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- // Copyright 2013 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/ios/weak_nsobject.h"
- #include "base/bind.h"
- #include "base/mac/scoped_nsobject.h"
- #include "base/run_loop.h"
- #include "base/task/single_thread_task_runner.h"
- #include "base/test/task_environment.h"
- #include "base/threading/thread.h"
- #include "base/threading/thread_task_runner_handle.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace base {
- namespace {
- TEST(WeakNSObjectTest, WeakNSObject) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1(p1);
- EXPECT_TRUE(w1);
- p1.reset();
- EXPECT_FALSE(w1);
- }
- TEST(WeakNSObjectTest, MultipleWeakNSObject) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1(p1);
- WeakNSObject<NSObject> w2(w1);
- EXPECT_TRUE(w1);
- EXPECT_TRUE(w2);
- EXPECT_TRUE(w1.get() == w2.get());
- p1.reset();
- EXPECT_FALSE(w1);
- EXPECT_FALSE(w2);
- }
- TEST(WeakNSObjectTest, WeakNSObjectDies) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- {
- WeakNSObject<NSObject> w1(p1);
- EXPECT_TRUE(w1);
- }
- }
- TEST(WeakNSObjectTest, WeakNSObjectReset) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1(p1);
- EXPECT_TRUE(w1);
- w1.reset();
- EXPECT_FALSE(w1);
- EXPECT_TRUE(p1);
- EXPECT_TRUE([p1 description]);
- }
- TEST(WeakNSObjectTest, WeakNSObjectResetWithObject) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- scoped_nsobject<NSObject> p2([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1(p1);
- EXPECT_TRUE(w1);
- w1.reset(p2);
- EXPECT_TRUE(w1);
- EXPECT_TRUE([p1 description]);
- EXPECT_TRUE([p2 description]);
- }
- TEST(WeakNSObjectTest, WeakNSObjectEmpty) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1;
- EXPECT_FALSE(w1);
- w1.reset(p1);
- EXPECT_TRUE(w1);
- p1.reset();
- EXPECT_FALSE(w1);
- }
- TEST(WeakNSObjectTest, WeakNSObjectCopy) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1(p1);
- WeakNSObject<NSObject> w2(w1);
- EXPECT_TRUE(w1);
- EXPECT_TRUE(w2);
- p1.reset();
- EXPECT_FALSE(w1);
- EXPECT_FALSE(w2);
- }
- TEST(WeakNSObjectTest, WeakNSObjectAssignment) {
- scoped_nsobject<NSObject> p1([[NSObject alloc] init]);
- WeakNSObject<NSObject> w1(p1);
- WeakNSObject<NSObject> w2;
- EXPECT_FALSE(w2);
- w2 = w1;
- EXPECT_TRUE(w1);
- EXPECT_TRUE(w2);
- p1.reset();
- EXPECT_FALSE(w1);
- EXPECT_FALSE(w2);
- }
- // Touches |weak_data| by increasing its length by 1. Used to check that the
- // weak object can be dereferenced.
- void TouchWeakData(const WeakNSObject<NSMutableData>& weak_data) {
- if (!weak_data)
- return;
- [weak_data increaseLengthBy:1];
- }
- // Makes a copy of |weak_object| on the current thread and posts a task to touch
- // the weak object on its original thread.
- void CopyWeakNSObjectAndPost(const WeakNSObject<NSMutableData>& weak_object,
- scoped_refptr<SingleThreadTaskRunner> runner) {
- // Copy using constructor.
- WeakNSObject<NSMutableData> weak_copy1(weak_object);
- runner->PostTask(FROM_HERE, BindOnce(&TouchWeakData, weak_copy1));
- // Copy using assignment operator.
- WeakNSObject<NSMutableData> weak_copy2 = weak_object;
- runner->PostTask(FROM_HERE, BindOnce(&TouchWeakData, weak_copy2));
- }
- // Tests that the weak object can be copied on a different thread.
- TEST(WeakNSObjectTest, WeakNSObjectCopyOnOtherThread) {
- test::TaskEnvironment task_environment;
- Thread other_thread("WeakNSObjectCopyOnOtherThread");
- other_thread.Start();
- scoped_nsobject<NSMutableData> data([[NSMutableData alloc] init]);
- WeakNSObject<NSMutableData> weak(data);
- scoped_refptr<SingleThreadTaskRunner> runner = ThreadTaskRunnerHandle::Get();
- other_thread.task_runner()->PostTask(
- FROM_HERE, BindOnce(&CopyWeakNSObjectAndPost, weak, runner));
- other_thread.Stop();
- RunLoop().RunUntilIdle();
- // Check that TouchWeakData was called and the object touched twice.
- EXPECT_EQ(2u, [data length]);
- }
- } // namespace
- } // namespace base
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