<MyClass> ptr(obj);
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EXPECT_EQ(obj, ptr.Ptr());
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EXPECT_EQ(1, mNewCount);
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EXPECT_EQ(0, mDeleteCount);
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EXPECT_EQ(0, mDoCount);
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}
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// Check that the object was deleted.
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EXPECT_EQ(1, mDeleteCount);
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}
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TEST_F(SmartPtrTest, CopyConstructor) {
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MyClass* obj = newInstance();
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EXPECT_EQ(1, mNewCount);
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{
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SmartPtr<MyClass> ptr1(obj);
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{
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SmartPtr<MyClass> ptr2(ptr1);
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EXPECT_EQ(2, ptr1.getRefCount());
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EXPECT_EQ(2, ptr2.getRefCount());
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EXPECT_EQ(1, mNewCount);
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EXPECT_EQ(0, mDeleteCount);
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EXPECT_EQ(0, mDoCount);
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}
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EXPECT_EQ(1, mNewCount);
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EXPECT_EQ(0, mDeleteCount);
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EXPECT_EQ(0, mDoCount);
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}
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EXPECT_EQ(1, mNewCount);
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EXPECT_EQ(1, mDeleteCount);
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EXPECT_EQ(0, mDoCount);
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}
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TEST_F(SmartPtrTest, AssignmentOperator) {
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SmartPtr<MyClass> ptr1(newInstance());
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SmartPtr<MyClass> ptr2(newInstance());
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EXPECT_EQ(2, mNewCount);
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EXPECT_EQ(0, mDeleteCount);
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EXPECT_EQ(0, mDoCount);
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ptr2 = ptr1;
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EXPECT_EQ(2, mNewCount);
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EXPECT_EQ(1, mDeleteCount);
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EXPECT_EQ(ptr1.Ptr(), ptr2.Ptr());
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EXPECT_EQ(2, ptr1.getRefCount());
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EXPECT_EQ(2, ptr2.getRefCount());
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}
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TEST_F(SmartPtrTest, ArrowOperator) {
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SmartPtr<MyClass> ptr(newInstance());
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ptr->doStuff();
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EXPECT_EQ(1, mDoCount);
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(*ptr).doStuff();
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EXPECT_EQ(2, mDoCount);
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}
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} // namespace emugl
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